TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 CT RT ERROR 1IN + AMPLIFIER 1 1IN - 1FEEDBACK 1DTC 1OUT GND 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 REF SCP 2IN + ERROR 2IN - AMPLIFIER 2 2FEEDBACK 2DTC 2OUT VCC NC REF 3 2 1 20 19 description 1IN+ 4 18 2IN+ 1IN- 5 17 2IN- NC 6 16 NC 1FEEDBACK 7 15 2FEEDBACK IDTC 8 2OUT V CC 10 11 12 13 GND 14 2DTC 9 1OUT The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A 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. SCP FK PACKAGE (TOP VIEW) CT D D, DB, N, NS, PW, OR J PACKAGE (TOP VIEW) NC D Complete PWM Power Control Circuitry Completely Synchronized Operation Internal Undervoltage Lockout Protection Wide Supply Voltage Range Internal Short-Circuit Protection Oscillator Frequency . . . 500 kHz Max Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 2.5-V Reference Supply Available in Q-Temp Automotive HighRel Automotive Applications Configuration Control / Print Support Qualification to Automotive Standards RT D D D D D D D The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low VCC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational. The TL1451AC is characterized for operation from - 20C to 85C. The TL1451AQ is characterized for operation from - 40C to 125C. The TL1451AM is characterized for operation from - 55C to 125C. AVAILABLE OPTIONS PACKAGED DEVICES TA SMALL OUTLINE (D) SMALL OUTLINE (DB) PLASTIC DIP (N) SMALL OUTLINE (NS) TSSOP (PW) CHIP CARRIER (FK) CERAMIC DIP (J) - 20C to 85C -- TL1451ACDB TL1451ACN TL1451ACNS TL1451ACPW -- -- - 40C to 125C TL1451AQD -- -- -- -- -- -- - 55C to 125C -- -- -- -- -- TL1451AMFK TL1451AMJ The DB and PW packages are only available left-end taped and reeled (add LE suffix, i.e., TL1451ACPWLE). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, 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. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 functional block diagram 2 DTC ERROR AMPLIFIER 2 IN + IN - 2 FEEDBACK 1 FEEDBACK SCP VCC RT 9 2 11 14 13 10 + 12 Oscillator 1/2 Vref 5 15 IN - 4 16 REF UVLO S 3 PWM COMP Reference Voltage 12 k R IN + 2 OUTPUT - 170 k ERROR AMPLIFIER 1 CT 1 R + 7 - 1 OUTPUT PWM COMP 1 DTC 6 8 COMPONENT COUNT Resistors 8 Transistors 105 JFETs 2 65 Capacitors POST OFFICE BOX 655303 18 * DALLAS, TEXAS 75265 GND TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 absolute maximum ratings over operating free-air temperature range Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V Amplifier input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V Collector output voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 V Collector output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 mA Continuous power total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 20C to 85C Q suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 40C to 125C M suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATING TABLE PACKAGE TA 25C POWER RATING DERATING FACTOR ABOVE TA = 25C TA = 70C POWER RATING TA = 85C POWER RATING TA = 125C POWER RATING D 1088 mW 8.7 mW/C 696 mW 566 mW 218 mW DB 775 mW 6.2 mW/C 496 mW 403 mW -- N 1000 mW 8.0 mW/C 640 mW 520 mW -- NS 500 mW 4.0 mW/C 320 mW 260 mW -- PW 838 mW 6.7 mW/C 536 mW 436 mW 168 mW FK 1375 mW 11.0 mW/C 880 mW 715 mW 275 mW J 1375 mW 11.0 mW/C 880 mW 715 mW 275 mW recommended operating conditions Supply voltage, VCC Amplifier input voltage, VI MIN MAX 3.6 50 UNIT V 1.05 1.45 V Collector output voltage, VO 50 V Collector output current, IO 20 mA Current into feedback terminal 45 A Feedback resistor, RF 100 Timing capacitor, CT 150 15000 pF Timing resistor, RT 5.1 100 k 1 500 kHz Oscillator frequency Operating free-air temperature, TA POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 k C suffix - 20 85 Q suffix - 40 125 M suffix - 55 125 C 3 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) reference section TL1451AC PARAMETER TEST CONDITIONS Output voltage (pin 16) IO = 1 mA TA = -20C to 25C Output voltage change with temperature Input voltage regulation Output voltage regulation Short-circuit output current All typical values are at TA = 25C. TYP MIN 2.4 MAX UNIT 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 3 V undervoltage lockout section TL1451AC PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Upper threshold voltage (VCC) 2.72 Lower threshold voltage (VCC) 2.6 V 80 120 mV 1.5 1.9 V TL1451AC MIN TYP MAX UNIT IO(ref) 0 1 mA, mA O( f) = 0.1 Hysteresis (VCC) TA = 25C Reset threshold voltage (VCC) All typical values are at TA = 25C. V short-circuit protection control section PARAMETER TEST CONDITIONS Input threshold voltage (SCP) Standby voltage (SCP) TA = 25C No pullup Latched input voltage (SCP) No pullup Input (source) current VI = 0.7 V, TA = 25C 0.65 0.7 0.75 V 140 185 230 mV 60 120 mV -10 -15 -20 A Comparator threshold voltage (FEEDBACK) All typical values are at TA = 25C. 1.18 V oscillator section PARAMETER TEST CONDITIONS TL1451C TYP MAX Frequency CT = 330 pF, Standard deviation of frequency CT = 330 pF, Frequency change with voltage VCC = 3.6 V to 40 V TA = -20C to 25C - 0.4% 2% TA = 25C to 85C - 0.2% 2% Frequency change with temperature All typical values are at TA = 25C. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 RT = 10 k RT = 10 k MIN 200 UNIT kHz 10% 1% TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 dead-time control section PARAMETER TEST CONDITIONS TL1451AC MIN TYP MAX Input bias current (DTC) 1 Latch mode (source) current (DTC) TA = 25C IO = 40 A Latched input voltage (DTC) - 80 Input threshold voltage at f = 10 kHz (DTC) V 2.05 Maximum duty cycle 1.2 A A -145 2.3 Zero duty cycle UNIT 2.25 1.45 V All typical values are at TA = 25C. error-amplifier section PARAMETER TEST CONDITIONS Input offset voltage Input offset current VO (FEEDBACK) = 1.25 V VO (FEEDBACK) = 1.25 V Input bias current VO (FEEDBACK) = 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 TL1451AC TYP 160 6 mV nA 500 nA V Unity-gain bandwidth Common-mode rejection ratio 60 80 dB 1.5 MHz 80 dB Vref - 0.1 V Negative output voltage swing 1 Output (sink) current (FEEDBACK) VID = - 0.1 V, VID = 0.1 V, Output (source) current (FEEDBACK) All typical values are at TA = 25C. VO = 1.25 V VO = 1.25 V UNIT 100 1.05 to 1.45 70 Positive output voltage swing MAX V 0.5 1.6 mA - 45 -70 A output section PARAMETER TEST CONDITIONS Collector off-state current Output saturation voltage Short-circuit output current All typical values are at TA = 25C. TL1451AC TYP MAX MIN VO = 50 V IO = 10 mA 1.2 10 VO = 6 V 90 2 UNIT A V mA pwm comparator section PARAMETER TEST CONDITIONS Input threshold voltage at f = 10 kHz (FEEDBACK) TL1451AC TYP MAX MIN Zero duty cycle Maximum duty cycle 2.05 1.2 2.25 1.45 UNIT V All typical values are at TA = 25C. total device PARAMETER TEST CONDITIONS Standby supply current Average supply current All typical values are at TA = 25C. POST OFFICE BOX 655303 TL1451AC TYP MAX MIN UNIT Off-state 1.3 1.8 mA RT = 10 k 1.7 2.4 mA * DALLAS, TEXAS 75265 5 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 electrical characteristics over recommended operating free-air temperature range, VCC = 6 V, f = 200 kHz (unless otherwise noted) reference section TL1451AQ, TL1451AM PARAMETER Output voltage (pin 16) TEST CONDITIONS MIN TYP MAX 2.40 2.50 2.60 2.35 2.46 2.65 - 0.63% *4% TA = 25C TA = 125C 2.0 12.5 0.7 15 TA = MIN TA = 25C 0.3 30 1.0 7.5 TA = 125C TA = MIN 0.3 14 0.3 20 10 30 TA = 25C TA = MIN and 125C IO = 1 mA Output voltage change with temperature Input voltage regulation Output voltage regulation VCC = 3.6 V to 40 V IO = 0.1 mA to 1 mA Short-circuit output current VO = 0 *These parameters are not production tested. All typical values are at TA = 25C unless otherwise indicated. 3 UNIT V mV mV mA undervoltage lockout section TL1451AQ, TL1451AM PARAMETER TEST CONDITIONS Upper threshold voltage (VCC) Lower threshold voltage (VCC) Reset threshold voltage (VCC) 2.72 TA = MIN TA = 25C 3.15 TA = 125C TA = MIN 1.65 POST OFFICE BOX 655303 1.70 UNIT V V 3.09 80 120 10 50 10 60 1.50 TA = 125C 0.95 TA = MIN 1.50 * DALLAS, TEXAS 75265 MAX 2.60 TA = MIN TA = 25C All typical values are at TA = 25C unless otherwise indicated. 6 TYP TA = 25C TA = 125C TA = 25C TA = 125C Hysteresis (VCC) MIN mV V TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 short-circuit protection control section PARAMETER TEST CONDITIONS Input threshold voltage (SCP) TA = 25C TA = 125C 650 700 750 400 478 550 TA = MIN 800 880 950 140 185 230 TA = 25C TA = 125C 60 120 70 120 TA = MIN 60 120 Standby voltage (SCP) Latched input voltage (SCP) TL1451AQ, TL1451AM MIN TYP MAX Equivalent timing resistance Comparator threshold voltage (FEEDBACK) All typical values are at TA = 25C unless otherwise indicated. UNIT mV mV mV 170 k 1.18 V oscillator section PARAMETER TEST CONDITIONS TL1451AQ, TL1451AM MIN TYP MAX TA = 25C TA = 125C 200 TA = MIN RT = 10 k 193 CT = 330 pF, TA = 25C TA = 125C 1% VCC = 3.6 V to 40 V TA = MIN 3% Frequency CT = 330 pF, F RT = 10 k Standard deviation of frequency Frequency change with voltage UNIT kHz 195 2% 1% Frequency change with temperature 1.37% * 10% *These parameters are not production tested. All typical values are at TA = 25C unless otherwise indicated. dead-time control section PARAMETER TEST CONDITIONS TL1451AQ, TL1451AM MIN TYP MAX TA = 25C TA = MIN and 125C Input bias current (DTC) Latch mode (source) current (DTC) 1 3 Input threshold voltage at f = 10 kHz (DTC) A 2.22 2.32 V 2.28 2.40 TA = 25C TA = 125C 2.30 TA = MIN Zero duty cycle Maximum duty cycle A -145 - 80 Latched input voltage (DTC) UNIT 2.05 *1.20 1.45 *2.25 V *These parameters are not production tested. All typical values are at TA = 25C unless otherwise indicated. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 error-amplifier section PARAMETER TEST CONDITIONS Input offset voltage VO (FEEDBACK) = 1.25 V Input offset current VO (FEEDBACK) = 1.25 V Input bias current VO (FEEDBACK) = 1.25 V Common-mode input voltage g range g VCC = 3.6 V to 40 V Open-loop voltage amplification RF = 200 k TL1451AQ, TL1451AM MIN TYP MAX 6 TA = 25C TA = 125C 10 TA = MIN TA = 25C 100 100 TA = 125C TA = MIN 160 500 100 500 TA = MIN 142 700 70 80 70 80 TA = MIN 64 60 Positive output voltage swing 2 dB 80 1.5 MHz 80 dB V Negative output voltage swing 1 VID = 0.1 V, VO = 1.25 V TA = 25C TA = 125C 0.5 1.6 0.4 1.8 TA = MIN TA = 25C 0.3 1.7 - 45 - 70 - 25 - 50 - 15 - 70 TA = 125C TA = MIN nA V TA = 25C TA = 125C Common-mode rejection ratio Output (source) current (FEEDBACK) nA 200 TA = 25C TA = 125C 1.05 to 1.45 VID = - 0.1 V, VO = 1.25 V mV 12 Unity-gain bandwidth Output (sink) current (FEEDBACK) UNIT V mA A All typical values are at TA = 25C unless otherwise indicated. output section PARAMETER TEST CONDITIONS Collector off-state current VO = 50 V TA = 25C Output saturation voltage TA = 125C TA = MIN Short-circuit output current All typical values are at TA = 25C unless otherwise indicated. TL1451AQ, TL1451AM MIN TYP MAX 10 VO = 6 V 1.20 2.0 1.60 2.4 1.36 2.2 90 UNIT A V mA pwm comparator section PARAMETER TEST CONDITIONS Input threshold voltage at f = 10 kHz (FEEDBACK) Zero duty cycle Maximum duty cycle *These parameters are not production tested. All typical values are at TA = 25C unless otherwise indicated. 8 POST OFFICE BOX 655303 TL1451AQ, TL1451AM MIN TYP MAX * DALLAS, TEXAS 75265 2.05 *1.20 1.45 *2.25 UNIT V TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 total device PARAMETER TEST CONDITIONS Standby supply current Average supply current All typical values are at TA = 25C unless otherwise indicated. TL1451AQ, TL1451AM MIN TYP MAX UNIT Off-state 1.3 1.8 mA RT = 10 k 1.7 2.4 mA PARAMETER MEASUREMENT INFORMATION Test Input S1 VCC = 5 V RL CPE 0.47 F 4.7 k OUT1 RL 4.7 k 16 15 14 13 12 11 10 OUT2 9 TL1451A 1 CT 330 pF 2 3 4 5 6 7 8 RT 10 k Test Input Figure 1. Test Circuit Oscillator Triangle Waveform Error Amplifier Output Dead-Time Input Voltage Short-Circuit Protection Comparator Input Voltage PWM Comparator Output Voltage 2.0 V 1.6 V 1.4 V 1.25 V H L Dead Time 100% H Output Transistor Collector Waveform L 0.6 V Protection Enable Terminal Waveform tpe H Short-Circuit Protection Comparator Output Power Supply Voltage 0V L 3.6 V 2.8 V TYP 0V Protection Enable Time, tpe = (0.051 x 106 x Cpe) in seconds Figure 2. TL1451A Timing Diagram POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 9 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS TRIANGLE OSCILLATOR FREQUENCY vs TIMING RESISTANCE OSCILLATOR FREQUENCY VARIATION vs FREE-AIR TEMPERATURE 3 VCC = 5 V TA = 25C f osc - Oscillator Frequency Variation - % afosc ffosc osc - Triangle Oscillator Frequency - Hz 1M CT = 150 pF 100 k CT = 1500 pF 10 k CT = 15000 pF 1k 1k 4k 10 k 40 k 100 k 400 k VCC = 3.6 V RT = 10 k CT = 330 pF fosc = 200 kHz 2 1 0 -1 -2 IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII IIIII -3 -25 1M RT - Timing Resistance - 0 25 50 75 TA - Free-Air Temperature - C Figure 3 Figure 4 TRIANGLE WAVEFORM PERIOD vs TIMING CAPACITANCE TRIANGLE WAVEFORM SWING VOLTAGE vs TIMING CAPACITANCE 102 VCC = 5 V RT = 5.1 k TA = 25C s Triangle Waveform Period - uS Triangle Waveform Swing Voltage - V 2.6 2.4 100 2.2 2 1.8 1.6 1.4 1.2 VCC = 5 V RT = 5.1 k TA = 25C 101 100 1 0.8 101 102 103 104 CT - Timing Capacitance - pF 105 10-1 101 Figure 5 10 102 103 104 CT - Timing Capacitance - pF Figure 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 105 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS REFERENCE OUTPUT VOLTAGE VARIATION vs FREE-AIR TEMPERATURE 30 avref - Reference Output Voltage Variation - mV VO(ref) avref - Reference Output Voltage Variation - mV VO(ref) REFERENCE OUTPUT VOLTAGE VARIATION vs FREE-AIR TEMPERATURE VCC = 3.6 V II(ref) = 1 mA 20 IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII IIIII IIIIIII AA AA AA AA 10 0 -10 - 20 - 30 - 25 75 0 25 50 TA - Free-Air Temperature - C 100 30 VCC = 40 V II(ref) = 1 mA 20 IIIII IIIIII IIIII IIIIII IIIII IIIIII IIIII IIIIII IIIII IIIIII AA AA AA AA 10 0 -10 - 20 - 30 - 25 0 25 50 75 TA - Free-Air Temperature - C Figure 7 Figure 8 DROPOUT VOLTAGE VARIATION vs FREE-TEMPERATURE REFERENCE OUTPUT VOLTAGE vs SUPPLY VOLTAGE 1.1 II(ref) = 1 mA TA = 25C 2.5 1 Dropout Voltage Variation - V VO(ref) Vref - Reference Output Voltage - V 3 AA AA AA 100 2 1.5 1 0.9 0.8 0.7 0.6 0.5 0 0 5 30 10 15 20 25 VCC - Supply Voltage - V 35 40 - 25 Figure 9 0 25 50 75 TA - Free-Air Temperature - C 100 Figure 10 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 11 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS UNDERVOLTAGE LOCKOUT HYSTERESIS CHARACTERISTICS - Output Collector Voltage - V VVCE CE Undervoltage Lockout Threshold Voltage - V TA = 25C TA = -20C TA = 85C AA AA AA UNDERVOLTAGE LOCKOUT CHARACTERISTIC 5 4 3 5V RL 2 7,10 I = IO 8 VDE 1 300 3.5 IO = 10 mA 3.25 Threshold Voltage -VTH (Left Scale) 3 200 Threshold Voltage -VTL (Left Scale) 2.75 150 2.5 100 Hysteresis Voltage (Right Scale) 50 2.25 0 2 0 0 1 2 4 3 5 -25 0 25 50 Figure 11 Figure 12 SHORT-CIRCUIT PROTECTION CHARACTERISTICS Comparator Threshold Voltage - V Short-Circuit Protection Latch Reset Supply Voltage (Right Scale) 2 1.20 1.15 1.10 - 25 2.5 Short-Circuit Protection Comparator Threshold Voltage (Left Scale) 50 75 0 25 TA - Free-Air Temperature - C Figure 13 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1.5 1 100 RS - Latch Reset Supply Voltage - V 3 1.30 1.25 75 TA - Free-Air Temperature - C VCC - Supply Voltage - V 12 250 100 Undervoltage Lockout Hystersis Voltage - mV 6 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS PROTECTION ENABLE TIME vs PROTECTION ENABLE CAPACITANCE 18 tpe t pe - Protection Enable Time - s 15 12 9 6 3 0 0 200 50 100 150 CPE - Protection Enable Capacitance - F SCP Vref 16 15 170 k Short-circuit Protection Comparator 250 12 k CPE ERROR AMP 1 ERROR AMP 2 Vref S R Protection Latch Vref U.V.L.O. + 1.25 V - Figure 14 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 13 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OPEN-LOOP VOLTAGE AMPLIFICATION vs FREQUENCY ERROR AMP MAXIMUM OUTPUT VOLTAGE SWING vs FREQUENCY 2 90 VCC = 5 V TA = 25C Open-Loop Voltage Amplification - dB Error Amp Maximum Output Voltage Swing - V 2.25 1.75 1.5 1.25 1 0.75 0.5 0.25 0 1k 10 k 100 k 1M f - Frequency - Hz VCC = 5 V TA = 25C 80 70 60 50 40 30 20 10 0 100 10 M 1k Figure 15 Figure 16 GAIN (AMPLIFIER IN UNITY-GAIN CONFIGURATION) vs FREQUENCY 10 VCC = 5 V TA = 25C 5 G - Gain - dB 0 -5 -10 -15 -20 1k 10 k 100 k 1M f - Frequency - Hz Figure 17 14 10 k 100 k f - Frequency - Hz POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 10 M 1M 2M TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 Phase Shift (Right Scale) 50 40 47 pF 470 pF 4700 pF 0 Closed-Loop Gain (Left Scale) - 10 - 20 30 - 30 Phase Shift Closed-Loop Gain - dB 60 CX: VCC = 5 V Rref = 150 Cref = 470 pF TA = 25C - 40 - 50 20 - 60 - 70 10 - 80 0 100 1k 10 k 100 k - 90 1M f - Frequency - Hz Vref + - 39 k Cx Rref Cref 39 k Test Circuit Figure 18 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 15 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 CX: Phase Shift (Right Scale) 50 Closed-Loop Gain (Left Scale) 40 47 pF 470 pF 4700 pF 0 - 10 - 20 30 - 30 - 40 - 50 20 - 60 - 70 10 - 80 0 100 1k 10 k 100 k f - Frequency - Hz Vref + - Cx 39 k Rref Cref 39 k Test Circuit Figure 19 16 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 - 90 1M Phase Shift Closed-Loop Gain - dB 60 VCC = 5 V Rref = 15 Cref = 470 pF TA = 25C TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 CX: 50 40 Phase Shift (Right Scale) Closed-Loop Gain (Left Scale) 47 pF 470 pF 4700 pF 0 - 10 - 20 30 - 30 Phase Shift Closed-Loop Gain - dB 60 VCC = 5 V Rref = 15 Cref = 470 pF TA = 25C - 40 - 50 20 - 60 - 70 10 - 80 0 100 1k 10 k 100 k - 90 1M f - Frequency - Hz Vref + - 39 k Cx Rref Cref 39 k Test Circuit Figure 20 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 17 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED-LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 50 0 40 Closed-Loop Gain (Left Scale) Phase Shift (Right Scale) 30 - 10 - 20 - 30 - 40 - 50 20 - 60 - 70 10 - 80 0 100 1k 10 k 100 k f - Frequency - Hz Vref + - 39 k Cref 39 k Test Circuit Figure 21 18 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 - 90 1M Phase Shift Closed-Loop Gain - dB 60 VCC = 5 V Cref = 470 pF TA = 25C TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OUTPUT SINK CURRENT vs COLLECTOR OUTPUT SATURATION VOLTAGE 120 TA = - 20C 110 TA = 25C Output Sink Current - mA 100 90 TA = 85C 80 70 60 50 40 30 20 VCC = 3.6 V 10 0 0 15 5 10 Collector Output Saturation Voltage - V 20 Figure 22 VO(ref) - 0.01 1 VO(ref) - 0.02 0.9 VO(ref) - 0.03 Maximum Output Voltage Swing (Right Scale) 0.8 VO(ref) - 0.04 VO(ref) - 0.05 0.7 Maximum Output Voltage Swing (Right Scale) 0.6 VO(ref) - 0.06 VO(ref) - 0.07 - 25 0.5 Vref VOM - Maximum Output Voltage Swing - V VOM - Maximum Output Voltage Swing - V MAXIMUM OUTPUT VOLTAGE SWING vs FREE-AIR TEMPERATURE 33 k + 33 k - RL 100 k Vvom - 1 VCC = 3.6 V RL = 100 k VOM+1 = 1.25 V VOM -1 = 1.15 V (Right Scale) VOM -1 = 1.35 V (Left Scale) TEST CIRCUIT 0 25 50 75 TA - Free-Air Temperature - C 100 Figure 23 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 19 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OUTPUT TRANSISTOR ON DUTY CYCLE vs DEAD-TIME INPUT VOLTAGE STANDBY CURRENT vs SUPPLY VOLTAGE VCC = 3.6 V RT = 10k CT = 330 pF 10 20 IICC CC (Standby) - Standby Current - mA Output Transistor "On" Duty Cycle - % 0 30 40 50 60 70 AA AA 80 90 100 0 0.5 1 1.5 2 2.5 3 3.5 TA = 25C 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 4 30 10 20 VCC - Supply Voltage - V 0 Dead-Time Input Voltage - V Figure 24 40 Figure 25 MAXIMUM CONTINUOUS POWER DISSIPATION vs FREE-AIR TEMPERATURE STANDBY CURRENT vs FREE-AIR TEMPERATURE I CC - Supply Current - mA ICC 2 AA AA 1.75 1.5 Average Supply Current VCC = 6 V, RT = 10 k, CT = 330 pF Stand-By Current, VCC = 40 V, No Load 1.25 1 Stand-By Current, VCC = 3.6 V, No Load 0.75 0.5 0.25 0 -25 0 25 50 75 TA - Free-Air Temperature - C 100 Maximum Continuous Power Dissipation - mW 1200 1100 16-Pin N Plastic Dip 1000 Thermal Resistance 125C/W 900 800 700 600 16-Pin NS Plastic SO 500 400 200 100 0 -25 Figure 26 20 Thermal Resistance 250C/W 300 0 75 25 50 TA - Free-Air Temperature Figure 27 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 100 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 APPLICATION INFORMATION VCC 220 k 0.47 F 150 470 50 k 33 k L1 330 pF R1 R2 33 k R3 33 k 33 k Step-Up C2 Output R4 C1 500 pF Vref 16 15 14 13 12 11 10 9 TL1451A 1 2 3 4 5 6 7 8 470 470 R5 C5 220 500 pF 1 F L2 R6 470 33 k Step-Down C4 Output R7 33 k NOTE A: Values for R1 through R7, C1 through C4, and L1 and L2 depend upon individual application. Figure 28. High-Speed Dual Switching Regulator POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 21 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 14 0.010 (0,25) M 8 0.008 (0,20) NOM 0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81) Gage Plane 0.010 (0,25) 1 7 0- 8 A 0.044 (1,12) 0.016 (0,40) Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) PINS ** 0.004 (0,10) 8 14 16 A MAX 0.197 (5,00) 0.344 (8,75) 0.394 (10,00) A MIN 0.189 (4,80) 0.337 (8,55) 0.386 (9,80) DIM 4040047 / D 10/96 NOTES: A. B. C. D. 22 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15). Falls within JEDEC MS-012 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,15 NOM 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0- 8 1,03 0,63 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 8 14 16 20 24 28 30 38 A MAX 3,30 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 2,70 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 / C 10/95 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 23 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER 28 TERMINALS SHOWN 18 17 16 15 14 13 NO. OF TERMINALS ** 12 19 11 20 10 A B MIN MAX MIN MAX 20 0.342 (8,69) 0.358 (9,09) 0.307 (7,80) 0.358 (9,09) 28 0.442 (11,23) 0.458 (11,63) 0.406 (10,31) 0.458 (11,63) 21 9 22 8 44 0.640 (16,26) 0.660 (16,76) 0.495 (12,58) 0.560 (14,22) 23 7 52 0.740 (18,78) 0.761 (19,32) 0.495 (12,58) 0.560 (14,22) 24 6 68 25 5 0.938 (23,83) 0.962 (24,43) 0.850 (21,6) 0.858 (21,8) 84 1.141 (28,99) 1.165 (29,59) 1.047 (26,6) 1.063 (27,0) B SQ A SQ 26 27 28 1 2 3 4 0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25) 0.020 (0,51) 0.010 (0,25) 0.055 (1,40) 0.045 (1,14) 0.045 (1,14) 0.035 (0,89) 0.045 (1,14) 0.035 (0,89) 0.028 (0,71) 0.022 (0,54) 0.050 (1,27) 4040140 / C 11/95 NOTES: A. B. C. D. E. 24 All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a metal lid. The terminals are gold-plated. Falls within JEDEC MS-004 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA J (R-GDIP-T**) CERAMIC DUAL-IN-LINE 14 LEADS SHOWN PINS ** 14 16 20 A MAX 0.310 (7,87) 0.310 (7,87) 0.310 (7,87) A MIN 0.290 (7,37) 0.290 (7,37) 0.290 (7,37) B MAX 0.785 (19,94) 0.785 (19,94) 0.975 (24,77) B MIN 0.755 (19,18) 0.755 (19,18) 0.930 (23,62) C MAX 0.300 (7,62) 0.300 (7,62) 0.300 (7,62) C MIN 0.245 (6,22) 0.245 (6,22) 0.245 (6,22) DIM B 8 14 C 1 7 0.065 (1,65) 0.045 (1,14) 0.100 (2,54) 0.070 (1,78) 0.020 (0,51) MIN A 0.200 (5,08) MAX Seating Plane 0.130 (3,30) MIN 0.023 (0,58) 0.015 (0,38) 0-15 0.014 (0,36) 0.008 (0,20) 0.100 (2,54) 4040083/E 03/99 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package is hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification. Falls within MIL STD 1835 GDIP1-T14, GDIP1-T16, and GDIP1-T20 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 25 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 16 PINS 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 than MS-001). 26 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA NS (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 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 0,10 0,05 MIN 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 4040062 / B 02/95 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion, not to exceed 0,15. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 27 TL1451A DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS024E - FEBRUARY 1983 - REVISED NOVEMBER 1999 MECHANICAL DATA PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0- 8 A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. 28 All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. 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