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XC9502 Series
" 2ch DC/DC Controller (Step-up + Step-down) " Input Voltage Range 0.9V ~ 10.0V " Output Voltage Externally Set-Up " Switching Frequency 180kHz (15%)
Step-up 80% (Typ.) Step-down 100% " PWM, PWM/PFM Switching Control " High Efficiency Step-up 85% (Typ.) Step-down 92% (Typ.) " Small MSOP-10 package " Maximum Duty Cycle
2ch. Step-up / down DC/DC Controller ICs
Mar, 14 2003 Ver. 2
! Applications # PDAs # Palm Top Computers # Portable Audio Systems # Various Multi-Function Power Supplies ! Features
2ch DC/DC Controller Output 1 : Step-up DC/DC Controller Output 2 : Step-down DC/DC Controller Power Supply Voltage Range : 2.0V ~ 10V Output Voltage Range Output 1 (Step-up) : 1.5V ~ 30.0V Can be set freely with 0.9V (2.0%) of reference voltage supply and external components. Output 2 (Step-down) : 0.9V ~ 6.0V Can be set freely with 0.9V (2.0%) of reference voltage supply and external components. Oscillation Frequency Output Current Stand-By Function Package Soft-Start Time Output 1 Output 2 : 180kHz 15%
! General Description
The XC9502 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functional, 2 channel step-up and down DC/DC controller ICs. With 0.9V of standard voltage supply internal, and using externally connected components, the output 1 voltage (step-up DC/DC controller) can be set freely within a range of 1.5V to 30V. Since the output 2 (stepdown DC/DC controller) has a built-in 0.9V reference voltage (accuracy 2%), 0.9V to 6.0V can be set using external components. With a 180kHz frequency, the size of the external components can be reduced. Switching frequencies of 300kHz & 500kHz are also available as custom-designed products. The control of the XC9502 series can be switched between PWM control and PWM/PFM automatic switching control using external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents.
(300kHz, 500kHz custom)
: more than 300mA (VIN=1.8V, VOUT=3.3V)
: more than 1000mA (VIN=3.3V, VOUT=1.8V)
: 3.0A (MAX.) : MSOP-10 : 10 ms (internally set)
! Typical Performance Characteristics
XC9502B093A (300kHz,VOUT1:3.3V,VOUT2:1.8V)
L1=15H,L2=22H(CDRH5D28),CL1,CL2=92F(Tantalum) SD1,SD2:CMS02, Tr1:XP161A1355P,Tr2:XP162A12A6P
Efficiency 1,2 EFFI1,2 (%)
Noise is easily reduced with PWM control since the frequency is fixed. The series gives freedom of control selection so that control suited to the application can be selected. Soft-start time is internally set to 10msec (Output 1) and offers protection against in-rush currents when the power is switched. This also prevents voltage overshoot.
! Typical Application Circuit
XC9502B092A Input : 2 cell, VOUT1 : 3.3V, VOUT2 : 1.8V
VOUT1:3.3V SD1 :MA2Q737 L1:22H CDRH5D28 Tr2:Pch MOSFET XP162A12A6P
100 90 80 70 60 50 40 30 20 10 0
PWM/PFM Switching Control
VOUT1:3.3V VOUT2:1.8V
PWM Control VIN=2.7V
0.1
1
10
100
1000
Output Current 1,2 IOUT1,2 (mA)
L2:22H CDRH5D28 VOUT2:1.8V SD2 :MA2Q737
RFB11 :200k CL1 :47FX2
CFB1 :62pF
Tr2:Nch MOSFET :XP161A1355P
VIN =2.0V ~3.0V
CIN :47F
CFB2 :62pF
RFB21 :220k CL2 :47FX2
1 EXT1 EXT2/ 10 2 VDD 3 FB1 GND 9 FB2 8
VPWM1 RFB12 :75k VNE1
4 PW M1 PW M2 7 5 EN1 EN2 6
VPWM2 VNE2 RFB22 :220k
1
XC9502 Series
2ch. Step-up / down DC/DC Controller ICs
! Pin Configuration
1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1
EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6
MSOP-10 (TOP VIEW)
! Pin Assignment
PIN NUMBER 1 2 3 4 5 6 7 8 9 10 PIN NAME EXT 1 VDD FB1 PWM1 EN1 EN2 PWM2 FB2 GND EXT2/ FUNCTIONS Channel 1: External Transistor Drive Pin Supply Voltage Channel 1 : Output Voltage Monitor Feedback Pin Channel 1 : PWM/PFM Switching Pin Channel 1 : Enable Pin Channel 2 : Enable Pin Channel 2 : PWM/PFM Switching Pin Channel 2 : Output Voltage Monitor Feedback Pin Ground Channel 2 : External Transistor Drive Pin
! Ordering Information
XC9502123456
DESIGNATOR SYMBOL DESCRIPTION Standard (10 Pin) FB Voltage 0.9V Switching Frequency 180kHz 300kHz (custom) 500kHz (custom) Package Embossed Tape Embossed Tape MSOP-10 Standard Feed Reverse Feed
1 2 3 4 5 6
B 0 9 2 3 5 A R L
2
XC9502 Series
2ch. Step-up / down DC/DC Controller ICs
! Absolute Maximum Ratings
Ta=25OC PARAMETER VDD Pin Voltage FB1, 2 Pin Voltage EN1, 2 Pin Voltage PWM1,2 Pin Voltage EXT1, 2 Pin Voltage EXT1, 2 Pin Current Power Dissipation Operating Ambient Temperature Storage Temperature SYMBOL VDD VFB VEN VPWM VEXT IEXT Pd Topr Tstg RATINGS - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ 12 - 0.3 ~ VDD + 0.3 100 150 - 40 ~ + 85 - 55 ~ + 125 UNITS V V V V V mA mW
O O
C C
* Voltage goes to Ground.
! Block Diagram
EXT1
PWM/PFM Controller 1
PWM/PFM Controller 2
EXT2
VDD
PW Comparator1 M
PWM Comparator2
+
-
-
+
GND
FB1
+ Error Amp1 Ramp Wave Generator 1 Ramp Wave Generator 2
+ Error Amp2
FB2
PWM1
OSC Generator Vref1 = 0.9V with Soft Start1, EN1 EN1 to internal circuit Vref2 = 0.9V with Soft Start 1, EN2
PWM2
EN1
EN2
EN2 to internal circuit
3
XC9502 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Max. Input Voltage Output Voltage Range (note 3) SYMBOL VDD VIN
2ch. Step-up / down DC/DC Controller ICs
XC9502B092
(FOSC=180kHz) CONDITIONS MIN. 2.0 10.0 0.9 0.9 2.0 0.9 153 0.65 TYP. 70 60 50 70 60 60 1.0 180 MAX. 10.0 VIN 10.0 VIN 160 120 110 160 130 130 3.0 207 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 Ta=25OC UNITS V V V V V V A A A A A A A kHz V V A A A A A A
TEST CIRCUIT
1 1 1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
VDD 2.0V, IOUT1, 2=1mA VOUTSET VDDVOUT1 VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 FB1, 2=0V Supply Current 1 IDD1 Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V FB1=1.0V, FB2=0V IDD1-4 Supply Current 1-4 Supply Current 2 IDD2 FB1, 2=1.0V Stand-by Current ISTB Same as IDD1, EN1=EN2=0V Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V EN1,2 "High" Current IENH EN1,2=3.0V EN1,2 "Low" Current IENL EN1,2=0V, FB1,2=3.0V PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current FB1,2 "Low" Current FB1, 2=1.0V VFBL Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage SYMBOL VFB1 Step-up Controller CONDITIONS
VOUT1 VOUT2 VOUT1 VOUT2
Ta=25OC MIN. TYP. MAX. 0.918 0.9 2.0 0.8 85 0 38 20.0 47 30 0.20 UNITS V V V V % % % % mS V V
TEST CIRCUIT
0.882 0.900 VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, Operation Start-up Voltage1 VST1-1 IOUT1=1.0mA, RFB11=200k, RFB12=75k (note 2) VDD VOUT1: IOUT1=1mA Oscillation Start-up Voltage1 VST2-1 FB1=0V Maximum Duty Ratio1 MAXDTY1 Same as IDD1 75 80 Minimum Duty Ratio1 MINDTY1 Same as IDD2 PFM Duty Ratio1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA Efficiency1 (note 4) EFFI1 85 N-ch MOSFET:XP161A1355P VOUT1 x 0.95V, EN1=0V0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V 22 0.65 PWM1 "High" Voltage VPWMH1 No Load PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA MIN. 0.882 100 22 TYP. 0.900 30
4 2 1 3 3 3 5 5 5 6 6 5 5
Ta=25OC MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V
TEST CIRCUIT
Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency2 (note 4) EFFI2 92 P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V Soft-Start Time2 10.0 TSS2 5.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 22 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V 0.65 PWM2 "High" Voltage VPWMH2 No Load PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
7 1 3 3 8 8 8 6 6 8 8
Notes
1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
4
XC9502 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Max. Input Voltage Output Voltage Range (note 3) SYMBOL VDD VIN
2ch. Step-up / down DC/DC Controller ICs
XC9502B093
(FOSC=300kHz) CONDITIONS MIN. 2.0 10.0 0.9 0.9 2.0 0.9 255 0.65 TYP. 100 80 60 100 70 70 1.0 300 MAX. 10.0 VIN 10.0 VIN 190 150 120 190 150 150 3.0 345 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 Ta=25OC TEST UNITS CIRCUIT V 1 V 1 V 1 V V 2 V A 3 A 3 A 3 A 3 A 3 A 3 A 3 kHz 3 V 3 V 3 A 3 A 3 A 3 A 3 A 3 A 3 Ta=25OC TEST UNITS CIRCUIT V 4 V V V % % % % mS V V 2 1 3 3 3 5 5 5 6 6 5 5
VDD 2.0V, IOUT1, 2=1mA VOUTSET VDDVOUT1 VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 Supply Current 1 IDD1 FB1, 2=0V Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V Supply Current 1-4 IDD1-4 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V ISTB Same as IDD1, EN1=EN2=0V Stand-by Current Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V IENH FB1,2=3.0V EN1,2 "High" Current IENL EN1,2=0V, FB1,2=3.0V EN1,2 "Low" Current PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current VFBL FB1, 2=1.0V FB1,2 "Low" Current Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage SYMBOL VFB1 Step-up Controller CONDITIONS
VOUT1 VOUT2 VOUT1 VOUT2
MIN.
TYP.
MAX. 0.918 0.9 2.0 0.8 85 0 38 20.0 47 30 0.20
VDD=3.0V, VIN=1.5V, IOUT1=10mA 0.882 0.900 Using Tr: 2SD1628, Operation Start-up Voltage1 VST1-1 IOUT1=1.0mA, RFB11=200k, RFB12=75k (note 2) VDD VOUT1: IOUT1=1mA Oscillation Start-up Voltage1 VST2-1 FB1=0V Maximum Duty Ratio1 MAXDTY1 Same as IDD1 75 80 Minimum Duty Ratio1 MINDTY1 Same as IDD2 PFM Duty Ratio1 PFMDTY1 No Load, VPWM1=0V 22 30 IOUT=130mA 85 Efficiency1 (note 4) EFFI1 N-ch MOSFET:XP161A1355P VOUT1 x 0.95V, EN1=0V0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 22 EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA MIN. 0.900 100 22 TYP. 0.900 30
MAX. 0.900 2.0 0 38 20.0 47 30 0.20
Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA Efficiency2 EFFI2 92 P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V Soft-Start Time2 TSS2 5.0 10.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0V, EXT2=VDD-0.4V 22 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V PWM2 "High" Voltage VPWMH2 No Load 0.7 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
Ta=25OC TEST UNITS CIRCUIT V 7 V 1 % 3 % 3 % 8 % mS V V 8 8 6 6 8 8
Notes
1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
5
XC9502 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Max. Input Voltage Output Voltage Range (note 3) SYMBOL VDD VIN
2ch. Step-up / down DC/DC Controller ICs
XC9502B095
(FOSC=500kHz) CONDITIONS MIN. 2.0 10.0 0.9 0.9 2.0 0.9 425 0.65 TYP. 130 110 80 130 90 90 1.0 500 MAX. 10.0 VIN 10.0 VIN 250 220 150 240 190 190 3.0 575 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 Ta=25OC UNITS V V V V V V A A A A A A A kHz V V A A A A A A
TEST CIRCUIT
1 1 1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
VDD 2.0V, IOUT1, 2=1mA VOUTSET VDDVOUT1 VIN 0.9V, IOUT1, 2=1mA VDD=VOUT1 Supply Current 1 IDD1 FB1, 2=0V Supply Current 1-1 IDD1-1 EN1=3.0V, EN2=0V, FB1=0V Supply Current 1-2 IDD1-2 EN2=3.0V, EN1=0V, FB2=0V Supply Current 1-3 IDD1-3 FB1=0V, FB2=1.0V Supply Current 1-4 IDD1-4 FB1=1.0V, FB2=0V Supply Current 2 IDD2 FB1, 2=1.0V ISTB Same as IDD1, EN1=EN2=0V Stand-by Current Switching Frequency FOSC Same as IDD1 EN1,2 "High" Voltage VENH FB1,2=0V EN1,2 "Low" Voltage VENL FB1,2=0V IENH EN1,2=3.0V EN1,2 "High" Current IENL EN1,2=0V, FB1,2=3.0V EN1,2 "Low" Current PWM1,2 "High" Current IPWMH FB1, 2=3.0V, PWM=3.0V PWM1,2 "Low" Current IPWML FB1, 2=3.0V, PWM=0V IFBH FB1, 2=3.0V FB1,2 "High" Current VFBL FB1, 2=1.0V FB1,2 "Low" Current Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V Output 1 Characteristics PARAMETER FB1 Voltage Operation Start-up Voltage1 (note 2) Oscillation Start-up Voltage1 Maximum Duty Ratio1 Minimum Duty Ratio1 PFM Duty Ratio1 Efficiency1 (note 4) SYMBOL VFB1 Step-up Controller CONDITIONS
VOUT1 VOUT2 VOUT1 VOUT2
Ta=25OC MIN. 0.882 75 22 TYP. 0.900 80 30 MAX. 0.918 0.9 2.0 0.8 85 0 38 20.0 47 30 0.20 UNITS V V V V % % % % mS V V
TEST CIRCUIT
VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, VST1-1 IOUT1=1.0mA, RFB11=200k, RFB12=75k VDD VOUT1: IOUT1=1mA VST2-1 FB1=0V MAXDTY1 Same as IDD1 MINDTY1 Same as IDD2 PFMDTY1 No Load, VPWM1=0V EFFI1 IOUT=130mA
4 2 1 3 3 3 5 5 5 6 6 5 5
83 N-ch MOSFET:XP161A1355P VOUT1 x 0.95V, EN1=0V0.65V Soft-Start Time1 TSS1 5.0 10.0 28 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V 22 EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V PWM1 "High" Voltage VPWMH1 No Load 0.65 PWM1 "Low" Voltage VPWML1 No Load Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V Output 2 Characteristics PARAMETER FB2 Voltage Minimum Operation Voltage Maximum Duty Ratio2 Minimum Duty Ratio2 PFM Duty Ratio2 Efficiency2 SYMBOL VFB2 VINmin MAXDTY2 MINDTY2 PFMDTY2 EFFI2 Step-down Controller CONDITIONS VIN=3.0V, IOUT2=10mA Same as IDD1 Same as IDD2 No Load, VPWM2=0V IOUT2=250mA MIN. 0.882 100 22 TYP. 0.900 30
Ta=25OC MAX. 0.918 2.0 0 38 20.0 47 30 0.20 UNITS V V % % % % mS V V
TEST CIRCUIT
7 1 3 3 8 8 8 6 6 8 8
91 P-ch MOSFET : XP162A12A6P VOUT2 x 0.95V, EN2=0V0.65V Soft-Start Time2 TSS2 5.0 10.0 28 EXT2 "High" ON Resistance REXTBH2 EN2=0, EXT2=VDD-0.4V 22 EXT2 "Low" ON Resistance REXTBL2 FB2=0V, EXT2=0.4V PWM2 "High" Voltage VPWMH2 No Load 0.65 PWM2 "Low" Voltage VPWML2 No Load Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=5.0V
Notes
1) Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. 2) Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. 3) Please be careful not to exceed the breakdown voltage level of the peripheral parts. 4) EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
6
XC9502 Series
! Operational Description
2ch. Step-up / down DC/DC Controller ICs
The XC9502 series are multi-functional, 2 channel step-up and down DC/DC converter controller ICs with built-in high speed, low ON resistance drivers. The Error Amplifier is designed to monitor the output voltage and it compares the feedback voltage (FB) with the reference voltage. In response to feedback of a voltage lower than the reference voltage, the output voltage of the error amp. decreases. This circuit generates the Switching Frequency which in turn generates the reference clock. The Ramp Wave Generator generates a saw-tooth waveform based on outputs from the Phase Shift Generator. The PWM Comparator compares outputs from the Error Amp. and saw-tooth waveform. When the voltage from the Error Amp's output is low, the external switch will be set to ON. This circuit generates PFM pulses. Control can be switched between PWM control and PWM/PFM automatic switching control using external signals. The PWM/PFM automatic switching mode is selected when the voltage of the PWM1 (2) pin is less than 0.2V, and the control switches between PWM and PFM automatically depending on the load. As the PFM circuit generates pulses based on outputs from the PWM comparator, shifting between modes occurs smoothly. PWM control mode is selected when the voltage of the PWM1 (2) pin is more than 0.65V. Noise is easily reduced with PWM control since the switching frequency is fixed. Control suited to the application can easily be selected which is useful in audio applications, for example, where traditionally, efficiencies have been sacrificed during stand-by as a result of using PWM control (due to the noise problems associated with the PFM mode in stand-by).
The reference voltage, Vref (FB pin voltage)=0.9V, is adjusted and fixed by laser trimming (for output voltage settings, please refer to the notes on page 8). To protect against inrush current, when the power is switched on, and also to protect against voltage overshoot, soft-start time is set internally to 10ms. It should be noted, however, that this circuit does not protect the load capacitor (CL) from inrush current. With the Vref voltage limited and depending upon the input to the error amps, the operation maintains a balance between the two inputs of the error amps and controls the EXT pin's ON time so that it doesn't increase more than is necessary. This function controls the operation and shutdown of the IC. When the voltage of the EN1 or EN2 pins is 0.2V or less, the mode will be chip disable, the channel's operations will stop and the EXT1 pin will be kept at a low level (the external N-type MOSFET will be OFF) and the EXT2 pin will be kept at a high level (the external P-type MOSFET will be OFF). When both EN1 and EN2 are in a state of chip disable, current consumption will be no more than 3.0 A. When the EN1 or EN2 pin's voltage is 0.65V or more, the mode will be chip enable and operations will recommence. With softstart, 95% of the set output voltage will be reached within 10mS (TYP) from the moment of chip enable. Although IC starts oscillation from a VIN of 0.9V, the IC's power supply pin (VDD) and the output voltage monitor pin (FB1) should be connected to VOUT1. The start-up sequence for EN1 and EN2 is required when operations begin with a power supply voltage of VDD=0.9V, and channel two's (output 2) EN2 pin should be set to chip disable and turn it to enable when VOUT1 is more than 2.0V. For power supply voltages of VDD<2.0V, oscillation may occur irrespective of the FB pin voltage. Should this happen, you may find that output voltage will be higher than the set voltage. The FB pin voltage and the reference voltage Vref will be compared and output voltage will be controlled when the power supply voltage is V DD>2.0V or more. With power supply voltages of VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required.
7
XC9502 Series
2ch. Step-up / down DC/DC Controller ICs
Output voltage can be set by adding external split resistors. Output voltage is determined by the following equation, based on the values of RFB11(RFB21) and RFB12(RFB22). The sum of RFB11(RFB21) and RFB12(RFB22) should normally be 1 M or less. VOUT=0.9 x (RFB11+RFB12) /RFB12 The value of CFB1(CFB2), speed-up capacitor for phase compensation, should be fzfb= 1 / (2 x x CFB1 x RFB11) which is equal to 12kHz. Adjustments are required from 1kHz to 50kHz depending on the application, value of inductance (L), and value of load capacity (CL). [Example of Calculation] When RFB11=200k and RFB12=75k, VOUT1=0.9 x (200K+75k) / 75k=3.3V. [Typical Example]
VOUT RFB11 RFB12 CFB1 (V) (pF) (k) (k) VOUT RFB11 RFB12 CFB1 (V) (pF) (k) (k) VOUT RFB11 RFB12 CFB1 (V) (pF) (k) (k)
2.5 390 220 8.0 120 15 100 30 270 430 33 33 13 82 220 330 62 2.7 360 180 12.0 160 3.0 560 240 24 220 220 62 3.3 200 75 62 330 270 39 390 270 33 5.0 82 18 160 The same method can be adopted for channel two (output 2) also. [External Components] Output 1 (Step-up DC/DC controller) Output 2 (Step-down DC/DC controller) 1.0 1.5 1.8 2.0 2.2 Tr 1 :
(TOREX N-Channel Power MOSFET) Note : VGS Breakdown Voltage of this Tr. is 8V so please be careful with the power supply voltage. For 6V power supply voltage, XP161A1265PR which VGS breakdown voltage is 12V is recommended. VST1 of XP161A1355PR is 1.2V (max.) and that of XP161A1265PR is 1.5V (max.)
* MOSFET XP161A1355PR
Tr 2 :
* MOSFET XP162A12A6P (TOREX P-Channel Power MOSFET) Note : VGS Breakdown Voltage of this Tr. is 12V so please be careful with the power supply voltage.
SD 1 : MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky, TOSHIBA) L 1: 10H (SUMIDA, CDRH5D28, FOSC = 500kHz) 15H (SUMIDA, CDRH5D28, FOSC = 300kHz) 22H (SUMIDA, CDRH5D28, FOSC = 180kHz) CL1 : 16V, 47F (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high.
C=(CL standard value)x(IOUT1(mA)/300mAxVOUT1/VIN
SD 2 : MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky, TOSHIBA) L 2: 10H (SUMIDA, CDRH5D28, FOSC = 500kHz) 22H (SUMIDA, CDRH5D28, FOSC = 300kHz) 47H (SUMIDA, CDRH5D28, FOSC = 180kHz) CL2 : 16V, 47F (Tantalum) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high.
C=(CL standard value)x(IOUT2 (mA)/500mAxVOUT2/VIN
* NPN MOSFET 2SD1628 (SANYO) RB 1 : 500 ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below. RB1 (VIN-0.7) x hFE / IC-REXTBH CB1 : 2200pF (Ceramic) Set according to the equation below. CB1 (2 x RB2 x FOSC x 0.7)
Tr :
* PNP MOSFET 2SA1213 (SANYO) RB 2 : 500 ( Adjust in accordance with load & Tr.'s HFE.) Set according to the equation below. RB2 (VIN-0.7) x hFE / IC-REXTBH CB1 : 2200pF (Ceramic) Set according to the equation below. CB2 (2 x RB2 x FOSC x 0.7)
Tr :
8
XC9502 Series
! Test Circuits
2ch. Step-up / down DC/DC Controller ICs
Circuit 1
SBD1 VOUT1 VIN 510 NPN Tr1 CFB1 CL1 2200pF 1F 3 FB1 4 PWM1 RFB12 5 EN1 EN2 6 FB2 8 PWM2 7 RFB22 CL2 RL2 1 EXT1 2 VDD EXT2 10 GND 9 SBD2 RFB21 CFB2 CIN 2200pF 510 L1 PNP Tr2 L2 VOUT2
Circuit 5
SBD1 VOUT1 A Nch MOSFET1 A 200k 62pF V CL1 RL 4 PWM1 75k OSC VPWM1 VEN1 5 EN1 EN2 6 PWM2 7 2 VDD 3 FB1 GND 9 FB2 8 1 EXT1 EXT2 10 VIN CIN L1
RFB11
Circuit 2
SBD1 VOUT1 VIN 510 NPN Tr1 CFB1 CL1 1 EXT1 2200pF 2 VDD 3 FB1 4 PWM1 RFB12 5 EN1 EN2 6 EXT2 10 GND 9 FB2 8 PWM2 7 RFB22 SBD2 RFB21 CFB2 CIN 2200pF 510 L1 PNP Tr2 L2 VOUT2
Circuit 6
1 EXT1 2 VDD 3 FB1 4 PWM1 OSC 1F VDD VPWM1 5 EN1
EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VPWM2 VEXT2 VFB2 A
RFB11
Rp CL2 RL2
VEXT1
VFB1
VEN1
VEN2
Circuit 3
Circuit 7
Pch MOSFET2 L2 VOUT2
1 EXT1 2 VDD 3 FB1 A OSC A 1F VDD VFB1 VPWM1 VEN1 A A 5 EN1 4 PWM1
EXT2 10 GND 9 CIN FB2 8 PWM2 7 EN2 6 A A A OSC
A A VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 VEN2 VPWM2 VFB2 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 V CL2 RL SBD2
Circuit 4
L1 VOUT1 Nch MOSFET1
Circuit 8
Pch MOSFET2 L2 VOUT2
A A SBD1 CL1 V RL CIN 1 EXT1 2 VDD 3 FB1 4 PWM1 VDD 1F 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VIN CIN VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 75k EN2 6 SBD2 200k 62pF V CL2 RL
9
XC9502 Series
2ch. Step-up / down DC/DC Controller ICs
! Peripheral Components Used for Test Circuits
Circuits 1, 2 L1, L2 : 22H (SUMIDA CDRH5D28) : XC9502B092A 15H (SUMIDA CDRH5D28) : XC9502B093A 10H (SUMIDA CDRH5D28) : XC9502B095A CRS02 (Schottky diode, TOSHIBA) EC10QS06 (Schottky diode, NIHON INTER) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 35MCE335MB2 x 3 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 2SD1628 (SANYO) 2SA1213 (TOSHIBA) Please use by the conditions as below. RFB11 + RFB12 1M RFB21 + RFB22 1M RFB11 / RFB12 = (Setting Output Voltage / 0.9) -1 VOUT2=(0.9-VOUT1) X (RFB21/RFB22) + 0.9V Please adjust as below: fzfb=1/(2 x x CFB1 x RFB11) = 1kHz ~50kHz ( 12kHz usual) fzfb=1/(2 x x CFB2 x RFB21) = 1kHz ~50kHz ( 12kHz usual) 22H (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX)
SD1, SD2 : CL1, CL2 : CIN : NPN Tr1 : PNP Tr1 : RFB :
CFB :
Circuits 4 L1 : SD1 : CL1 : CIN : N-ch MOSFET1 : Circuits 5 L1 : 22H (SUMIDA CDRH5D28) : XC9502B092A 15H (SUMIDA CDRH5D28) : XC9502B093A 10H (SUMIDA CDRH5D28) : XC9502B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX)
SD1 : CL1 : CIN : N-ch MOSFET1 : Circuit 7 L1 : SD1 : CL1 : CIN : P-ch MOSFET1 : Circuit 8 L2 :
22H (SUMIDA CDRH5D28) MA2Q737 (Schottky diode, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP162A12A6P (TOREX)
SD2 : CL2 : CIN : P-ch MOSFET1 :
22H (SUMIDA CDRH5D28) : XC9502B092A 15H (SUMIDA CDRH5D28) : XC9502B093A 10H (SUMIDA CDRH5D28) : XC9502B095A MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A12A6P (TOREX)
10
XC9502 Series
! NoteS on Use
2ch. Step-up / down DC/DC Controller ICs
1. Checking for Intermittent Oscillation The XC9502 series is subject to intermittent oscillation in the proximity of the maximum duty if the step-down ratio is low (e.g., from 4.2 V to 3.3 V) or a heavy load is applied where the duty ratio becomes high. Check waveforms at EXT under your operating conditions. A remedy for this problem is to raise the inductance of coil L or increase the load capacitance CL.
2. PWM/PFM Automatic Switching If PWM/PFM automatic switching control is selected and the step-up ration is low (e.g., from 4.5V to 5.0V) or the step-down ratio is high (e.g., from 10.0V to 1.0 V), the control mode remains in PFM setting in the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9502 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9502 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM1 and PWM2 to High to set the control mode to PWM setting. For use under the above-mentioned condition, measured data of PWM/PFM automatic switching control shown on the data sheets are available up to IOUT = 100 mA. 3. Ratings Use the XC9502 series and peripheral components within the limits of their ratings.
11
XC9502 Series
! Typical Performance Characteristics < 1ch Step-up DC/DC Controller >
(1) Output Voltage vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT1= 1.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT1= 2.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
1.7 Output Voltage1 VOUT1 (V)
2.7 Output Voltage1 VOUT1 (V)
1.6
2.6
1.5V
1.5 VIN=0.9V 1.4 1.2V
2.5 VIN=0.9V 2.4 1.2V
1.3
2.3
1.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 3.3V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT1= 5.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
3.5 Output Voltage1 VOUT1 (V)
5.2 Output Voltage1 VOUT1 (V)
4.2V
3.4
2.7V
5.1
3.3 VIN=0.9V 1.2V,1.5V
5.0 VIN=1.5V 2.7V 4.8 3.3V
3.2
4.9
3.1
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
4.7 0.1 1 10 100 Output Current 1 IOUT1 (mA) 1000
FOSC=180kHz, VOUT1= 8.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1265P
PWM/PFM Switching Control PWM Control
8.2 Output Voltage1 VOUT1 (V)
5.0V
8.1
8.0 VIN=3.3V 7.9 4.2V
7.8
7.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
12
XC9502 Series
< 1ch Step-up DC/DC Controller >
(1) Output Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT1= 2.5V
2.7 Output Voltage1 VOUT1 (V)
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT1= 3.3V
3.5 Output Voltage1 VOUT1 (V)
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
1.5V
2.6
3.4
2.7V
2.5
3.3 VIN=0.9V 3.2 1.2V 3.1 1.5V
2.4
VIN=0.9V 1.2V
2.3
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 2.5V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
5.2 Output Voltage1 VOUT1 (V)
2.7 Output Voltage1 VOUT1 (V)
5.1
3.3V
4.2V
2.6
1.5V
5.0
2.5
4.9
VIN=1.2V 1.5V
2.4
VIN=0.9V 1.2V
2.7V
4.8
2.3
4.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
2.2 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 5.0V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
3.5 Output Voltage1 VOUT1 (V)
5.2 Output Voltage1 VOUT1 (V)
4.2V
3.4 1.5V 3.3
2.7V
5.1 3.3V 5.0
3.2
VIN=0.9V 1.2V
4.9 VIN=0.9V 4.8 1.2V 2.7V 1.5V
3.1
3.0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
4.7 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
13
XC9502 Series
< 1ch Step-up DC/DC Controller >
(2) Efficiency vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT1= 1.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=180kHz, VOUT1= 2.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
100
80 Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%)
80
60 VIN=0.9V 40 1.2V
60
VIN=0.9V 1.2V
1.5V
40
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 3.3V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=180kHz, VOUT1= 5.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
100
Efficiency1 EFFI 1 (%)
Efficiency1 EFFI 1 (%)
80
2.7V 1.2V 1.5V VIN=0.9V
80 4.2V 60 VIN=1.5V 3.3V 2.7V 40
60
40
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 8.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1265P
100
Efficiency1 EFFI 1 (%)
80 VIN=3.3V 4.2V 5.0V
60
40
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
14
XC9502 Series
< 1ch Step-up DC/DC Controller >
(2) Efficiency vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT1= 2.5V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=300kHz, VOUT1= 3.3V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
100
100
2.7V Efficiency1 EFFI 1 (%) Efficiency1 EFFI 1 (%) 80 1.5V 60 VIN=0.9V 1.2V 80
60
1.2V VIN=0.9V 1.5V
40
40
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
100
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
FOSC=500kHz, VOUT1= 2.5V
100
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
Efficiency1 EFFI 1 (%)
Efficiency1 EFFI 1 (%)
80 4.2V 3.3V VIN=1.2V 2.7V 1.5V
PWM/PFM Switching Control PWM Control
80 1.5V 60 VIN=0.9V 40 1.2V
60
40
20
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
100
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 5.0V
100
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
4.2V 80 2.7V Efficiency1 EFFI 1 (%) 3.3V 1.2V 40 VIN=0.9V 1.5V 2.7V
80 Efficiency1 EFFI 1 (%)
60 VIN=0.9 40 1.2V
60
1.5V
20
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
15
XC9502 Series
< 1ch Step-up DC/DC Controller >
(3) Ripple Voltage vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT1= 1.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT1= 2.5V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
80
80
60 1.2V 40 VIN=0.9V
60
VIN=0.9V 1.2V 1.5V
40
20
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 3.3V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT1= 5.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
4.2V
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
80
80 2.7V VIN=1.5V 40
60 VIN=0.9V 40 2.7V 20
1.5V
60
20 1.2V
3.3V
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=180kHz, VOUT1= 8.0V
L1=22H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1265P
PWM/PFM Switching Control PWM Control
100
80 Ripple Voltage1 (mV) 4.2V 60 VIN=3.3 V 5.0V
40
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
16
XC9502 Series
< 1ch Step-up DC/DC Controller >
(3) Ripple Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT1= 2.5V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT1= 3.3V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
80 Ripple Voltage1 (mV) 1.2V 60 VIN=0.9V
1.5V Ripple Voltage1 (mV)
80
1.5V 1.2V
60 VIN=0.9V 40 2.7V 20
40
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=300kHz, VOUT1= 5.0V
L1=15H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 2.5V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
100
3.3V 2.7V 1.5V
4.2V
100
Ripple Voltage1 (mV)
80
Ripple Voltage1 (mV)
80 1.2V 60 VIN=0.9V 1.5V
60
VIN=1.2V
40
40
20
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
FOSC=500kHz, VOUT1= 3.3V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1= 5.0V
L1=10H(CDRH5D28), CL1=94F(Tantalum) SD1:CMS02, Tr1:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
Ripple Voltage1 (mV)
Ripple Voltage1 (mV)
80
1.2
2.7V
2.7V 1.5V
80 1.2V VIN=0.9V 40 4.2V 3.3V
60 VIN=0.9V 40
60
20
1.5V
20
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
0 0.1 1 10 100 1000 Output Current 1 IOUT1 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
17
XC9502 Series
< 2ch Step-down DC/DC Controller >
(4) Output Voltage vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT2=1.0V
L2=47H(CDRH6D38), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=180kHz, VOUT2=1.0V
1.2
L2=47H(CDRH6D38), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
1.2
Output Voltage2 VOUT2 (V)
Output Voltage2 VOUT2 (V)
1.1
10V
1.1
10V
1.0
1.0
0.9 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V
0.9
4.2V 5.0V 6.0V 8.0V VIN=2.7V 3.3V
0.8
0.8
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V
3.5 Output Voltage2 VOUT2 (V)
L2=47H(CDRH6D38), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT2=5.0V
L2=47H(CDRH6D38), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
5.2 Output Voltage2 VOUT2 (V)
3.4
5.1
3.3
5.0
3.2 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.1
4.9 VIN= 6.0V 8.0V 10V 4.8
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOCS=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
1.2 Output Voltage2 VOUT2 (V)
1.2
PWM/PFM Switching Control
Output Voltage2 VOUT2 (V)
VIN=2.7V 3.3V 1.1 5.0V
1.1
1.0
1.0
0.9
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
0.9
4.2V 6.0V 8.0V 10V
0.8
0.8
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 18
XC9502 Series
< 2ch Step-down DC/DC Controller >
(4) Output Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=1.8V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=1.8V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
2.0 Output Voltage2 VOUT2 (V)
2.0 Output Voltage2 VOUT2 (V)
1.9
1.9
6.0V 8.0V 10V
1.8
1.8
1.7 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
1.7 VIN= 2.7V 3.3V 4.2V 5.0V 1.6
1.6
1.5 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
1.5 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
2.7 Output Voltage2 VOUT2 (V)
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=2.5V
2.7 Output Voltage2 VOUT2 (V)
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
10V 2.6 8.0V
2.6
10.0V
2.5
2.5
2.4 VIN= 2.7V 3.3V 4.2V 5.0V 6.0V 8.0V
2.4 3.3V 4.2V 5.0V 6.0V 2.3 VIN=2.7V
2.3
2.2 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
2.2 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=3.3V
3.5 Output Voltage2 VOUT2 (V) 3.4 3.3 3.2 3.1 3.0 0.1 1 10 100 1000 3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA) 10.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=3.3V
3.5 Output Voltage2 VOUT2 (V)
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
VIN=4.2V 5.0V 6.0V 8.0V
3.4
VIN=4.2V 5.0V 6.0V 8.0V
3.3
3.2
10.0V
3.1
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 19
XC9502 Series
< 2ch Step-down DC/DC Controller >
(4) Output Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=5.0V
5.2 Output Voltage2 VOUT2 (V)
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=5.0V
5.2 Output Voltage2 VOUT2 (V)
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
5.1
10.0V
5.1
10.0V
5.0 VIN= 6.0V 8.0V
5.0 VIN= 6.0V 8.0V 4.9
4.9
4.8
4.8
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=1.0V
1.2 Output Voltage2 VOUT2 (V)
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=500kHz, VOUT2=1.0V
1.2 Output Voltage2 VOUT2 (V)
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
1.1
1.1
VIN=2.7V 3.3V 4.2V 5.0V
1.0
1.0
0.9
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
0.9
6.0V 8.0V 10V
0.8
0.8
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=3.3V
3.5 Output Voltage2 VOUT2 (V)
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=500kHz, VOUT2=3.3V
3.5 Output Voltage2 VOUT2 (V)
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
10V 3.4 3.4
3.3 VIN=4.2V 5.0V 6.0V 8.0V 10V 3.2
3.3 VIN=4.2V 5.0V 6.0V 8.0V 3.2
3.1
3.1
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
3.0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 20
XC9502 Series
< 2ch Step-down DC/DC Controller >
(4) Output Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=5.0V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
5.2 Output Voltage2 VOUT2 (V)
5.1
5.0 VIN= 6.0V 8.0V 10V 4.9
4.8
4.7 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor)
21
XC9502 Series
< 2ch Step-down DC/DC Controller >
(5) Efficiency vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT2=1.0V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT2=1.0V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
VIN=5.0V Efficiency2 EFFI12 (%) 80 8.0V
Efficiency2 EFFI12 (%)
80
60 4.2V 40 3.3V 20 VIN=2.7V
60 6.0V 40 10V 20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=180kHz, VOUT2=5.0V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
5.0V Efficiency2 EFFI12 (%) Efficiency2 EFFI12 (%) 80 VIN=4.2V 10V 8.0V 40 6.0V 80 10V 8.0V 40 VIN=6.0V
60
60
20
PWM/PFM Switching Control PWM Control
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
100
100
Efficiency2 EFFI12 (%)
Efficiency2 EFFI12 (%)
80
80 6.0V 60 8.0V
10V
60 4.2 40 3.3V VIN=2.7V
40
20
20 VIN=5.0V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor)
22
XC9502 Series
< 2ch Step-down DC/DC Controller >
(5) Efficiency vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=1.8V
100
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT2=1.8V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
100
Efficiency2 EFFI12 (%)
Efficiency2 EFFI12 (%)
80 VIN= 2.7V 60 3.3V 40 4.2V
80 10V 60 VIN=5.0V 8.0V 6.0V 20
40
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr:2XP162A12A6P
FOSC=300kHz, VOUT2=2.5V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
100
100
Efficiency2 EFFI12 (%)
VIN=2.7V 60 3.3V 4.2V
Efficiency2 EFFI12 (%)
80
80 10V 60 VIN=5.0V 40 6.0V 8.0V
40
20
PWM/PFM Switching Control PWM Control
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=3.3V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT2=5.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
100
100
Efficiency2 EFFI12 (%)
Efficiency2 EFFI12 (%)
80
10V
80
60 8.0V 40 6.0V 20 VIN=4.2V 5.0V
60 10V 40 8.0V VIN=6.0V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 23
XC9502 Series
< 2ch Step-down DC/DC Controller >
(5) Efficiency vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=500kHz, VOUT2=1.0V
100 80 60 40 20 0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) 4.2V 3.3V VIN=2.7V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT2=1.0V
100 80 VIN=5.0V 60 40 6.0V 20 0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) 10V 8.0V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control PWM Control
Efficiency2 EFFI12 (%)
FOSC=500kHz, VOUT2=3.3V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
Efficiency2 EFFI12 (%)
FOSC=500kHz, VOUT2=3.3V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
100
100
Efficiency2 EFFI12 (%)
8.0V 60 6.0V 40 5.0V VIN=4.2V
PWM/PFM Switching Control PWM Control
Efficiency2 EFFI12 (%)
80
10V
80
60
10V 8.0V VIN=6.0V
PWM/PFM Switching Control PWM Control
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1
10
100
1000
Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor)
24
XC9502 Series
< 2ch Step-down DC/DC Controller >
(6) Ripple Voltage vs. Output Current
2ch. Step-up / down DC/DC Controller ICs
FOSC=180kHz, VOUT2=1.0V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=180kHz, VOUT2=1.0V
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
80 Ripple Voltage2 (mV) VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV)
80
60
60 VIN=2.7V
40
40
4.2V 10V 5.0V 6.0V
8.0V 3.3V
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=3.3V FOSC=180kHz, VOUT2=3.3V
100
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
100
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV) 80
60 10V 40 8.0V 20 VIN=4.2V 6.0V 5.0V
60 VIN=4.2V 5.0V 20 6.0V 8.0V
40
10V
0 0.1 1 10 100 1000 0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA) Output Current2 IOUT2 (mA)
FOSC=180kHz, VOUT2=5.0V
100
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=180kHz, VOUT2=5.0V
100
L2=47H(CDRH6D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
PWM Control
Ripple Voltage2 (mV)
80 Ripple Voltage2 (mV)
80
60
60
40 8.0V 20 VIN=6.0V
10V
40 VIN=6.0V 20
8.0V
10V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 25
XC9502 Series
< 2ch Step-down DC/DC Controller >
(6) Ripple Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=1.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
80 Ripple Voltage2 (mV) Ripple Voltage2 (mV)
80 VIN=2.7V 8.0V 3.3V
60
VIN=2.7V 3.3V 5.0V 6.0V
60
40 8.0V 10V 20 4.2V
40
6.0V 5.0V 10V 4.2V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=1.8V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=300kHz, VOUT2=1.8V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
PWM Control
Ripple Voltage2 (mV)
80 VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV)
80
60
60 5.0V 4.2V 10V 8.0V 6.0V 3.3V VIN=2.7V
40
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=2.5V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=2.5V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
Ripple Voltage2 (mV)
60
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
Ripple Voltage2 (mV)
80
80
60 10V 8.0V 6.0V 5.0V 4.2V
VIN=2.7V 3.3V
40
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor)
26
XC9502 Series
< 2ch Step-down DC/DC Controller >
(6) Ripple Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=300kHz, VOUT2=3.3V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=3.3V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
80 Ripple Voltage2 (mV) VIN=4.2V 5.0V 6.0V 8.0V 10V Ripple Voltage2 (mV)
80
60
60
VIN=4.2V 5.0V
6.0V 8.0V 10.0V
40
40
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=300kHz, VOUT2=5.0V
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=300kHz, VOUT2=5.0V
100
L2=22H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
80
80
60 VIN=6.0V 40 10V 20 8.0V
60
40 VIN=6.0V 20 8.0V 10.0V
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=1.0V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=500kHz, VOUT2=1.0V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
Ripple Voltage2 (mV)
60
VIN=2.7V 3.3V 4.2V 5.0V 6.0V 8.0V 10V
Ripple Voltage2 (mV)
80
80
60 VIN=2.7V 40 8.0V 10V 5.0V 6.0V 20 4.2V 3.3V
40
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor) 27
XC9502 Series
< 2ch Step-down DC/DC Controller >
(6) Ripple Voltage vs. Output Current (Continued)
2ch. Step-up / down DC/DC Controller ICs
FOSC=500kHz, VOUT2=3.3V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM Control
FOSC=500kHz, VOUT2=3.3V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
100
Ripple Voltage2 (mV)
Ripple Voltage2 (mV)
80
80
60 8.0V 10V 40 5.0V VIN=4.2V 6.0V
60 VIN=4.2V 40 5.0V 6.0V 8.0V 10V
20
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
FOSC=500kHz, VOUT2=5.0V
100
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
FOSC=500kHz, VOUT2=5.0V
L2=10H(CDRH5D28), CL2=94F(Tantalum) SD2:CMS02, Tr2:XP162A12A6P
PWM/PFM Switching Control
100
PWM Control
Ripple Voltage2 (mV)
80 Ripple Voltage2 (mV)
80
60
60
40 8.0V VIN=6.0V
10V
40 VIN=6.0V 20 8.0V
10V
20
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
0 0.1 1 10 100 1000 Output Current2 IOUT2 (mA)
* When setting VOUT = 1.0V, VIN = 8.0V, 10.0V CL should be 94F (Tantalum) + 100F (OS capacitor)
28
XC9502 Series
Typical Performance Characteristics
2ch. Step-up / down DC/DC Controllers
(7) Supply Current vs. Supply Voltage
(8) Supply Current 1-1 vs. Supply Voltage
XC9502B092 (180kHz)
Supply Current 1-1 IDD1-1 (A) 350 Supply Current 1 IDD1 (A) 300 250 200 150 100 50 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C -40o C 250 200 150 100 50 0
XC9502B092 (180kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
(9) Supply Current 1-2 vs. Supply Voltage
(10) Supply Current 1-3 vs. Supply Voltage
XC9502B092 (180kHz)
Topr=85o C 25o C -40o C Supply Current 1-3 IDD1-3 (A) Power Supply 1-2 IDD1-2 (A) 250 200 150 100 50 0 0 2 4 6 8 10 Supply Voltage VDD (V) 350 300 250 200 150 100 50 0
XC9502B092 (180kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
(11) Supply Current 1-4 vs. Supply Voltage
(12) Supply Current 2 vs. Supply Voltage
XC9502B092 (180kHz)
Supply Current 1-4 IDD1-4 (A) 250 200 150 100 50 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C -40o C 250 Supply Current 2 IDD2 (A) 200 150 100 50 0
XC9502B092 (180kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
29
XC9502 Series
(13) Oscillation Frequency vs. Supply Voltage
2ch. Step-up / down DC/DC Controllers
(14) Standby Current vs. Supply Voltage
XC9502B092 (180kHz)
210 200 190 180 170 160 150 0 2 4 6 8 10 Supply Voltage VDD (V) 85OC - 40OC Topr=25OC 10 8 6 4 2 0
XC9502B092 (180kHz)
Standby Current ISTB (A)
Oscillation Frequency Fosc (kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
(15) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage
(16) EN1, 2 'H' 'L' Voltage vs. Supply Voltage
XC9502B092 (180kHz)
PWM1, 2 H' L' Voltage Vpwm1, 2 (V)
XC9502B092 (180kHz)
EN1, 2 'H' 'L' Voltage VEN1, 2 (V) 0.8 0.6 0.4 85o C 0.2 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=25 C
o
0.8 0.6 0.4 85OC 0.2 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=25OC
-40OC
-40OC
(17) Maximum Duty Ratio 1 vs. Supply Voltage
(18) PFM Duty Ratio 1, 2 vs. Supply Voltage
XC9502B092 (180kHz)
Max. Duty Ratio 1 Maxdty 1 (%) 85 80 75 70 65 60 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C -40o C PFM Duty Ratio 1, 2(%) 40 35 30 25 20
XC9502B092(180kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
30
XC9502 Series
2ch. Step-up / down DC/DC Controllers
(19) EXT 1, 2 High ON Resistance vs. Supply Voltage
(20) EXT 1, 2 Low ON Resistance vs. Supply Voltage
XC9502B092 (180kHz)
EXT1, 2 H ON Resistance () EXT1, 2 L ON Resistance () 50 40 30 20 10 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C -40o C 50 40 30 20 10 0
XC9502B092 (180kHz)
Topr=85o C 25o C -40o C
0
2
4
6
8
10
Supply Voltage VDD (V)
(21) Output Voltage vs. Ambient Temperature
(22) Oscillation Start-up Voltage vs. Ambient Temperature XC9502B092 (180kHz,VOUT1=2.0V)
1 Oscillation Starting Voltage VST2(V) 0.8 0.6 0.4 0.2 0
XC9502B093(300kHz)
3.5 Output Voltage VOUT(V) 3.4 3.3 3.2 3.1 3.0 -50 -20 10 40 70 100 Ambient Temperature Ta(0 C) VIN=1.8V IOUT=200mA
L=22H(CDRH5D28), CL=94F(Tantalum) Tr:XP161A1265P, SD:CMS02
-40 -20
0
20
40
60
80 100
Ambient Temperature Ta(o C)
(23) Operation Retention Voltage vs. Ambient Temperature XC9502B092(180kHz,VOUT1=3.3V)
0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta (o C)
L=22H(CDRH5D28), CL=47F(Tantalum) SD:MA2Q737, Tr:2SD1628G
(24) Operation Start-up Voltage vs. Ambient Temperature XC9502B092(180kHz,VOUT1=3.3V)
1.2 Operation Start-up Voltage VST1(V) 1 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta(o C) IOUT=1mA
L=22H(CDRH5D28), CL=47F(Tantalum) SD:MA2Q737, Tr:2SD1628G
Operation Retention Voltage VHLD (V)
IOUT=1mA
31
XC9502 Series
(25) Soft-Start Time 1, 2 vs. Supply Voltage
2ch. Step-up / down DC/DC Controllers
XC9502B092 (180kHz)
Soft-Start Time 1, 2 TSS1, 2(msec)
25 20 15 10 5 0 0 2 4 6 8 10 Supply Voltage VDD (V)
32
XC9502 Series
Load Transient Response [1 channel : Step-up DC/DC Controller]
< VOUT1 = 3.3V, VIN = 2.0V IOUT1, 2 =100A
2ch. Step-up / down DC/DC Controllers
100mA >
PWM Control FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100A 100mA
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100mA 100A
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2
100A 200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div
CH2 10msec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div
100A
PWM/PFM Switching Control FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100A 100mA
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100mA 100A
CH1
3.3V CH1
3.3V
100mA
100mA
CH2
100A 200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div
CH2 10msec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1 , 50mA/div
100A
33
XC9502 Series
Load Transient Response [1 channel : Step-up DC/DC Controller]
< VOUT1 = 3.3V, VIN = 2.0V PWM Control IOUT1, 2 =10mA
2ch. Step-up / down DC/DC Controllers ICs
100mA >
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=10mA 100mA
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2
10mA
CH2
10mA
200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div
200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div
PWM/PFM Switching Control FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=10mA 100mA
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA CH2
100mA
CH2
10mA
10mA
200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div
200sec/div CH1:VOUT1 , AC-COUPLED, 50mV/div CH2:IOUT1, 50mA/div
34
XC9502 Series
Load Transient Response [1 channel : Step-up DC/DC Controller]
2ch. Step-up / down DC/DC Controllers ICs
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=1mA PWM1 'L' 'H'
FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=1mA PWM1 'H' 'L'
CH1
3.3V CH1 3.3V
0.65V CH2 1msec/div CH1:VOUT1 , AC-COUPLED ,10mV/div CH2:PWM1 , 0.5V/div 0V CH2
0.65V 0V 1msec/div CH1:VOUT1, AC-COUPLED ,10mV/div CH2:PWM1, 0.5V/div

FOSC=180kHz, VOUT1=3.3V
VIN=2.0V, IOUT1=100mA EN1 'L' 'H' CIN=47F
3.3V
CH1
300mA
CH2 0.65V CH3 4ms/div CH1:VOUT1, 1.0V/div CH2:IIN1, 100mA/div CH3:EN1 , 0.5V/div
* EN2=GND
35
XC9502 Series
Load Transient Response [2 channel : Step-down DC/DC Controller]
2ch. Step-up / down DC/DC Controllers ICs
< VOUT2=3.3V, VIN=5.0V PWM Control
IOUT2=100A
300mA>
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=100A 300mA
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=300mA100A
CH1
3.3V CH1 3.3V
300mA
300mA
CH2 200sec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div
100A
CH2 10msec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div
100A
PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=100A 300mA
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=300mA100A
CH1
3.3V CH1 3.3V
300mA
300mA
CH2 200sec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div
100A CH2 10msec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div
100A
36
XC9502 Series
Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=3.3V, VIN=5.0V PWM Control FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=10mA 300mA
2ch. Step-up / down DC/DC Controllers ICs
IOUT2=10mA
300mA>
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=300mA10mA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2 200sec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div
10mA
CH2 400sec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div
10mA
PWM/PFM Switching Control FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=10mA 300mA
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=300mA10mA
CH1
3.3V
CH1
3.3V
300mA
300mA
CH2
10mA
CH2
10mA
200sec/div CH1:VOUT2 , AC-COUPLED, 100mV/div CH2:IOUT2 , 150mA/div
200sec/div CH1:VOUT2 , AC-COUPLED, 50mV/div CH2:IOUT2 , 150mA/div
37
XC9502 Series
Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=0.9V, VIN=3.3V PWM Control FOSC=300kHz, VOUT2=0.9V
IN=3.3V, IOUT2=100A 300mA
2ch. Step-up / down DC/DC Controllers ICs
IOUT2=100A
300mA>
FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=300mA100A
CH1
0.9V CH1 0.9V 300mA
300mA
CH2 100A 200sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
CH2 4msec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
100A
PWM/PFM Switching Control FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=100A 300mA
FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=300mA100A
CH1
0.9V CH1 0.9V
300mA
300mA
CH2
100A
CH2 4msec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
100A
200sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
38
XC9502 Series
Load Transient Response [2 channel : Step-down DC/DC Controller] < VOUT2=0.9V, VIN=3.3V PWM Control FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=10mA 300mA
2ch. Step-up / down DC/DC Controllers ICs
IOUT2=10mA
300mA>
FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=300mA 10mA
CH1 0.9V CH1 0.9V
300mA
300mA
CH2
10mA
CH2 100sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
10mA
100sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
PWM/PFM Switching Control FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=10mA 300mA
FOSC=300kHz, VOUT2=0.9V
VIN=3.3V, IOUT2=300mA 10mA
CH1
0.9V CH1 0.9V
300mA
300mA
CH2
10mA
CH2 200sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
10mA
200sec/div CH1:VOUT2 , AC-COUPLED, 20mV/div CH2:IOUT2 , 150mA/div
39
XC9502 Series
Load Transient Response [2 channel : Step-down DC/DC Controller]
2ch. Step-up / down DC/DC Controllers ICs
FOSC=300kHz, VOUT2=3.3V VIN=5.0V, IOUT2=5mA PWM2 'L' 'H'
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=5mA PWM2 'H' 'L'
CH1
3.3V
CH1
3.3V
0.65V CH2 400sec/div CH1:VOUT2 , AC-COUPLED ,10mV/div CH2:PWM2 , 0.5V/div 0V CH2
0.65V 0V 200sec/div CH1:VOUT2, AC-COUPLED ,20mV/div CH2:PWM2, 0.5V/div

FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=300mA EN2 'L''H' CIN=47F
FOSC=300kHz, VOUT2=3.3V
VIN=5.0V, IOUT2=100mA EN2 'L''H' CIN=47F
3.3V CH1 200mA
3.3V CH1
75mA CH2 0.65V CH3 4ms/div CH1:VOUT2 , 2.0V/div CH2:IIN2, 100mA/div CH3:EN2 , 0.5V/div CH3 4ms/div CH1:VOUT2 , 2.0V/div CH2:IIN2, 50mA/div CH3:EN2 , 0.5V/div CH2 0.65V
* EN1=GND
40

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