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XC9501 Series
" 2ch DC/DC Controller (Step-up + Step-up) " Input Voltage Range 0.9V ~ 10.0V " Output Voltage Externally Set-Up " Switching Frequency 180kHz (15%) " Max Duty Ratio 80% (TYP.) " PWM, PWM/PFM Switching Control " High Efficiency 83% (TYP.) " MSOP-10 Package
2ch. Step-up DC/DC Controller ICs.
Mar. 17, 2003 Ver. 5
! Applications # PDAs # Palm top computers # Portable Audio Systems # Various Multi-function Power Supplies ! Features
Input Voltage Range :0.9V ~ 10V Power Supply Voltage Range :2.0V ~ 10V Output Voltage Range :1.5V ~ 30V Can be set freely with 0.9V( 2.0%) of reference voltage supply & external components. Switching Frequency Output Current Stand-by Current Soft-start internally set-up MSOP-10 Package :180kHz 15%
:300kHz & 500kHz available as custom :more than 200mA(VIN=1.8V, VOUT=3.3V)
! General Description
The XC9501 series are PWM controlled, PWM/PFM automatic switching controlled, multi-functional, dual step-up DC/DC converter controller ICs. With 0.9V (2%) of standard voltage supply internal, and using externally connected components, output voltage can be set freely on both DC/DC controllers between 1.5V to 30V. With a 180kHz frequency, the size of the external components can be reduced. 300kHz and 500kHz switching frequencies are also available as custom-designed products. The control of the XC9501 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 to large output currents. Noise is easily reduced with PWM control since the switching frequency is fixed. The XC9501 series provides the option of being able to select the control suited to the application.
:3.0A (MAX)
! Typical Performance Characteristics
Efficiency vs. Output Current XC9501B092A (180kHz,3.3V)
100 90 80 70 60 50 40 30 20 10 0
L1=22H(CDRH5D28), CL1=47F(Tantalum) SD1:MA2Q737, Tr1:XP161A1355P
PWM/PFM Switching Control
Soft-start time is internally set to 10msec which offers protection against rush currents when the power is switched on and also against voltage overshoot.
Efficiency 1 EFFI1 (%)
VIN=1.8V
PWM Control
2.4V
0.1
1
10
100
1000
! Typical Application
( XC9501B092A
VOUT1 =3.3V IOUT1=~200mA
Output Current 1 IOUT1 (mA)
Input: 2 cells, Output
SD1 :MA2Q737
1: 3.3V, Output 2: 5.0V )
L2:22H CDRH5D28 CIN :47F Tr2:Nch MOSFET XP161A1355P SD2 :MA2Q737 VOUT2 =5.0V IOUT2=~100mA
L1:22uH CDRH5D28 VIN Tr1:Nch =1.8V~3.2V MOSFETXP161A1355P
RFB11 :200k
CFB1 :62pF 1 EXT1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 VPWM2 VEN2
CFB2 :160pF
RFB21 :82k
+ CL1 47F ? VPWM1 RFB12 :75k VEN1
2 VDD 3 FB1 4 PWM1 5 EN1
+ 47F CL2
RFB22 :18k
1
XC9501 Series
! Pin Configuration
1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6
2ch. Step-up DC/DC Controller ICs.
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 EXT 2 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
XC9501123456
DESIGNATOR SYMBOL DESCRIPTION
1 2 3 4 5 6
B 0 9 2 3 5 A R L
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
2
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
! 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 Error Amp2 Generator 2
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
! 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
3
XC9501 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Output Voltage Range
(note 4)
2ch. Step-up DC/DC Controller ICs.
XC9501B092A (FOSC=180kHz) Ta=25OC MAX. UNITS 10.0 V V 10.0 V V V 10.0 V 160 A 120 150 132 3.0 207 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 A A A A kHz V V A A A A A A
TEST CIRCUIT
SYMBOL VDD
CONDITIONS
Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 2 Stand-by Current Switching Frequency EN1,2 "High" Voltage EN1,2 "Low" Voltage EN1,2 "High" Current EN1,2 "Low" Current PWM1,2 "High" Current PWM1,2 "Low" Current FB1,2 "High" Current FB1,2 "Low" Current Output 1 Characteristics PARAMETER FB1 Voltage Operation Start-up Voltage1
VDD 2.0V, IOUT1, 2 =1mA VOUT1, VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUTSET (note 2) VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUT2 (note 3) IDD1 FB1,2=0V EN1=3.0V, EN2=0V, FB1=0V IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V IDD1-2 FB1=1.0V, FB2=0V IDD2 FB1,2=1.0V ISTB Same as IDD1, EN1=EN2=0V FOSC Same as IDD1 VENH FB1,2=0V VENL FB1,2=0V IENH FB1,2=3.0V IENL EN1,2=0V, FB1,2=3.0V IPWMH FB1,2=3.0V, PWM=3.0V IPWML FB1,2=3.0V,PWM=0V IFBH FB1,2=3.0V VFBL FB1,2=1V Step-up Controller
MIN. 2.0 0.9 2.0 0.9 0.9 2.0 153 0.65 -
TYP. 90 60 80 70 180 -
1 2 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Unless otherwise stated, VDD=3.0V, PWM1,2=3.0V, EN1, 2 =3.0V
Ta=25OC MIN. 0.882 75 22 5.0 0.65 TYP. 0.900 80 30 83 10.0 28 22 MAX. UNITS 0.918 V 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
TEST CIRCUIT
SYMBOL CONDITIONS VFB1 VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, VST1-1 IOUT=1.0mA, RFB11=200k, RFB12=75k (note 2) VDD VOUT1: IOUT1=1mA VST2-1 FB1=0V Oscillation Start-up Voltage1 MAXDTY1 Same as IDD1 Maximum Duty Ratio1 PFMDTY1 No Load, VPWM1=0V PFM Duty Ratio1 EFFI1 Efficiency1 IOUT1=100mA Nch MOSFET:XP161A1355P TSS1 VOUT1 x 0.95V, CE1=0V0.65V Soft-Start Time1 EXT1 "High" ON Resistance REXTBH1 FB1=0, EXT1=VDD-0.4V EXT1 "Low" ON Resistance REXTBL1 EN1=FB2=0V, EXT1=0.4V VPWMH1 No Load PWM1 "High" Voltage VPWML1 No Load PWM1 "Low" Voltage Output 2 Characteristics PARAMETER FB2 Voltage Operation Start-up Voltage2 Step-up Controller
5 2 1 4 4 6 6 6 7 7 6 6
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Ta=25OC MIN. 0.882 75 22 5.0 0.65 TYP. 0.900 80 25 83 10.0 28 22 MAX. UNITS V 0.918 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
TEST CIRCUIT
SYMBOL CONDITIONS VDD=3.0V, VIN=1.5V, IOUT2=10mA VFB2 Using Tr: 2SD1628, VST1-2 IOUT2=1.0mA, RFB21=200k,RFB22=75k (note 3) VDD VOUT2 : IOUT2=1mA VST2-2 FB2=0V Oscillation Start-up Voltage2 MAXDTY2 Same as IDD1 Maximum Duty Ratio2 PFMDTY2 No Load, VPWM2=0V PFM Duty Ratio2 EFFI2 IOUT2=100mA, Nch MOSFET:XP161A1355P Efficiency2 TSS2 VOUT2 x 0.95V, EN2=0V0.65V Soft-Start Time2 EXT2 "High" ON Resistance REXTBH2 FB2=0, EXT2=VDD-0.4V EXT2 "Low" ON Resistance REXTBL2 EN2=FB2=0V, EXT2=0.4V VPWMH2 No Load PWM2 "High" Voltage VPWML2 No Load PWM2 "Low" Voltage
8 3 1 4 4 9 9 9 7 7 9 9
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
4
XC9501 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Output Voltage Range
(note 4)
2ch. Step-up DC/DC Controller ICs.
XC9501B093A CONDITIONS (FOSC=300kHz) Ta=25OC MIN. TYP. MAX. UNITS CIRCUIT 10.0 V 2.0 0.9 V 1 2.0 10.0 V 2 V 0.9 0.9 V 3 2.0 10.0 V 110 250 A 4 255 0.65 80 90 80 300 150 200 160 3.0 345 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 A A A A kHz V V A A A A A A
SYMBOL VDD
Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 2 Stand-by Current Switching Frequency EN1,2 "High" Voltage EN1,2 "Low" Voltage EN1,2 "High" Current EN1,2 "Low" Current PWM1,2 "High" Current PWM1,2 "Low" Current FB1,2 "High" Current FB1,2 "Low" Current
VDD 2.0V, IOUT1, 2 =1mA VOUT1, VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUTSET (note 2) VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUT2 (note 3) IDD1 FB1,2=0V EN1=3.0V, EN2=0V, FB1=0V IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V IDD1-2 FB1=1.0V, FB2=0V IDD2 FB1,2=1.0V ISTB Same as IDD1, EN1=EN2=0V Same as IDD1 FOSC VENH FB1,2=0V VENL FB1,2=0V IENH FB1,2=3.0V IENL EN1,2=0V, FB1,2=3.0V IPWMH FB1,2=3.0V, PWM=3.0V IPWML FB1,2=3.0V,PWM=0V IFBH FB1,2=3.0V VFBL FB1,2=1V
4 4 4 4 4 4 4 4 4 4 4 4 4
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)
SYMBOL VFB1 VST1-1
Oscillation Start-up Voltage1
VST2-1 MAXDTY1 Maximum Duty Ratio1 PFMDTY1 PFM Duty Ratio1 EFFI1 Efficiency1 TSS1 Soft-Start Time1 EXT1 "High" ON Resistance REXTBH1 EXT1 "Low" ON Resistance REXTBL1 VPWMH1 PWM1 "High" Voltage VPWML1 PWM1 "Low" Voltage
Step-up Controller CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, IOUT=1.0mA, RFB11=200k, RFB12=75k VDD VOUT1: IOUT1=1mA FB1=0V Same as IDD1 No Load, VPWM1=0V IOUT1=100mA, Nch MOSFET:XP161A1355P VOUT1 x 0.95V, CE1=0V0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load
MIN. 0.882 75 22 5.0 0.65 -
TYP. 0.900 80 30 83 10.0 28 22 -
Ta=25OC MAX. UNITS CIRCUIT 5 0.918 V 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
2 1 4 4 6 6 6 7 7 6 6
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics PARAMETER FB2 Voltage Operation Start-up Voltage2
(note 3) Oscillation Start-up Voltage2
SYMBOL VFB2 VST1-2
VST2-2 MAXDTY2 Maximum Duty Ratio2 PFMDTY2 PFM Duty Ratio2 EFFI2 Efficiency2 TSS2 Soft-Start Time2 EXT2 "High" ON Resistance REXTBH2 EXT2 "Low" ON Resistance REXTBL2 VPWMH2 PWM2 "High" Voltage VPWML2 PWM2 "Low" Voltage
Step-up Controller CONDITIONS VDD=3.0V, VIN=1.5V, IOUT2=10mA Using Tr: 2SD1628, IOUT2=1.0mA, RFB21=200k,RFB22=75k VDD VOUT2 : IOUT2=1mA FB2=0V Same as IDD1 No Load, VPWM2=0V IOUT2=100mA, Nch MOSFET:XP161A1355P VOUT2 x 0.95V, EN2=0V0.65V FB2=0, EXT2=VDD-0.4V EN2=FB2=0V, EXT2=0.4V No Load No Load
MIN. 0.882 75 22 5.0 0.65 -
TYP. 0.900 80 30 83 10.0 28 22 -
Ta=25OC MAX. UNITS CIRCUIT 8 0.918 V 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
3 1 4 4 9 9 9 7 7 9 9
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
5
XC9501 Series
! Electrical Characteristics
Common Characteristics PARAMETER Supply Voltage (note 1) Output Voltage Range
(note 4)
2ch. Step-up DC/DC Controller ICs.
XC9501B095A CONDITIONS (FOSC=500kHz) Ta=25OC MIN. TYP. MAX. UNITS CIRCUIT 10.0 V 2.0 0.9 V 1 2.0 10.0 V 2 V 0.9 0.9 V 3 2.0 10.0 V 165 350 A 4 425 0.65 110 130 100 500 220 270 200 3.0 575 0.20 0.50 -0.50 0.50 -0.50 0.50 -0.50 A A A A kHz V V A A A A A A
SYMBOL VDD
Supply Current 1 Supply Current 1-1 Supply Current 1-2 Supply Current 2 Stand-by Current Switching Frequency EN1,2 "High" Voltage EN1,2 "Low" Voltage EN1,2 "High" Current EN1,2 "Low" Current PWM1,2 "High" Current PWM1,2 "Low" Current FB1,2 "High" Current FB1,2 "Low" Current
VDD 2.0V, IOUT1, 2 =1mA VOUT1, VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUTSET (note 2) VOUT2 VOUT1 VIN 0.9V, IOUT1, 2=1mA VOUT2 (note 3) IDD1 FB1,2=0V EN1=3.0V, EN2=0V, FB1=0V IDD1-1 EN2=3.0V, EN1=0V, FB2=0V FB1=0V, FB2=1.0V IDD1-2 FB1=1.0V, FB2=0V IDD2 FB1,2=1.0V ISTB Same as IDD1, EN1=EN2=0V Same as IDD1 FOSC VENH FB1,2=0V VENL FB1,2=0V IENH FB1,2=3.0V IENL EN1,2=0V, FB1,2=3.0V IPWMH FB1,2=3.0V, PWM=3.0V IPWML FB1,2=3.0V,PWM=0V IFBH FB1,2=3.0V VFBL FB1,2=1V
4 4 4 4 4 4 4 4 4 4 4 4 4
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
SYMBOL VFB1 VST1-1
VST2-1 MAXDTY1 Maximum Duty Ratio1 PFMDTY1 PFM Duty Ratio1 EFFI1 Efficiency1 TSS1 Soft-Start Time1 EXT1 "High" ON Resistance REXTBH1 EXT1 "Low" ON Resistance REXTBL1 VPWMH1 PWM1 "High" Voltage VPWML1 PWM1 "Low" Voltage
Step-up Controller CONDITIONS VDD=3.0V, VIN=1.5V, IOUT1=10mA Using Tr: 2SD1628, IOUT=1.0mA, RFB11=200k, RFB12=75k VDD VOUT1: IOUT1=1mA FB1=0V Same as IDD1 No Load, VPWM1=0V IOUT1=100mA, Nch MOSFET:XP161A1355P VOUT1 x 0.95V, CE1=0V0.65V FB1=0, EXT1=VDD-0.4V EN1=FB2=0V, EXT1=0.4V No Load No Load
MIN. 0.882 75 22 5.0 0.65 -
TYP. 0.900 80 30 83 10.0 28 22 -
Ta=25OC MAX. UNITS CIRCUIT 5 0.918 V 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
2 1 4 4 6 6 6 7 7 6 6
Unless otherwise stated, VDD=EN1=PWM1=3.0V, EN2=PWM2=GND, EXT2=OPEN, FB2=OPEN, VIN=1.8V
Output 2 Characteristics PARAMETER FB2 Voltage Operation Start-up Voltage2
(note 3) Oscillation Start-up Voltage2
SYMBOL VFB2 VST1-2
VST2-2 MAXDTY2 Maximum Duty Ratio2 PFMDTY2 PFM Duty Ratio2 EFFI2 Efficiency2 TSS2 Soft-Start Time2 EXT2 "High" ON Resistance REXTBH2 EXT2 "Low" ON Resistance REXTBL2 VPWMH2 PWM2 "High" Voltage VPWML2 PWM2 "Low" Voltage
Step-up Controller CONDITIONS VDD=3.0V, VIN=1.5V, IOUT2=10mA Using Tr: 2SD1628, IOUT2=1.0mA, RFB21=200k,RFB22=75k VDD VOUT2 : IOUT2=1mA FB2=0V Same as IDD1 No Load, VPWM2=0V IOUT2=100mA, Nch MOSFET:XP161A1355P VOUT2 x 0.95V, EN2=0V0.65V FB2=0, EXT2=VDD-0.4V EN2=FB2=0V, EXT2=0.4V No Load No Load
MIN. 0.882 75 22 5.0 0.65 -
TYP. 0.900 80 30 83 10.0 28 22 -
Ta=25OC MAX. UNITS CIRCUIT 8 0.918 V 0.9 2.0 0.8 85 38 20.0 47 30 0.20 V V V % % % mS V V
3 1 4 4 9 9 9 7 7 9 9
Unless otherwise stated, VDD=EN2=PWM2=3.0V, PWM1=EN1=GND, EXT1=OPEN, FB1=OPEN, VIN=1.8V
6
XC9501 Series
2ch. Step-up DC/DC Controller ICs.
Notes Although the IC's step-up operations start from a V DD of 0.8V, the output voltage and switching frequency are stabilized 1) at VDD 2.0V. Therefore, a VDD of more than 2.0V is recommended when V DD is supplied from VIN or oTher power sources. 2) Although the IC's switching operations start from a V IN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to V OUT1. With operations from V IN=0.9V, the 2nd channel's (output 2) E N2 pin should be set to disable. Once ouput voltage V OUT1 is more than 2.0V, the EN2 pin should be set to enable. Although the IC's switching operations start from a V IN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB2) should be connected to V OUT2. With operations from V IN=0.9V, the 1st channel's (output 1) E N1 pin should be set to disable. Once ouput voltage V OUT2 is more than 2.0V, the EN1 pin should be set to enable. Please be careful not to exceed the breakdown voltage level of the peripheral parts.
EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100
3)
4) 5)
! Typical Application Circuit
1 VDD connected to VOUT1
VOUT1 SD1 L1 VIN Tr1 CIN Tr2 L2 SD2 VOUT2
CFB2 CFB1 RFB11 + CL1 VPWM1 RFB12 VEN1
1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6
RFB21 + CL2 VPWM2 VEN2 RFB22
2 VDD connected to VIN
VOUT1 SD1 L1 VIN Tr1 CDD CFB2 CFB1 RFB11 + CL1 VPWM1 RFB12 VEN1
1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6
L2 CIN Tr2
SD2
VOUT2
RFB21 + CL2 VPWM VPWM2 VEN2 RFB22
7
XC9501 Series
! Operation Description
2ch. Step-up DC/DC Controller ICs.
The XC9501 series are multi-functional, 2 channel step-up 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 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). When both EN1 and EN2 are in a state of 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 enable and operations will recommence. With soft-start, 95% of the set output voltage will be reached within 10mS (TYP) from the moment of enable.
The start-up sequence for EN1 and EN2 is required when operations begin with a power supply voltage of VDD<2.0V or less. 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. When the IC starts operations from a VIN of 0.9V, set channel two's (output 2) EN2 pin to disable and turn it to enable when VOUT1 is more than 2.0V. Conversely, when IC 2's power supply pin (VDD) and output voltage monitor pin (FB2) are connected to VOUT2, set channel one's (output 1) EN1 pin to disable and turn it to enable when VOUT2 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 VDD>2.0V or more. With power supply voltages of VDD>2.0V, the start-up sequence for EN1 and EN2 will not be required.
8
XC9501 Series
2ch. Step-up 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 resulted fzfb = 1 / (2 x CFB1 x RFB11) equal to 12kMz. 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 (V) RFB11 RFB12 CFB1 (pF) (k) (k) VOUT (V) RFB11 RFB12 CFB1 (pF) (k) (k) VOUT (V) RFB11 RFB12 CFB1 (pF) (k) (k)
1.5 1.8 2.0 2.2 2.5
220 330 62 2.7 360 180 33 12.0 220 220 62 3.0 560 240 24 330 270 39 3.3 200 75 62 390 270 33 5.0 82 18 160 390 220 33 8.0 120 15 100 The same method can be adopted for channel two (output 2) also.
160
13
82
[External Components] Tr : * MOSFET
XP161A1355PR (TOREX N-Channel Power MOSFET)
Note : VGS Breakdown Voltage of this Tr. is 8V so please be careful with the power supply voltage. If the power supply voltage is more than 6V, please use XP161A1265PR, where VGS Breakdown Voltage is 12V. VST1 of XP161A1355PR is 1.2V (max.) and that of XP161A1265PR is 1.5V (max.) SD : L:
* NPN MOSFET 2SD1628 (SANYO) Rb : 500 Cb ( Adjust in accordance with load & Tr.'s HFE.) : 2200pF (Ceramic) Set up according to the equation below. Cb 1/(2 x Rb x Fosc x 0.7)
CL :
MA2Q737 (Schottky , MATSUSHITA) CMS02 (Schottky , TOSHIBA) 22H (SUMIDA, CDRH5D28, FOSC = 180kHz) 15H (SUMIDA, CDRH5D28, FOSC = 300kHz) 10H (SUMIDA, CDRH5D28, FOSC = 500kHz) 16V, 47F (Tantalum, NICHICHEMI MCE series) Increase capacity according to the equation below when the step-up voltage ratio is large and output current is high. CL = (CL standard value) x (IOUT (mA) / 300mA xVOUT/VIN
9
XC9501 Series
! Test Circuit
2ch. Step-up DC/DC Controller ICs.
Circuit 1
VOUT1 SD1 L1 VIN 510 NPN Tr1 CFB1 + CL1 RL1 4 PWM1 RFB12 5 EN1 EN2 6 PWM2 7 RFB22 2200pF 1F 3 FB1 FB2 8 CL2 RL2 1 EXT1 2 VDD EXT2 10 GND 9 2200pF + CIN 510 L2 SD2 VOUT2
Circuit 6
VOUT1 SD1 L1 A Nch MOSFET1 A NPN Tr2 CFB2 1 EXT1 200k RFB21 + V RL 4 PWM1 75k OSC VPWM1 VEN1 5 EN1 EN2 6 PWM2 7 + CL1 62pF 2 VDD 3 FB1 GND 9 FB2 8 EXT2 10 VIN + CIN
RFB11
Circuit 2
VOUT1 SD1 L1 VIN 510 NPN Tr1 CFB1 + CL1 RL1 4 PWM1 RFB12 5 EN1 EN2 6 PWM2 7 RFB22 3 FB1 FB2 8 CL2 RL2 1 EXT1 2200pF 2 VDD EXT2 10 GND 9 2200pF + CIN 510 NPN Tr2 CFB2 + L2 SD2 VOUT2
Circuit 7
1 EXT1 2 VDD RFB21 Rp OSC 1F VDD VPWM1 5 EN1 3 FB1 4 PWM1
EXT2 10 GND 9 FB2 8 PWM2 7 OSC EN2 6 VPWM2 VEXT2 VFB2 Rp
RFB11
VEXT1
VFB1
VEN1
VEN2
Circuit 3
VOUT1 SD1 L1 + VIN 510 NPN Tr1 CFB1 + RL1 CL1 RFB12 5 EN1 EN2 6 2200pF 1 EXT1 2 VDD 3 FB1 4 PWM1 EXT2 10 GND 9 FB2 8 PWM2 7 RFB22 2200pF CIN 510 NPN Tr1 CFB2 + CL2 RL2 + RFB21 CIN L2 SD2 VOUT2
Circuit 8
Nch MOSFET2 L2 VOUT2
A A VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 VDD EXT2 10 GND 9 FB2 8 PWM2 7 EN2 6 SD2 + CL2 RL
RFB11
V
1F
Circuit 4
Circuit 9
L2 SD2 VOUT2
1 EXT1 2 VDD 3 FB1 A OSC 1F A A A 4 PWM1 5 EN1
EXT2 10 GND 9 CIN FB2 8 PWM2 7 EN2 6 A A A OSC +
A VIN 1 EXT1 2 VDD 3 FB1 4 PWM1 5 EN1 EXT2 10
Nch MOSFET2 200k GND 9 FB2 8 PWM2 7 75k EN2 6 VEN2 VPWM2 62pF OSC CL2 +
A
V RL
VDD
VFB1
VPWM1
VEN1
VEN2
VPWM2
VFB2
Circuit 5
L1 VOUT1 Nch MOSFET1
SD1 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
10
XC9501 Series
! Peripheral Components Used for Test Circuits
2ch. Step-up DC/DC Controller ICs.
Circuit 1, Circuit 2, Circuit 3 L1, L2 : 22H (SUMIDA CDRH5D28) : XC9501B092A 15H (SUMIDA CDRH5D28) : XC9501B093A 10H (SUMIDA CDRH5D28) : XC9501B095A SD1, SD2 : CRS02 (Schottky diode, TOSHIBA) EC10QS06 (Schottky diode, NIHON INTER) CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON) 35MCE335MB2 (Tantalum, NIHON CHEMICON) CIN : 16MCE476MD2 (Tantalum, NIHON CHEMICON) NPN Tr1, 2: 2SA1628 (SANYO) CPH3215 (SANYO) CPH3210 (SANYO) RFB : Please use by the conditions as below. RFB11 + RFB12 1M RFB21 + RFB22 1M RFB11 / RFB12 = (Setting Output Voltage / 0.9) -1 RFB21 / RFB22 = (Setting Output Voltage / 0.9) -1 CFB : 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) Circuit 6 and Circuit 9 L1, L2 : 22H (SUMIDA CDRH5D28) : XC9501B092A 15H (SUMIDA CDRH5D28) : XC9501B093A 10H (SUMIDA CDRH5D28) : XC9501B095A SD1, SD2: MA2Q737 (Schottky diode, MATSUSHITA) CL1, CL2 : 16MCE476MD2 (Tantalum, NIHON CHEMICON) CIN : 16MCE476MD2 (Tantalum, NIHON CHEMICON) N-ch MOSFET1 : XP161A1355P (TOREX) Circuit 5 and Circuit 8 L1, L2 : SD1, SD2 : CL1, CL2 : CIN : N-ch MOSFET1 :
22H (SUMIDA CDRH5D28) MA2Q737 (Schottky, MATSUSHITA) 16MCE476MD2 (Tantalum, NIHON CHEMICON) 16MCE476MD2 (Tantalum, NIHON CHEMICON) XP161A1355P (TOREX)
11
XC9501 Series
! Notes on Use
2ch. Step-up DC/DC Controller ICs.
1. PWM/PFM Automatic Switching If PWM/PFM automatic switching control is selected and the step-up ratio is low (e.g., from 4.5 V to 5.0 V), the control mode remains in PFM setting over the whole load range, since the duty ratio under continuous-duty condition is smaller than the PFM duty ratio of the XC9501 series. The output voltage's ripple voltage becomes substantially high under heavy load conditions, with the XC9501 series appearing to be producing an abnormal oscillation. If this operation becomes a concern, set pins PWM 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 XC9501 series and peripheral components within the limits of their ratings.
12
XC9501 Series
Typical Performance Characteristics
(1) Output Voltage vs. Output Current
2ch. Step-up DC/DC Controller ICs.
FOSC=180kHz, VOUT1, 2= 1.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=180kHz, VOUT1, 2= 2.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
1.7 Output Voltage1, 2 VOUT1, 2 (V)
2.7 Output Voltage1, 2 VOUT1 , 2(V)
PWM/PFM Switching Control PWM Control
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, 2 IOUT1, 2 (mA)
2.2 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=180kHz, VOUT1, 2= 5.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
3.5 Output Voltage1, 2 VOUT1, 2 (V)
5.2 Output Voltage1, 2 VOUT1, 2 (V)
PWM/PFM Switching Control PWM Control
PWM/PFM Switching Control PWM Control
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, 2 IOUT1, 2 (mA)
4.7 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1265P
PWM/PFM Switching Control PWM Control
8.2 Output Voltage1, 2 VOUT1, 2 (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, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
13
XC9501 Series
(1) Output Voltage vs. Output Current (Continued)
2ch. Step-up DC/DC Controller ICs.
FOSC=300kHz, VOUT1, 2= 2.5V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT1, 2= 3.3V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
2.7 Output Voltage1, 2 VOUT1, 2 (V)
3.5 Output Voltage1, 2 VOUT1, 2 (V)
1.5V 2.6
2.7V 3.4
2.5
3.3 VIN=0.9V 1.2V 3.1 1.5V
2.4
VIN=0.9V 1.2V
3.2
2.3
2.2 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
3.0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=500kHz, VOUT1, 2= 2.5V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
5.2 Output Voltage1, 2 VOUT1, 2 (V)
5.1
3.3V
Output Voltage1, 2 VOUT1, 2 (V)
PWM/PFM Switching Control PWM Control
2.7
4.2V
2.6
1.5V
5.0
2.5
4.9
VIN=1.2V 1.5V
2.7V
2.4
VIN=0.9V 1.2V
4.8
2.3
4.7 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
2.2 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=500kHz, VOUT1, 2= 5.0V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
3.5 Output Voltage1, 2 VOUT1, 2 (V)
3.4 1.5V 3.3
2.7V
Output Voltage1, 2 VOUT1, 2 (V)
PWM/PFM Switching Control PWM Control
5.2
4.2V
5.1 3.3V 5.0
3.2
VIN=0.9V
4.9 VIN=0.9V 1.2V 2.7V 1.5V
1.2V
3.1
4.8
3.0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
4.7 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
14
XC9501 Series
(2) Efficiency vs. Output Current
2ch. Step-up DC/DC Controller ICs.
FOSC=180kHz, VOUT1, 2= 1.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=180kHz, VOUT1, 2= 2.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100 Efficiency1, 2 EFFI 1, 2 (%)
100 Efficiency1, 2 EFFI 1, 2 (%)
80
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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=180kHz, VOUT1, 2= 5.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100 Efficiency1, 2 EFFI 1, 2 (%)
100 Efficiency1, 2 EFFI 1, 2 (%)
80
2.7V
80 4.2V 60 VIN=1.5V 3.3V 2.7V 40
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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1265P
100 Efficiency1, 2 EFFI 1, 2 (%)
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, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
15
XC9501 Series
(2) Efficiency vs. Output Current (Continued)
2ch. Step-up DC/DC Controller ICs.
FOSC=300kHz, VOUT1, 2= 2.5V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=300kHz, VOUT1, 2= 3.3V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100
100
2.7V
Efficiency1, 2 EFFI 1, 2 (%)
80 1.5V 60 VIN=0.9V 1.2V
Efficiency1, 2 EFFI 1, 2 (%)
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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=500kHz, VOUT1, 2= 2.5V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100 Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
80 4.2V 3.3V 2.7V VIN=1.2V 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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1, 2= 5.0V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100
100
4.2V
Efficiency1, 2 EFFI 1, 2 (%)
Efficiency1, 2 EFFI 1, 2 (%)
80 2.7V VIN=0.9 40 1.2V 1.5V
80 3.3V 1.2V 40 VIN=0.9V 1.5V 2.7V
60
60
20
20
PWM/PFM Switching Control PWM Control
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
16
XC9501 Series
(3) Ripple Voltage vs. Output Current
2ch. Step-up DC/DC Controller ICs.
FOSC=180kHz, VOUT1, 2= 1.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
FOSC=180kHz, VOUT1, 2= 2.5V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100
PWM/PFM Switching Control PWM Control
100
PWM/PFM Switching Control PWM Control
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 3.3V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=180kHz, VOUT1, 2= 5.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
100
100
PWM/PFM Switching Control PWM Control
4.2V
Ripple Voltage1, 2 (mV)
Ripple Voltage1, 2 (mV)
80
80 2.7V VIN=1.5V 40
60 VIN=0.9V 2.7V 20
1.5V
60
40
20
3.3V
1.2V 0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA) 0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=180kHz, VOUT1, 2= 8.0V
L=22H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1265P
100
PWM/PFM Switching Control PWM Control
Ripple Voltage1, 2 (mV)
80 4.2V 60 VIN=3.3V 40 5.0V
20
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
17
XC9501 Series
(3) Ripple Voltage vs. Output Current (Continued)
2ch. Step-up DC/DC Controller ICs.
FOSC=300kHz, VOUT1, 2= 2.5V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=300kHz, VOUT1, 2= 3.3V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
Ripple Voltage1, 2 (mV)
1.2V 60 VIN=0.9V
Ripple Voltage1, 2 (mV)
80
1.5V
1.5V 1.2V
80
60 VIN=0.9V 40 2.7V 20
40
20
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
FOSC=300kHz, VOUT1, 2= 5.0V
L=15H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1, 2= 2.5V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
100 80 60 40 20 0 0.1
3.3V 2.7V 1.5V
4.2V Ripple Voltage1, 2 (mV)
100 80
Ripple Voltage1, 2 (mV)
1.5V 1.2V
VIN=1.2V
60 40 20 0
VIN=0.9V
1
10
100
1000
0.1
1
10
100
1000
Output Current 1, 2 IOUT1, 2 (mA)
Output Current 1, 2 IOUT1, 2 (mA)
FOSC=500kHz, VOUT1, 2= 3.3V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
FOSC=500kHz, VOUT1, 2= 5.0V
L=10H(CDRH5D28), CL=94F(Tantalum) SD:CMS02, Tr:XP161A1355P
PWM/PFM Switching Control PWM Control
100
100
Ripple Voltage1, 2 (mV)
1.2V
Ripple Voltage1, 2 (mV)
80
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, 2 IOUT1, 2 (mA)
0 0.1 1 10 100 1000 Output Current 1, 2 IOUT1, 2 (mA)
Dotted Arrowhead
PWM/PFM Switching Control
18
XC9501 Series
! Typical Performance Characteristics (Continued)
2ch. Step-up DC/DC Controller ICs.
(4) Supply Current vs. Supply Voltage XC9501B092 (180kHz)
500 Supply Current 1 IDD1 (A) 400 300 200 100 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C - 40o C
(5) Supply Current 1-1 vs. Supply Voltage XC9501B092 (180kHz)
400 Topr=85o C 25o C - 40o C
Supply Current 1-1 IDD1-1 (A)
300
200
100
0 0 2 4 6 8 10 Supply Voltage VDD (V)
(6) Supply Current 1-2 vs. Supply Voltage XC9501B092 (180kHz)
Supply Current1-2 IDD1-2 (A) 400 300 200 100 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C - 40o C
(7) Supply Current 2 vs. Supply Voltage XC9501B092 (180kHz)
400 Supply Current 2 IDD2 (A) Topr=85o C 25o C - 40o C
300
200
100
0 0 2 4 6 8 10 Supply Voltage VDD (V)
(8) Stand-by Current vs. Supply Voltage XC9501B092 (180kHz)
10 Stand-by Current ISTB (A) 8 6 4 2 0 0 2 4 6 8 10 Topr=85 C 25o C - 40o C
o
(9) Oscillation Frequency vs. Supply Voltage XC9501B092 (180kHz)
Oscillation Frequency Fosc (kHz)
210 200 190 Topr=25o C 180 170 160 - 40o C 150 0 2 4 6 8 10 Supply Voltage VDD (V) 85o C
Supply Voltage VDD (V)
19
XC9501 Series
(10) PWM1, 2 'H' 'L' Voltage vs. Supply Voltage XC9501B092 (180kHz)
PWM1, 2 'H' ' L' Voltage Vpwm1, 2 (V)
2ch. Step-up DC/DC Controller ICs.
(11) EN1, 2 'H' 'L' Voltage vs. Supply Voltage XC9501B092 (180kHz)
EN1, 2 'H' ' L' Voltage VEN1, 2 (V) 0.8 0.6 - 40oC 0.4 0.2 0 0 2 4 6 8 10 Supply Voltage VDD (V) 85o C
0.8 0.6 0.4 0.2 Topr=25o C 0 0 2 4 6 8 10 Supply Voltage VDD (V) 85o C
- 40oC
Topr=25o C
(12) Maximum Duty Ratio1, 2 vs. Supply Voltage XC9501B092 (180kHz)
Max Duty Ratio 1, 2 Maxdty1, 2 (%)
(13) Softstart Time1, 3 vs. Supply Voltage XC9501B092 (180kHz)
Softstart Time1, 2 TSS (msec) 25 20 15 10 5 0 0 2 4 6 8 10 Supply Voltage VDD (V)
90 85 80 75 70 65 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85 C 25o C - 40o C
o
(14) EXT1, 2 High ON Resistance vs. Supply Voltage XC9501B092 (180kHz)
50 40 30 20 10 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C - 40o C
(15) EXT1, 2 Low ON Resistance vs. Supply Voltage XC9501B092 (180kHz)
50 40 30 20 10 0 0 2 4 6 8 10 Supply Voltage VDD (V) Topr=85o C 25o C - 40o C
EXT1, 2 H ON Resistance ()
20
EXT1, 2 L ON Resistance ()
XC9501 Series
(16) Operation Start-Up Voltage vs. Ambient Temperature XC9501B092 (180kHz,VOUT=3.3V)
Operation Start-Up Voltage VST1 (V) 1.2 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
2ch. Step-up DC/DC Controller ICs.
(17) Operation Retention Voltage vs. Ambient Temperature XC9501B092(180kHz,VOUT=3.3V)
Operation Retention Voltage VHLD (V) 0.8 0.6 0.4 0.2 IOUT=1mA 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta ( o C)
L=22H(CDRH5D28), CL=47F(Tantalum) SD:MA2Q737, Tr:2SD1628G
(18) Oscillation Start-Up Voltage vs. Ambient Temperature XC9501B092(180kHz,VOUT=2.0V)
Oscillation Start-Up Voltage VST2 (V)
(19) PFM Duty Ratio 1, 2 vs. Supply Voltage XC9501B092 (180kHz)
40 PFM Duty Ratio 1, 2 (%) 35 30 25 20 Topr=85o C 25o C - 40o C
1 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 100 Ambient Temperature Ta ( o C)
0
2
4
6
8
10
Supply Voltage VDD (V)
(20) Output Voltage vs. Ambient Temperature
XC9501B093(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
21
XC9501 Series
! Load Transient Response
2ch. Step-up DC/DC Controller ICs.
< VOUT1 = 3.3V, VIN = 2.0V " PWM Control
IOUT1, 2 =100A ! 100mA >
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100A 100mA
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA 100A
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2 200sec/div CH1:VOUT1 , 2, AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
100A
CH2 10msec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
100A
" PWM/PFM Switching Control FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100A 100mA
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA 100A
CH1
3.3V CH1
3.3V
100mA
100mA
CH2 200sec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
100A
CH2 10msec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
100A
22
XC9501 Series
< VOUT1 = 3.3V, VIN = 2.0V " PWM Control
2ch. Step-up DC/DC Controller ICs.
IOUT1, 2 =10mA ! 100mA >
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=10mA 100mA
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2 200sec/div CH1:VOUT1 , 2, AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
10mA
CH2 200sec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
10mA
" PWM/PFM Switching Control FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=10mA100mA
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA 10mA
CH1
3.3V
CH1
3.3V
100mA
100mA
CH2 200sec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
10mA
CH2 200sec/div CH1:VOUT1, 2 , AC-COUPLED, 50mV/div CH2:IOUT1, 2 , 50mA/div
10mA
23
XC9501 Series
< PWM Controlled ! PWM / PFM Switching Controlled >
2ch. Step-up DC/DC Controller ICs.
FOSC=180kH, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=1mA PWM1, 2, 'L''H'
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=1mA PWM1, 2, 'H''L'
CH1
3.3V CH1 3.3V
0.65V 0V CH2 1msec/div CH1:VOUT1, 2 , AC-COUPLED ,10mV/div CH2:PWM1, 2 , 0.5V/div
0.65V 0V
CH2 1msec/div CH1:VOUT1, 2 , AC-COUPLED ,10mV/div CH2:PWM1, 2 , 0.5V/div
" Soft Start Wave Form
FOSC=180kHz, VOUT1, 2=3.3V
VIN=2.0V, IOUT1, 2=100mA EN1, 2 'L''H' CIN=47F
3.3V
300mA CH1
CH2 0.65V CH3 4ms/div CH1:VOUT1, 2 , 1.0V/div CH2:IIN1, 2 , 100mA/div CH3:EN1, 2 , 0.5V/div
* CH1: CH2:
EN2=GND when measurement EN1=GND when measurement
24

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