TL494 IC- Pulse Width Modulation Controller IC

The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits. The error amplifiers exhibit a common-mode voltage range from ?0.3 V to VCC ? 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a saw tooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or single ended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C device is characterized for operation from 0?C to 70?C. 

Features:-

? Complete PWM Power-Control Circuitry 

? Uncommitted Outputs for 200-mA Sink or Source Current 

? Output Control Selects Single-Ended or Push-Pull Operation 

? Internal Circuitry Prohibits Double Pulse at Either Output 

? Variable Dead Time Provides Control Over Total Range 

? Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance 

? Circuit Architecture Allows Easy Synchronization 

Specifications:-

Related Document:-

 TL494 IC Data Sheet