TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 D D D D D D D Complete PWM Power Control Circuitry Completely Synchronized Operation Internal Undervoltage Lockout Protection Wide Supply Voltage Range Oscillator Frequency . . . 500 kHz Max Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 2.5-V Reference Supply N OR NS PACKAGE (T0P VIEW) CT RT ERROR IN+ AMPLIFIER 1 IN- 1 FEEDBACK 1 DEAD-TIME CONTROL 1 OUTPUT GND { 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 REF SCP IN+ ERROR IN- AMPLIFIER 2 2 FEEDBACK 2 DEAD-TIME CONTROL 2 OUTPUT VCC } description The TL1453C incorporates the functions required in the construction of two pulse-width-modulation control circuits on a single monolithic chip. Designed primarily for power supply control, the TL1453C contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits. The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.05 V to 1.45 V. The dead-time control comparator has no offset unless externally altered and may be used to provide 0% to 100% dead time. The on-chip oscillator may be operated by terminating RT (pin 2) and CT (pin 1). During low-VCC conditions, the undervoltage lockout control circuit feature inhibits the output until the internal circuitry is operational. The TL1453C is characterized for operation from -20C to 85C. functional block diagram CT 1 VCC 9 REF 1 IN+ 1 IN- 1 FEEDBACK 2 FEEDBACK 2 IN+ 2 IN- Vref = 2.5 V 16 3 Error Amp.1 Reference Voltage 2.5 V RT 2 Triangle Oscillator 2V 1.4 V PWM Comparator 1 7 1 OUTPUT 4 1 5 12 Error Amp.2 14 10 13 2 OUTPUT 2.5 V 2 2.5 V SCP 15 UVLO = Undervoltage Lockout Protection PWM Comparator 2 UVLO 6 1 DEAD-TIME CONTROL 8 GND 11 2 DEAD-TIME CONTROL Copyright 1990, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V Amplifier input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V Collector output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V Collector output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 mA Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 20C to 85C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C NOTE 1: All voltage values are with respect to network ground terminal. DISSIPATION RATING TABLE PACKAGE TA 25C POWER RATING N 1000 mW 8 mW/C 520 mW NS 725 mW 5.8 mW/C 397 mW DERATING FACTOR ABOVE TA = 25C TA = 85C POWER RATING recommended operating conditions Supply voltage, VCC Amplifier input voltage, VI MIN MAX 3.6 40 UNIT V 1.05 1.45 V Collector output voltage, VO 50 V Collector output current 20 mA Current into feedback terminal 45 A Feedback resistor, RF 100 Timing capacitor, CT 150 15000 Timing resistor, RT 5.1 100 k 1 500 kHz - 20 85 C Oscillator frequency Operating free-air temperature, TA k pF electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) reference section PARAMETER Output voltage (pin 16) TYP MAX 2.4 2.5 2.6 - 0.1% 1% TA = 25C to 85C VCC = 3.6 V to 40 V - 0.2% 1% 2 12.5 mV IO = 0.1 mA to 1 mA VO = 0 1 7.5 mV 10 30 mA IO = 1 mA TA = - 20C to 25C Output voltage change with temperature Input regulation Output regulation Short-circuit output current All typical values are at TA = 25C. 2 MIN TEST CONDITIONS POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 UNIT V TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) (continued) undervoltage lockout section PARAMETER TEST CONDITIONS Upper threshold voltage (pin 9) MIN Lower threshold voltage (pin 9) IOref = 0.1 mA, IOref = 0.1 mA, TA = 25C TA = 25C Hysteresis (pin 9) IOref = 0.1 mA, TA = 25C TYP MAX 2.72 UNIT V 2.6 V 80 120 mV MIN TYP oscillator section PARAMETER TEST CONDITIONS Frequency CT = 330 pF, RT = 10 k Standard deviation of frequency VCC, TA, RT, CT values are constant VCC = 3.6 V to 40 V Frequency change with voltage UNIT kHz 10% 1% TA = -20C to 25C TA = 25C to 85C Frequency change with temperature tem erature MAX 200 - 0.4% 2% - 0.2% 2% TYP MAX dead-time control section PARAMETER TEST CONDITIONS MIN Input bias current (pins 6 and 11) 1 Zero duty cycle Input threshold voltage at f = 10kHz (pins 6 and 11) Maximum duty cycle 2.05 1.2 UNIT A 2.25 V 1.45 error-amplifier section PARAMETER TEST CONDITIONS Input offset voltage Input offset current VO (pins 5 and 12) = 1.25 V VO (pins 5 and 12) = 1.25 V Input bias current VO (pins 5 and 12) = 1.25 V Common-mode input voltage g range g VCC = 3.6 V to 40 V Open-loop voltage amplification RF = 200 k MIN 160 Unity-gain bandwidth 60 Positive output voltage swing MAX UNIT 6 mV 100 nA 500 nA 1.05 to 1.45 70 Common-mode rejection ratio TYP V 80 dB 1.5 MHz 80 dB Vref - 0.1 V Negative output voltage swing 1 V Output (sink) current (pins 5 and 12) VID = - 0.1 V, VO = 1.25 V 0.5 1.6 mA Output (source) current (pins 5 and 12) VID = 0.1 V, VO = 1.25 V - 45 - 70 A output section PARAMETER TEST CONDITIONS MIN TYP VCC = 0, VO = 50 V VO = 50 V Collector off-state off state current Output saturation voltage IO = 10 mA VO = 6 V Short-circuit output current All typical values are at TA = 25C. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 MAX 10 10 1.2 90 2 UNIT A V mA 3 TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) (continued) pwm comparator section PARAMETER TEST CONDITIONS MIN TYP MAX 2.05 2.25 Zero duty cycle Input threshold voltage at f = 10 kHz (pins 5 and 12) Maximum duty cycle Input (sink) current (pins 5 and 12) Input (source) current (pins 5 and 12) 1.2 1.45 UNIT V VI = 1.25 V VI = 1.25 V 0.5 1.6 mA - 45 - 70 A TEST CONDITIONS MIN TYP MAX Off-state 1.3 1.8 mA RT = 10 k 1.7 2.4 mA total device PARAMETER Standby supply current Average supply current All typical values are at TA = 25C. test circuit 1 CT 330 pF 10 k 2 RT 3 4 5 TEST INPUT 6 7 8 CT TL1453C RT REF SCP IN+2 IN+1 IN-1 1 FEEDBACK 1 DEAD-TIME CONTROL IN-2 2 FEEDBACK 16 0.1 F 15 14 13 12 TEST INPUT 2 DEAD-TIME 11 CONTROL 2 OUTPUT 10 OUTPUT 2 1 OUTPUT GND RL VCC 9 VCC RL OUTPUT 1 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 UNIT TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 16 PIN SHOWN PINS ** 14 16 18 20 A MAX 0.775 (19,69) 0.775 (19,69) 0.920 (23.37) 0.975 (24,77) A MIN 0.745 (18,92) 0.745 (18,92) 0.850 (21.59) 0.940 (23,88) DIM A 16 9 0.260 (6,60) 0.240 (6,10) 1 8 0.070 (1,78) MAX 0.035 (0,89) MAX 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.010 (0,25) M 0- 15 0.010 (0,25) NOM 14/18 PIN ONLY 4040049/C 08/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 (20 pin package is shorter then MS-001.) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 TL1453C DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT SLVS039A - FEBRUARY 1990 - REVISED DECEMBER 1990 NS (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PIN SHOWN PINS ** 14 16 20 24 A MAX 10,50 10,50 12,90 15,30 A MIN 9,90 9,90 12,30 14,70 DIM 0,51 0,35 1,27 14 0,25 M 8 0,15 NOM 5,60 5,00 8,20 7,40 Gage Plane 1 7 0,25 0- 10 A 1,05 0,55 Seating Plane 2,00 MAX 0,05 MIN 0,10 4040062 / B 02/95 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. 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