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TEXAS INSTRUMENTS TL1451A handbook

1. R4 C1 e e O 500 pF Vref e e a Step Down e 7T C4 Output 33 ka 470 Q 87 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 d TEXAS INSTRUMENTS 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 0 010 0 25 8 A 0 008 0 20 NOM 0 244 6 20 0 228 5 80 0 157 4 00 0 150 3 81 l Moi Plane 0 010 0 25 7 z 0 044 1 12 0 016 0 40 pi Li urang sh A 0 004 0 10 069 1 75 MAX o2 004 0 10 PINS DIM A MAX A MIN 4040047 D 10 96 NOTES A Alllinear 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 TEXAS INSTRUMENTS 22 POST OFFIC
2. 12 2 62 9 2 6 a 1 o T 3 0 0 50 100 150 200 250 CPE Protection Enable Capacitance uF SCP Vref 15 16 17016 Vref Vref e e Short circuit Protection 12 kQ Comparator Protection ERROR AMP 1 Latch ERROR AMP 2 Iw T 1 25 V D m akan Figure 14 d TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 13 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS ERROR AMP MAXIMUM OUTPUT VOLTAGE SWING OPEN LOOP VOLTAGE AMPLIFICATION vs vs FREQUENCY FREQUENCY 90 7 5 gt m 80 TA 25 C NE 2 B a 2 amp E 50 5 65 E Ei 40 E 2 2 30 E 3 2 5 g 5 9 0 1 108 100 8 1M 10 M 100 1k 10 k 100 k 1M2M f Frequency Hz f Frequency Hz Figure 15 Figure 16 GAIN AMPLIFIER IN UNITY GAIN CONFIGURATION vs FREQUENCY G Gain dB c 1k 10 k 100 k 1M 10 M f Frequency Hz Figure 17 d TEXAS
3. C Figure 3 Figure 4 TRIANGLE WAVEFORM SWING VOLTAGE TRIANGLE WAVEFORM PERIOD vs vs TIMING CAPACITANCE TIMING CAPACITANCE 102 Vcc 5 V Rr 5 1kQ TA 25 5 5 S 9 8 101 2 8 o 2 z 2 10 1071 101 102 103 104 105 101 102 103 104 105 CT Timing Capacitance pF CT Timing Capacitance pF Figure 5 Figure 6 d TEXAS INSTRUMENTS 10 POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS REFERENCE OUTPUT VOLTAGE VARIATION vs FREE AIR TEMPERATURE Vo ret Reference Output Voltage Variation mV 25 0 25 50 75 TA Free Air Temperature Figure 7 REFERENCE OUTPUT VOLTAGE vs SUPPLY VOLTAGE 100 Vovret Reference Output Voltage V 0 5 10 15 20 2 30 35 Vcc Supply Voltage V Figure 9 40 AVo ref Reference Output Voltage Variation Dropout Voltage Variation V d TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 11 REFERENCE OUTPUT VOLTAGE VARIATION vs FREE AIR TEMPERATURE 25 0 25 50 75 100 TA Free Air Temperature Figure 8 DROPOUT VOLTAGE VARIATION vs FREE TEMPERATURE 1 1 li ref 1 1 0 9 0 8 0 7 0 6 25 0 25 50
4. INSTRUMENTS 14 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 5 V Cx 47 pF Rref 150 e 470 pF 60 F Cret 470 pF A 4700 pF TA 25 C Sg Phase Shift 50 Right Scale Closed Loop Gain 0 40 Left Scale 10 a 6 pi 8 20 g kl 30 30 a 8 40 5 20 50 60 10 70 80 0 90 100 1k 10 k 100 k 1M f Frequency Hz Vref 39 ka 39 ka Test Circuit Figure 18 YO Ti EXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 15 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 vs FREQUENCY 70 Vec 5V Cx 47 pF Rref 15 Q 470pF 60 Cret 470 pF A 4700 pF TA 25 C m 50 Phase Shift gt Right Scale Gi Closed Loop Gain 6 40 Left Scale 10 TA 8 20 3 30 30 X a 8 40 2 20 50 60 10 70 80 0 90 100 1k 10 k 100 k 1M f Frequency Hz Vref 39 KQ 39 KQ 2 Test Circuit Figure 19 EXAS INSTRUMENTS 16 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TYPICAL CHAR
5. Latched input voltage DTC lo 40 HA Zero duty cycle 2 05 2 25 Input threshold voltage at f 10 kHz DTC V Maximum duty cycle 1 2 1 45 All typical values are at TA 25 error amplifier section TL1451AC PARAMETER TEST CONDITIONS UNIT MIN MAX Input offset voltage Vo FEEDBACK 1 25 V Input offset current Vo FEEDBACK 1 25 V Input bias current Vo FEEDBACK 1 25 V 160 500 nA 1 05 Common mode input voltage range Voc 5 6 V to 40 V to 1 45 on 1 EE S 5 EE eS _ 6 i 0 5 1 6 45 70 Negative output voltage swing Output sink current FEEDBACK VID 0 1V Vo 125V 05 16 Output source current FEEDBACk Vip 0 1 V Vo 1 25 V 5_ 70 All typical values are at TA 25 MHZ V V mA uA output section TL1451AC PARAMETER TEST CONDITIONS UNIT MIN TYPT MAX Collector off state current Vo 50 V LA Output saturation voltage lo 10 V Short circuit output current Vo 6V 90 All typical values are at TA 25 pwm comparator section PARAMETER TEST CONDITIONS Zero duty cycle Input threshold voltage at f 10 kHz FEEDBACK Maxi dut aximum cycle T All typical values are at TA 25 total device PARAMETER TEST CONDITIONS A MIN MAX Standby supply current Off state 1 3 1 8 Average supply current RT 10 kQ 1 7 2 4 All typical values are
6. 75 100 TA Free Air Temperature C Figure 10 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVSO24E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS UNDERVOLTAGE LOCKOUT HYSTERESIS CHARACTERISTICS UNDERVOLTAGE LOCKOUT CHARACTERISTIC 3 5 300 250 Threshold Voltage VTH Left Scale 200 Threshold Voltage VTL Left Scale 150 100 Hysteresis Voltage Right Scale 2 25 50 VcE 7 Output Collector Voltage V Undervoltage Lockout Threshold Voltage V 0 1 2 3 4 5 25 0 25 50 75 100 Vcc Supply Voltage V TA Free Air Temperature C Figure 11 Figure 12 SHORT CIRCUIT PROTECTION CHARACTERISTICS 1 30 1 25 L Short Circuit Protection Latch Reset Supply Voltage Right Scale 1 20 Short Circuit Protection n Comparator Threshold Voltage Left Scale Comparator Threshold Voltage V RS Latch Reset Supply Voltage V 25 0 25 50 75 100 TA Free Air Temperature Figure 13 Undervoltage Lockout Hystersis Voltage d TEXAS INSTRUMENTS 12 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVSO24E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS PROTECTION ENABLE TIME vs PROTECTION ENABLE CAPACITANCE 18 m 15
7. Yo Icc Standby Standby Current mA 0 25 100 0 0 5 1 1 5 2 2 5 3 Dead Time Input Voltage V Figure 24 STANDBY CURRENT 35 4 STANDBY CURRENT vs SUPPLY VOLTAGE 10 20 Vcc Supply Voltage V Figure 25 30 40 MAXIMUM CONTINUOUS POWER DISSIPATION vs vs FREE AIR TEMPERATURE FREE AIR TEMPERATURE 1200 Average Supply Current t 1100 SESCH Vece 6 V Rp 10 ko m 16 Pin N Plastic 010 CT 330 pF 1000 TE 900 Thermal Resistance lt 2 125 C W o z Stand By Current VCC 40 V No Load a 800 6 700 3 5 a 60 z Stand By Current VCC 3 6 V Load 16 1 NS Plastic SO 8 3 500 2 2 400 o 6 Thermal Resistance 2 pei 300 m 250 C W 2 200 E 100 0 25 0 25 50 75 100 25 0 25 50 75 100 TA Free Air Temperature TA Free Air Temperature Figure 26 Figure 27 EXAS INSTRUMENTS 20 POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 APPLICATION INFORMATION Vcc e e 150 Q 220 ka 470 Q Li ji T An e 0 47 HF 50 ko BS 33 ko 330 pF 9 e GS 33ko R1 R3 R2 L c2 Step Up Output 33 kQ 33 ko 5 4 4
8. at Ta 25 d TEXAS INSTRUMENTS POST OFFICE BOX 655303 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 TEST CONDITIONS TA 2820 TA 2820 2 40 Output voltage pin 16 1 MIN and TA MIN and 125 C 2 35 Output voltage change with temperature ra Input voltage regulation Vcc 3 6 V to 40 V 125 C TA MIN Output voltage regulation lo 0 1 mA to 1 TA 125 C These parameters are not production tested typical values are at Ta 25 C unless otherwise indicated undervoltage lockout section TL1451AQ TL1451AM PARAMETER TEST CONDITIONS MIN MIN TYPt MAX MAX Upper threshold voltage VCC Lower threshold voltage VCC Hysteresis Vog Reset threshold voltage Vcc typical values are at TA 25 unless otherwise indicated TEXAS INSTRUMENTS 6 POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 short circuit protection control section TL1451AQ TL1451AM PARAMETER TEST CONDITIONS UNIT MIN MAX Input threshold voltage SCP
9. standard warranty Production processing does not necessarily include EXAS testing of all parameters unless otherwise noted On all other products production INSTRUMENTS processing does not necessarily include testing of all parameters POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 1 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 functional block diagram 2DTC 14 ERROR J IN AMPLIFIER 2 y 13 P 12 2 FEEDBACK or 1 FEEDBACK 3 scp 15 e PWM 1 2 Vret SR Oscillator COMP e Reference de 16 REF 12kQ Voltage 3 ERROR JIN d AMPLIFIER 1 4 1 DTC 6 A 4 OUTPUT e GND COMPONENT COUNT Resistors Capacitors Transistors JFETs d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 absolute maximum ratings over operating free air temperature ranget Supply Voltage VEG sa a Jag EN ia eid xc ne nd aa nd a a a TA a 51 V Amplifier input voltage EE 20 V Collector output voltage Vo le ee w e n a a aa n na aa 49 aaa ken aa nan aa nan 51 V Collector output current jo 21 mA Continuous power total dissipation See Dissip
10. the terms and conditions of sale supplied at the time of order acknowledgement including those pertaining to warranty patent infringement and limitation of liability TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty Specific testing of all parameters of each device is not necessarily performed except those mandated by government requirements CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER S RISK In order to minimize risks associated with the customer s applications adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards Tl assumes no liability for applications assistance or customer product design TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or relati
11. 020 0 51 0 010 0 25 0 055 1 40 0 045 1 14 0 045 1 14 0 035 0 89 0 028 0 71 4 0 045 1 14 0 022 0 54 0 035 0 89 0 050 1 27 4040140 C 11 95 NOTES linear dimensions are in inches millimeters B This drawing is subject to change without notice C This package can be hermetically sealed with a metal lid D The terminals are gold plated E Falls within JEDEC MS 004 d TEXAS INSTRUMENTS 24 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 J R GDIP T 14 LEADS SHOWN TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 MECHANICAL DATA CERAMIC DUAL IN LINE PINS DIM 1 0 065 1 65 0 045 1 14 0 100 2 54 0 070 1 78 A MAX A MIN B MAX 0 020 0 51 MIN 0 023 0 58 0 015 0 38 0 100 2 54 NOTES 0 200 5 08 MAX Seating Plane A SE 0 130 3 30 MIN 0 014 0 36 0 008 0 20 All linear dimensions are in inches millimeters This drawing is subject to change without notice Index point is provided on cap for terminal identification Falls within MIL STD 1835 GDIP1 T14 GDIP1 T16 and GDIP1 T20 A B C This package is hermetically sealed with a ceramic lid using glass frit D E
12. ACTERISTICS CLOSED LOOP GAIN AND PHASE SHIFT TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS CLOSED LOOP GAIN AND PHASE SHIFT vs FREQUENCY 70 BN Cx 47 pF Rref 15 0 e at 60 Cret 470 pF A 4700 pF TA 25 3 s L Phase Shift Closed Loop Gain Right Scale 0 E 6 40 Left Scale 10 5 20 g 62 30 _30 2 8 a 8 40 2 20 50 60 10 70 80 0 90 100 1k 10 k 100 k 1M f Frequency Hz Vref 39 KQ 39 KQ Test Circuit Figure 20 YO EXAS INSTRUMENTS POST OFFICE BOX 655303 9 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 o 10 20 30 40 50 60 70 80 90 10k 1M f Frequency Hz Closed Loop Gain dB Vref Test Cir
13. E BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 MECHANICAL DATA R PDSO G PLASTIC SMALL OUTLINE PACKAGE 28 PINS SHOWN 0 15 NOM 1 Gage Plane Y seating Pan 2 00 0 05 MIN 1 20 10 PINS 4040065 C 10 95 NOTES A Alllinear 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 d TEXAS INSTRUMENTS 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 NO OF TERMINALS D MAX 17 16 15 14 13 12 0 358 20 9 09 0 458 28 11 63 0 560 4 14 22 0 560 2 14 22 0 858 68 21 8 1 063 27 0 26 27 28 1 0 020 0 51 0 080 2 03 0 010 0 25 i 0 064 1 63 E 0
14. TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 e Complete PWM Power Control Circuitry D DB N NS PW OR J PACKAGE e Completely Synchronized Operation TOP VIEW Undervoltage Lockout Protection cr 16 REF e Wide Supply Voltage Range RT 2 15 SCP Internal Short Circuit Protection ERROR 111 3 14 2IN 1 ERROR e Oscillator Frequency 500 kHz Max AMPLIFIER 1 11N 4 13 2IN f AMPLIFIER 2 Variable Dead Time Provides Control Over FEEDBACK 5 12 2FEEDBACK Total Range 1DTC 6 11 2DTC 10 7 10 20UT Internal Regulator Provides a Stable 2 5 V GND 8 af Voc Reference Supply Available in Q Temp Automotive HighRel Automotive Applications TROP VIEW Configuration Control Print Support Qualification to Automotive Standards description 2IN 2IN NC 2FEEDBACK 2DTC The TL1451A incorporates on a single monolithic boit chip all the functions required in the construction TIN of two pulse width modulation PWM control NC circuits Designed primarily for power supply FEEDBACK control the TL1451A contains an on chip 2 5 V IDTC regulator two error amplifiers an adjustable oscillator two dead time comparators undervol tage lockout circuitry and dual common emitter output transistor circuits The uncommitted output transistors provide common emitter output capability for each controll
15. X 4040062 B 02 95 NOTES A Alllinear 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 d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 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 15 NOM Gage Plane LI _ Seating Plane d MAN 015 210 10 CH 4040064 F 01 97 NOTES A Alllinear 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 153 gom d TEXAS INSTRUMENTS 28 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 IMPORTANT NOTICE Texas Instruments andits subsidiaries TI reserve the rightto make changes to their products or to discontinue any product or service without notice and advise customers to obtain the latest version of relevant information to verify before placing orders that information being relied on is current and complete All products are sold subject to
16. ation Rating Table Operating free air temperature range TA C suffix 20 C to 85 SUND uuu ai dade d RE 40 to 1250 EE 55 to 125 C Storage temperature range Tstg a ke aie mak da dr onde 65 to 1500 Lead temperature 1 6 mm 1 16 inch from case for 10 seconds 260 C 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 TA lt 25 C DERATING FACTOR TA 70 C TA 85 C TA 125 C POWER RATING ABOVE TA 25 C POWER RATING POWER RATING POWER RATING 1088 mW 8 7 mW C 775 mW 6 2 mW C 1000 mW 8 0 500 mW 4 0 mW C 838 mW 6 7 mW C 1375 11 0 1375 mW 11 0 mW C PACKAGE recommended operating conditions UU pmo Operating free air temperature TA d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 3 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 electrical characteristics over rec
17. ative output voltage swing Output sink current FEEDBACK Output source current FEEDBACK T typical values are at TA 25 unless otherwise indicated PARAMETER TEST CONDITIONS Collector off state current VO 50 V Output saturation voltage Short circuit output current Vo 6V 90 typical values are at Ta 25 unless otherwise indicated output section pwm comparator section TL1451AQ TL1451AM PARAMETER TEST CONDITIONS UNIT MIN TYPT MAX Zero duty cycle 2 05 2 25 Input threshold voltage at f 10 kHz FEEDBACK Maxi dut 1 GES V These parameters are not production tested typical values are at TA 25 unless otherwise indicated d TEXAS INSTRUMENTS 8 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 total device All typical values are at Ta 25 C unless otherwise indicated PARAMETER MEASUREMENT INFORMATION Test Input 5 Oscillator Triangle Waveform Error Amplifier Output Dead Time Input Voltage Short Circuit Protection Comparator Input Voltage PWM Comparator Output Voltage RL 4 7 OUT1 e RL 4 7 KQ OUT2 16 15 14 13 12 11 10 9 TL1451A Test Input Figure 1 Test Circuit Dead Time 10096 Output Transistor Co
18. cuit Figure 21 Phase Shift d TEXAS INSTRUMENTS 18 POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 Vom Maximum Output Voltage Swing V Vo ref 0 01 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS OUTPUT SINK CURRENT vs COLLECTOR OUTPUT SATURATION VOLTAGE 120 110 100 90 80 70 60 50 40 Output Sink Current mA MAXIMUM OUTPUT VOLTAGE SWING FREE AIR TEMPERATURE 5 10 15 20 Collector Output Saturation Voltage V Figure 22 vs Vref Vo ref 0 02 Vo ref 0 03 Maximum Output Voltage Swing Right Scale Vo ref 0 04 Vo ref 0 05 100 ko Vvom 1 Maximum Output Vec 3 6 V Voltage Swing 16 1 56816 RL 100 ka VoM 1 1 25 V Vom 1 1 15 V Right Scale Vo ref 0 06 Vo ref 0 07 25 0 25 TA Free Air Temperature C Vom 1 1 35 V Left Scale Vom Maximum Output Voltage Swing V TEST CIRCUIT 50 75 100 Figure 23 d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 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 0 5 Output Transistor On Duty Cycle
19. e 4040083 E 03 99 d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 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 0 260 6 60 0 240 6 10 NA 8 4 e 0 070 1 78 MAX 0 310 7 87 0 035 0 89 MAX 0 020 0 51 MIN 7 87 0 290 7 37 RE 0 125 3 18 MIN BR 0 100 2 54 0 021 0 53 0 015 0 38 0 010 0 25 00 0 010 0 25 NOM p 14 18 PIN ONLY 4040049 C 08 95 NOTES A Alllinear 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 d TEXAS INSTRUMENTS 26 POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVSO24E FEBRUARY 1983 REVISED NOVEMBER 1999 MECHANICAL DATA NS R PDSO G PLASTIC SMALL OUTLINE PACKAGE 14 PINS SHOWN 0 15 NOM a d Gage Plane LLALL Seegen 2 00 0 05 MIN 0 10 Ki PINS DIM A MA
20. er 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 20 C to 85 C The TL1451 AQ is characterized for operation from 40 C to 125 C The TL1451AM is characterized for operation from 55 C to 125 C AVAILABLE OPTIONS PACKAGED DEVICES SMALL SMALL SMALL CHIP CERAMIC OUTLINE OUTLINE al DIP OUTLINE pos CARRIER DIP D DB t NS FK 20 C to 85 14514008 TL1451ACN TL1451ACNS TL1451ACPW 40 C to 125 C TL1451AQD t 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 PRODUCTION DATA information is current as of publication date Copyright 1999 Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments On products compliant to MIL PRF 38535 all parameters are tested
21. llector bk Waveform Protection Enable Terminal Waveform Short Circuit Protection l H Comparator Output JE 3 6 V Power Supply Voltage 2 8 V TYP SV Protection Enable Time tpe 0 051 x 106 x Cpe in seconds Figure 2 TL1451A Timing Diagram d TEXAS INSTRUMENTS POST OFFICE BOX 655303 9 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 TYPICAL CHARACTERISTICS TRIANGLE OSCILLATOR FREQUENCY OSCILLATOR FREQUENCY VARIATION vs vs TIMING RESISTANCE FREE AIR TEMPERATURE 1M 25V Vec 23 6 V TA 25 C gt RT 10 ko EA Cr 330 pF 6 2 fosc 200 kHz 9 Cr 150 pF E 8 100k E d 5 5 D 2 8 1500 pF L 9 5 9 10k 5 S o E 6 1 2 CT 15000 pF 8 a 18 18 4k 10k 40k 100k 400k 1M 25 0 25 50 75 100 RT Timing Resistance Q TA Free Air Temperature
22. mV mwywmgg CHERCHER Latched input voltage SCP typical values are at TA 25 unless otherwise indicated oscillator section PARAMETER TEST CONDITIONS Frequency a B Frequency change with voltage Voc 3 6 V to 40 V Frequency change with temperature These parameters are not production 169166 All typical values are at Ta 25 C unless otherwise indicated dead time control section TL1451AQ TL1451AM PARAMETER TEST CONDITIONS MIN TA 256 Latch mode source current DTC E Ta 25 Input bias current DTC Latched input voltage DTC Ta 125 C Ta MIN Zero duty cycle Input threshold voltage at f 10 kHz DTC These parameters are not production tested All typical values are at TA 25 unless otherwise indicated d TEXAS INSTRUMENTS POST OFFICE BOX 655303 DALLAS TEXAS 75265 7 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 error amplifier section TL1451AQ TL1451AM PARAMETER TEST CONDITIONS UNIT MIN MAX PEE Input offset voltage Input offset current Input bias current Common mode input voltage range o 70 80 142 0 6 1000 voltage amplification TA 1250 CH Unity gain bandwidth Common mode rejection ratio Re H o eo Positive output voltage swing Neg
23. ng to any combination machine or process in which such semiconductor products or services might be or are used Tl s publication of information regarding any third party s products or services does not constitute Tl s approval warranty or endorsement thereof Copyright 9 1999 Texas Instruments Incorporated
24. ommended operating free air temperature range Vcc 6 V f 200 kHz unless otherwise noted reference section TL1451AC PARAMETER TEST CONDITIONS MIN TYPT MAX lo 1mA 2 4 2 5 2 6 Short circuit output current 3 All typical values are at Ta 25 C undervoltage lockout section PARAMETER TEST CONDITIONS Upper threshold voltage Vcc Lower threshold voltage V e ge ToO lO ref 0 1 mA 550 Hysteresis VC C Reset threshold voltage Vc C 1 All typical values are at TA 25 short circuit protection control section TL1451AC PARAMETER TEST CONDITIONS UNIT MIN TYPT MAX Input threshold voltage SCP Standby voltage SCP Latched input voltage SCP Comparator threshold voltage FEEDBACK Re a 18 typical values are at TA 25 oscillator section PARAMETER TEST CONDITIONS Standard deviation of frequency CT 330 pF RT 10kQ C Frequency change with voltage Vcc 3 6 V to 40 V TA 20 C to 25 Frequency change with temperature TA 25 C to 85 C All typical values are at Ta 25 C d TEXAS INSTRUMENTS 4 POST OFFICE BOX 655303 DALLAS TEXAS 75265 TL1451A DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS SLVS024E FEBRUARY 1983 REVISED NOVEMBER 1999 dead time control section TL1451AC PARAMETER TEST CONDITIONS UNIT MIN TYPT MAX Input bias current DTC LI Jm Latch mode source current DTC TA 25 C 80 145

TEXAS INSTRUMENTS TL1451A handbook

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