View UPC1909_158145.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

DATA SHEET
Bipolar Analog Integrated Circuit
PC1909
SWITCHING REGULATOR CONTROL IC
The PC1909 is a switching regulator control IC ideal for primary side control of active-clamp type
Note
DC/DC
converters. This IC has 2 outputs employing a totem-pole circuit with peak output current 1.2 A, and is capable of directly driving a power MOS-FET. As a result, it has been possible to realize primary side control of an active-clamp type converter on a single chip. Note It is necessary to obtain license from Vicor Corporation before using the PC1909 in an active-clamp type circuit.
FEATURES
* 2 on-chip outputs; for Q and Q * Capable of directly driving a power MOS-FET * Drive supply voltage range: 7 V to 24 V * On-chip remote control circuit * On-chip pulse-by-pulse overcurrent protection circuit * On-chip overvoltage latch circuit
ORDERING INFORMATION
Part Number Package 16-pin plastic DIP (300 mils) 16-pin plastic SOP (300 mils)
PC1909CX PC1909GS
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability and additional information.
Document No. G14309EJ1V0DS00 (1st edition) Date Published July 1999 N CP(K) Printed in Japan
(c)
1999
PC1909
BLOCK DIAGRAM
CT 16 RT 15 VREF 14 DTC1 13 FB 12 PWM comparator 1 - + + OUT1 11 EMI1 10 VCC 9
Oscillator
Reference power supply
OLS
ON/OFF control Overvoltage protection Overcurrent protection
+ - - PWM comparator 2
1 OV
2 CT2
3 GND
4 OC
5 DTC2
6 OUT2
7 ON/OFF
8 EMI2
2
Data Sheet G14309EJ1V0DS00
PC1909
PIN CONFIGURATION (TOP VIEW)
16-pin plastic DIP (300 mils)
PC1909CX
16-pin plastic SOP (300 mils)
PC1909GS
OV CT2 GND OC DTC2 OUT2 ON/OFF EMI2 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 CT RT VREF DTC1 FB OUT1 EMI1 VCC
PIN FUNCTION LIST
Pin Number 1 2 3 4 5 6 7 8 Pin Name OV CT2 GND OC DTC2 OUT2 ON/OFF EMI2 Function Overvoltage protection OLS shift setting Ground Overcurrent protection OUT2 dead-time setting OUT2 output ON/OFF control OUT2 emitter Pin Number 9 10 11 12 13 14 15 16 Pin Name VCC EMI1 OUT1 FB DTC1 VREF RT CT Function Power supply OUT1 emitter OUT1 output Feedback input OUT1 dead-time setting Reference voltage output Timing resistance Timing capacitance
Data Sheet G14309EJ1V0DS00
3
PC1909
ELECTRICAL SPECIFICATIONS
Absolute Maximum Ratings (Unless otherwise specified, TA = 25C)
Parameter Supply Voltage Output Current (DC, per output) Output Current (peak, per output) Total Power Dissipation Operating Ambient Temperature Operating Junction Temperature Storage Temperature Symbol VCC IC (DC) IC (peak) PT TA TJ Tstg 1000 -20 to +85 -20 to +150 -55 to +150
PC1909CX
26 100 1.2
PC1909GS
Unit V mA A
694
mW C C C
Caution Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any parameter. That is, the absolute maximum ratings are rated values at which the product is on the verge of suffering physical damage, and therefore the product must be used under conditions that ensure that the absolute maximum ratings are not exceeded. Recommended Operating Conditions
Parameter Supply Voltage Oscillation Frequency Output Load Capacitance Output Load Resistance Operating Junction Temperature Symbol VCC fOSC CL RL TJ 10 -20 +100 MIN. 7 50 TYP. 10 200 2200 MAX. 24 500 3000 Unit V kHz pF k C
4
Data Sheet G14309EJ1V0DS00
PC1909
Electrical Characteristics (Unless otherwise specified, TA = 25C, VCC = 10 V, RT = 10 k, fosc = 200 kHz)
Block Total Parameter Standby Current Circuit Current UnderVoltage Lockout Circuit Reference Voltage Start-Up Threshold Voltage Operating Voltage Hysteresis Width Output Voltage Line Regulation Symbol ICC (SB) ICC VCC (L to H) VH Conditions VCC = 7 V Without load 6 8 3 MIN. TYP. 0.1 12 9 4 18 10 5 MAX. Unit mA mA V V
VREF REGIN
IREF = 0 A 8 V VCC 15 V, IREF = 0 A 1 mA IREF 4 mA -10C TA +85C, IREF = 0 A IREF = 0 A
4.7
4.9 1
5.1 10
V mV
Load Regulation Output Voltage Temperature Coefficient Short Circuit Current Oscillation Oscillation Frequency Frequency Line Regulation Frequency Temperature Coefficient PWM Comparator Input Bias Current
REGL
6 400
12 (700)
mV
VREF/T
IO short fOSC
V/C
mA
15 180 200 1 2 (5) 220
kHz % %
f/V f/T
IB (COMP1) IB (COMP2)
8 V VCC 15 V -10C TA +85C
VCOMP1 = VREF VCOMP2 = VREF 1.5 3.5 -10C TA +85C, VD = 0.46 VREF ISINK = 3 mA ISOURCE = 30 mA RL = 15 , CL = 2200 pF RL = 15 , CL = 2200 pF 2.4 2.2 0.1 190 VCC = 0 V VCC - 1.6 60 40 2.6 2.4 0.2 210 200 150 2 VOV = VREF 2 750 2.4 3
10 10
A A
V V %
Low-level Threshold Voltage High-level Threshold Voltage Dead-time Temperature Coeficient Output Low-level Output Voltage High-level Output Voltage Rise Time Fall Time Remote Control Input Voltage at Output ON Input Voltage at Output OFF Hysteresis Width Overcurrent Latch Overcurrent Threshold Voltage Input Bias Current Delay to Output Overvoltage Latch Overvoltage Threshold Voltage Input Bias Current OVL Reset Voltage Delay to Output
VTH (L) VTH (H)
DT/T
VOL VOH tr tf VIN (ON) VIN (OFF) VH VTH (OC) IB (OC) td (OC) VTH (OV) IB (OV) VR (OV) td (OV)
0.5
V V ns ns
2.8 2.6 0.3 230
V V V mV
A
ns 2.8 4 V
A
V ns
Remark Values in parentheses ( ) represent reference values.
Data Sheet G14309EJ1V0DS00
5
PC1909
TYPICAL CHARACTERISTICS CURVES (UNLESS OTHERWISE SPECIFIED, TA = 25C, VCC = 10 V, REFERENCE VALUES)
PT vs. TA 1.2
PC1909CX
Under-Voltage Lockout Circuit 15
PT - Total Power Dissipation - W
1.0 125 C/W 0.8
PC1909GS
12.5
VOUT1 - Output voltage - V
10
0.6 180 C/W 0.4
7.5
5
0.2
2.5
VCC (H to L)
VH
VCC (L to H)
0
25 50 75 100 125 TA - Ambient Temperature - C ICC vs. VCC
150
0
2.5
5 7.5 10 12.5 VCC - Supply Voltage - V
15
ICC vs. VCC (During OVL Operation) 18 16
ICC - Circuit Current - mA
18 16
ICC - Circuit Current - mA
14 12 10
14 12 10
VH
VH
0.8 0.4
ICC (S
B)
0.8 0.4
ICC (
SB)
fOSC = 200 kHz Without load 5 10 15 20 VCC - Supply Voltage - V ICC(SB) vs. TA 25
fOSC = 200 kHz 5 10 15 20 VCC - Supply Voltage - V VOUT1 vs. VIN 25
0
0
250
20
ICC(SB) - Standby Current - A
200
VOUT1 - Output Voltage - V
15
150
10
100
5 VIN (OFF) VIN (ON)
50
0 -25
0 25 50 75 TA - Ambient Temperature - C
100
0
1 2 3 4 5 VIN - Remote Control Voltage - V
6
6
Data Sheet G14309EJ1V0DS00
PC1909
VREF vs. TA
30 1000 500 fosc vs. RT, CT
VREF - Reference Voltage Deviation - mV
20
10
fosc - Oscillation Frequency - kHz
CT = 220 pF 100 50 CT = 1000 pF CT = 470 pF
0 -10 -20 -30 -25
0 25 50 75 TA - Ambient Temperature - C fosc vs. TA
100
10
50 RT - Timing Resistance - k VOH, VOL vs. TA
100
220 fosc - Oscillation Frequency - kHz 215 210 205 200 195 190 185 180 175 -25 0 25 50 75 TA - Ambient Temperature - C tf, tr vs. TA (OUT1) 100 fOSC = 555 kHz tr - OUT1 Output Rise Time - ns tr - OUT1 Output Fall Time - ns 80 tr 60 tf 40 100
VOH - High-Level Output Voltage - V VOL - Low-Level Output Voltage - V
225
VCC -1 VCC - 1.5 VCC -2
1.53
1.49
1.45 -25
0 25 50 75 TA - Ambient Temperature - C tf, tr vs. TA (OUT2)
100
100 fOSC = 555 kHz tr - OUT2 Output Rise Time - ns tr - OUT2 Output Fall Time - ns 80 tr
60
40
tf
20
20
0 -25
0 25 50 75 TA - Ambient Temperature - C
100
0 -25
0 25 50 75 TA - Ambient Temperature - C
100
Data Sheet G14309EJ1V0DS00
7
PC1909
Duty vs. TA 45 44 43
Duty-ON Duty - %
42 41 40 39 38 37 36 35 -25 0 25 50 75 TA - Ambient Temperature - C 100
8
Data Sheet G14309EJ1V0DS00
PC1909
TIMING CHART
Oscillation waveform CT Oscillation waveform CT'
Feedback input FB
Vd tqc OUT1 output waveform tqd
OUT2 output waveform
(1) Oscillation waveform (CT) This waveform is determined by the external capacitor connected to the CT pin (pin 16) and the external resistor connected to the RT pin (pin 15). It is usually a 1.5-V to 3.5-V triangle waveform (the rise and fall times are the same). (2) Output waveform (OUT1) Whichever is the lower of the DTC1 pin (pin 13) and FB pin (pin 12) voltages is compared with the triangle wave of the CT pin (pin 16). The OUT1 pin (pin 11) is high level while the triangle wave is low. (3) Output waveform (OUT2) Whichever is the higher of the DTC2 pin (pin 5) and FB pin (pin 12) voltages is compared with the level-shifted triangle wave (CT'). The OUT2 pin (pin 6) is high level while the level-shifted triangle wave is high. (4) Triangle wave level shift The triangle wave that controls OUT2 is the original triangle wave of the CT pin (pin 16) shifted to a lower potential via the level shift circuit (OLS). The amount of shift (Vd) can be adjusted using the resistor (RCT2) connected between the CT2 pin (pin 2) and the VREF pin. The relationship between the shift amount (Vd) and the resistance value (k) of the resistor RCT2 connected to the CT2 pin (pin 2) is as follows.
Vd = 4.3 x 2 [V] RCT2[k] + 10
(5) Dead-time (tqc, tqd) adjustment The dead time between the fall of OUT1 and the rise of OUT2 (tqc) and the dead time between the fall of OUT2 and the rise of OUT1 (tqd) is determined by the oscillation frequency and the amount of level shift of the triangle wave. Although usually tqc = tqd, if setting these independently, connect a suitable resistor between the CT pin and the VREF pin, as well as between the CT pin and GND, and adjust the dead time by making the oscillation waveform asymmetrical.
Data Sheet G14309EJ1V0DS00
9
PC1909
PACKAGE DRAWINGS
16 PIN PLASTIC DIP (300 mil)
16 9
1 A
8
K P L
I J
G
H
F C D N
M
B
M
R
NOTES 1) Each lead centerline is located within 0.25 mm (0.01 inch) of its true position (T.P.) at maximum material condition. 2) Item "K" to center of leads when formed parallel.
ITEM A B C D F G H I J K L M N P R
MILLIMETERS 20.32 MAX. 1.27 MAX. 2.54 (T.P.) 0.500.10 1.1 MIN. 3.50.3 0.51 MIN. 4.31 MAX. 5.08 MAX. 7.62 (T.P.) 6.5 0.25 +0.10 -0.05 0.25 1.1 MIN. 015
INCHES 0.800 MAX. 0.050 MAX. 0.100 (T.P.) +0.004 0.020 -0.005 0.043 MIN. 0.1380.012 0.020 MIN. 0.170 MAX. 0.200 MAX. 0.300 (T.P.) 0.256 0.010 +0.004 -0.003 0.01 0.043 MIN. 015 P16C-100-300B-1
10
Data Sheet G14309EJ1V0DS00
PC1909
16 PIN PLASTIC SOP (300 mil)
16 9 detail of lead end
P
1 A
8
F G S B N C D E M
M
H I J
L K
S
NOTE Each lead centerline is located within 0.12 mm of its true position (T.P.) at maximum material condition.
ITEM A B C D E F G H I J K L M N P
MILLIMETERS 10.20.2 0.78 MAX. 1.27 (T.P.) 0.42 +0.08 -0.07 0.10.1 1.650.15 1.55 7.70.3 5.60.2 1.10.2 0.22 +0.08 -0.07 0.60.2 0.12 0.10 +7 3 -3 P16GM-50-300B-5
Data Sheet G14309EJ1V0DS00
11
PC1909
RECOMMENDED SOLDERING CONDITIONS
The PC1909 should be soldered and mounted under the following recommended conditions. For the details of the recommended soldering conditions, refer to the document Semiconductor Device Mounting Technology Manual (C10535E). For soldering methods and conditions other than those recommended below, contact your NEC sales representative. Insertion Type
PC1909CX: 16-pin plastic DIP (300 mils)
Soldering Method Wave soldering (pins only) Partial heating Soldering Conditions Solder bath temperature: 260C Max., Time: 10 seconds max. Pin temperature: 300C max., Time: 3 seconds max. (per pin)
Caution Apply wave soldering only to the pins and be careful not to bring solder into direct contact with the package. Surface Mounting Type
PC1909GS: 16-pin plastic SOP (300 mils)
Recommended Condition symbol IR35-00-2
Soldering Method Infrared reflow
Soldering Conditions Package peak temperature: 235C, Time: 30 seconds max. (at 210C or higher), Count: Twice or less Package peak temperature: 215C, Time: 40 seconds max. (at 200C or higher), Count: Twice or less Soldering bath temperature: 260C or less, Time: 10 seconds max., Count: Once, Preheating temperature: 120C MAX. (package surface temperature)
VPS
VP15-00-2
Wave soldering
WS60-00-1
Caution Do not use different soldering methods together.
12
Data Sheet G14309EJ1V0DS00
PC1909
[MEMO]
Data Sheet G14309EJ1V0DS00
13
PC1909
[MEMO]
14
Data Sheet G14309EJ1V0DS00
PC1909
[MEMO]
Data Sheet G14309EJ1V0DS00
15
PC1909
* The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. * No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. * NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. * Descriptions of circuits, software, and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software, and information in the design of the customer's equipment shall be done under the full responsibility of the customer. NEC Corporation assumes no responsibility for any losses incurred by the customer or third parties arising from the use of these circuits, software, and information. * While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features. * NEC devices are classified into the following three quality grades: "Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a customer designated "quality assurance program" for a specific application. The recommended applications of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application. Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Specific: Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance.
M7 98. 8

▲Up To Search▲

Price & Availability of UPC1909

	To Download UPC1909 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .