Tl494 Ltspice Guide

Simulating the TL494 in LTspice is a standard task for engineers designing switch-mode power supplies (SMPS). While the TL494 is a legacy PWM controller, its versatility in push-pull, half-bridge, and buck converter topologies keeps it relevant in modern hobbyist and industrial designs.

Amplifier 2 (pins 3,4) -> also to COMP G_EA2 0 6 VALUE 0.001 * (V(3,4)) tl494 ltspice

models into LTspice. Because LTspice is generally compatible with the SPICE standard, many models for similar double-ended controllers like the can be adapted if a direct TL494 model is unavailable. Pro-Tips for TL494 Simulations Label Your Nets Simulating the TL494 in LTspice is a standard

Circuit Description:

Below is a step-by-step walkthrough for option 1 (using a vendor model) and a compact alternative using a behavioral subcircuit for quick tests. Because LTspice is generally compatible with the SPICE

This is educational but lacks error amps, VREF, output stage details.

.SUBCKT TL494 1 2 3 4 5 6 7 8 9 10 11 12 13 14