Tl494 | Ltspice

To test the model, it is recommended to set up a simple buck converter topology in LTspice. Connect a resistor RTcap R sub cap T to pin 6 and a capacitor CTcap C sub cap T to pin 5. The frequency is calculated as:

You can find TL494 LTspice subcircuit models ( .subckt ) on specialized electronics forums or via online simulations. tl494 ltspice

You can verify PWM logic, oscillator frequency, and feedback loops without damaging components. To test the model, it is recommended to

Connect pin 3 (Feedback) to the output of an error amplifier. To test the model