Tl494 Ltspice File

Create a schematic (or netlist) named TL494_buck.asc :

: If your output transistors are "shooting through" (both on at once), increase the voltage at Pin 4 slightly to force a wider dead-time. Visualization of PWM Generation The TL494 works by comparing a sawtooth wave (generated at CTcap C sub cap T ) against a control voltage. tl494 ltspice

The is a widely used PWM controller, but it is not natively included in LTspice . To use it, you must download a third-party subcircuit model ( ) and its corresponding symbol file ( Key Performance & Simulation Issues Create a schematic (or netlist) named TL494_buck

Simulation tips:

Some engineers use the LTC3892, a modern controller from ADI. However, its behavioral model does not match the TL494’s discrete logic, leading to inaccurate dead-time and error amplifier responses. To use it, you must download a third-party

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.