TL494AP FCI | Alldatasheet

Document overview

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Technical content

The TL494AP is a fixed frequency, pulse width modulation control circuit designed primarily for SWITCHMODE power supply control/

  • • Complete Pulse Width Modulation Control Circuitry
  • • On– Chip Oscillator with Master or Slave Operation
  • • On– Chip Error Amplifiers
  • • On– Chip 5.0 V Reference
  • • Adjustable Deadtime Control
  • • Uncommitted Output Transistors Rated to 500 mA Source or Sink
  • • Output Control for Push– Pull or Single– Ended Operation
  • • Undervoltage Lockout PIN ASSIGNMEN

ORDERING INFORMATION

TA = - 20° ÷ 85° C LOGIC DIAGRAM Pin 7 = GND Pin 12 = VCC noninv. input inv. input feedback dead time control CT RT gnd collector 1 noninv. input inv. input ref. output output control Vcc collector 2 emitter 2 emitter 1 5 6 13 3 7 12 14 dead time control error amp 1 error amp 2 PWM comparator pulce steering flip flop output control reference regulator oscillator T TL494AP Switchmode Pulse - Width - Modulation Control Circuit

MAXIMUM AND RECOMMENDED OPERATING CONDITIONS Recommended operating conditions Maximum ratings Symbol Parameter Min Max Min Max Unit VCC Supply Voltage 7 40 41 V VI Amplifier Input Voltage -0.3 V CC-2 V CC+0.3 V VО Collector Output Voltage 40 41 V IОС Collector Output Current (Each Transistor) 200 250 m А T Storage Temperature Range -55 125 °C T Operating Free-Air Temperature Range -20 85 °C TL494AP Switchmode Pulse - Width - Modulation Control Circuit

ELECTRICAL CHARACTERISTICS (TA= -25 ÷ +85°C, f =10kHz) Value Symbol Parameter Test Conditions Min Typ Max Temperature, Unit Vref Output voltage I0=1.0mA VCC=15V 4.90 5.0 5.10 -20÷+85 V Uregin Input regulation VСС=7÷ 40V I0=1.0mA - 2 25 25 mV Uregout Output regulation I0=1÷ 10 mA VCC =15 V - 1 15 25 mV ∆Vref Output voltage change with temperature I0=1 mA VCC =15 V - 0.2 1.0 -20÷+85 ISC Short circuit output current Vref=0, tsc< 1 s V CC=15 V 35 50 m А fosc Frequency C=0.01µF, R=12k Ω VCC=15 V V(03)=0.7 V 10 25 kHz σfosc Standard Deviation of Frequency * VCC=15 V V(03)=0.7 V - 3 % σfosc(∆V) Frequency Change with Voltage VCC=7÷40 V V(03)=0.7 V - 0.1 - 25 % σfosc(∆Т) Frequency Change with Temperature C=0.01µF, RT=12 kΩ VCC=15 V V(03)=0.7 V - - 2 % IIB(2T) Input bias current (pin 4) V I=0÷5.25V VCC=15 V V(03)=0.7 V - -2 -10 µA DCmax Maximum duty cycle (each output) VI(04)=0V VCC=15 V V(03)=0.7 V 45 48 50 % VTHD1 Input threshold voltage (pin 4) (Zero Duty Cycle) DCmax=0 VCC=15 V V(03)=0.7 V - 2.8 3.3 V VTHD2 Input threshold voltage (pin 4) (Maximum Duty Cycle) DCmax V CC=15 V V(03)=0.7 V 0 - - -20÷+85 V trc Output voltage rise time (Common-Emitter) VCC=15 V V(03)=2.0 V 100 200 ns tfc Output voltage fall time (Common-Emitter) VCC=15 V V(03)=2.0 V 25 100 ns trf Output voltage rise time (Emitter-Follower) VCC=VC=15 V V(03)=2.0 V 100 200 -20÷+85 ns tff Output voltage fall time (Emitter-Follower) VCC= VC= 15 V V(03)= 2.0 V - 35 100 -20÷+85 ns TL494AP Switchmode Pulse - Width - Modulation Control Circuit

Value Symbol Parameter Test Conditions Min Typ Max Temperature, Unit VTHP Input threshold voltage (pin 3) DCmax=0 VCC=15 V 4.0 4.5 V II Input sink current (pin 3) V CC= 15 V V(03)= 0.7 V 0.3 0.7 mA VIO Input offset voltage V CC= 15 V VO(03)= 2.5 V 2 10 mV IIO Input offset current V CC= 15 V VO(03)= 2.5 V 50 250 nA IIB Input bias current V CC= 15 V VO(03)= 2.5 V -0.1 1 µA VICRL Low Input common mode voltage range VCC= 7÷40 V --0.3 V VICRH High Input common mode voltage range VCC= 7÷40 V Vcc V АVOL Open loop voltage amplification ∆V0=3 V VCC= 15 V VO= 0.5÷ 3.5 V 70 95 dB fb Unity-gain bandwidth V CC= 15 V 350 -20÷+85 kHz CMRR Common mode rejection ratio Vcc=40 V 65 90 25 dB IOL Output sink current (pin 3) V CC= 15 V V0(03)= 0.7 V 0.3 1.5 mA IOH Output source current (pin 3) V CC= 15 V V0(03)= 3.5 V -2 -6.5 mA IC(off) Collector off-state current V CE= VCC= 40 V 2 100 µA IЕ(off) Emitter off-state current V CС= VC= 40 V VE= 0 V 0.1 -100 µA VSAT(C) Collector - Emitter saturation voltage (Common-Emitter) VCС= 15 V VE= 0 V V0(03)= 3.0 V IC= 200 mA 1.1 1.5 -20÷+85 V 1.5 2.5 25 VSAT(Е) Collector - Emitter saturation voltage (Emitter-follower) VCС=VC= 15 V IE= - 200 mA V0(03)= 3.0 V 2.9 -20÷+85 V IOCH Output control input current V CС= 15 V V0(03)= 0.7 V 0.2 3.5 mA ICC15 Standby Supply Current at V CC 15V VCС= 15 V 5.5 10 mA ICC40 Standby Supply Current at VCC 40V VCС= 40 V 7.5 15 mA ICCA Average Supply Current V CС= 15 V V0(03)= 0.7 V V0(04)= 2.0 V 7.0 17 -20÷+85 mA TL494AP Switchmode Pulse - Width - Modulation Control Circuit

  • - Standard deviation is a measure of the statistical distribution about the mean as derived from the formula )XXn( N TL494AP Switchmode Pulse - Width - Modulation Control Circuit 15 16 01 02 12 05 10 09 08 07 01 02 03 07080911 15 16 17 18 19 20 Bonding diagram KGM494AP Y 05 06 1112131415 Pads location of KGM494AP

Die size Хr=1.9 mm, Уr=1.8 mm (pad size measured in “passivation” layer) Coordinates of pads Coordinates left bottom, mm pad size, mm No of pad (in layer “passivation”) X Y 01 0,138 0,510 0,100×0,100 02 0,138 0,324 0,100×0,100 03 0,138 0,138 0,100×0,100 04 0,324 0,138 0,100×0,100 05 0,793 0,138 0,100×0,100 06 1,061 0,154 0,100×0,100 07 1,682 0,223 0,100×0,100 08 1,661 0,416 0,100×0,100 09 1,661 0,812 0,100×0,100 10 1,661 0,994 0,100×0,100 11 1,661 1,562 0,100×0,100 12 1,158 1,562 0,100×0,100 13 0,982 1,562 0,100×0,100 14 0,799 1,562 0,100×0,100 15 0,158 1,542 0,100×0,100 16 0,158 1,356 0,100×0,100 17* 0,138 1,182 0,070×0,070 18* 0,138 1,020 0,070×0,070 19* 0,138 0,858 0,070×0,070 20* 0,138 0,696 0,070×0,070 * - not bonding TL494AP Switchmode Pulse - Width - Modulation Control Circuit

Y 05 06 1112131415 Pads location of KGM494AP