Tl494 — Ltspice 'link'

Use OUT1 only in single-ended mode

Instead of building from scratch, leverage existing work:

The TL494 SPICE models were often originally written for PSpice or older versions of LTspice. As a result, you may encounter compatibility issues, especially with LTspice24. Here are the most frequent problems and how to solve them: tl494 ltspice

.ENDS TL494

Download the TL494.sub or TL494.lib file. Place it in your project folder, or navigate to your LTspice installation directory and save it under \lib\sub\ . Use OUT1 only in single-ended mode Instead of

power_inverter/ltspice/logic/tl494/tl494.sub at master - GitHub

Since the TL494 is a legacy part, most semiconductor manufacturers (Texas Instruments, ON Semiconductor) provide SPICE models on their websites. However, these are often in PSpice format. For LTspice, it is often easier to use a simplified behavioral model or a converted subcircuit. Place it in your project folder, or navigate

Not used in this basic example

Simulating the 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.

PWM comparator: sawtooth (CT) vs COMP voltage