TL494 Overview
The TL494 is used for the control circuit of the PWM switching regulator. The TL494 consists of 5V reference voltage circuit, two error amplifiers, flip flop, an output control circuit, a PWM parator, a dead time parator and an oscillator. This device can be operated in the switching frequency of 1 KHz to 300 KHz.
TL494 Key Features
- Internal regulator provides a stable 5V reference supply trimmed to 5%
- Unmitted output TR for 200mA sink or source current
- Output control for push-pull or single-ended operation
- Variable duty cycle by dead time control (pin 4) plete PWM control circuit
- On-chip oscillator with master or slave operation
- Internal circuit prohibits double pulse at either output
