: 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.
. Since an official model is not included in the default LTspice library, simulating this chip requires importing a third-party subcircuit and symbol. 1. Acquiring and Installing the TL494 Model tl494 ltspice
(Note: pin order depends on your specific symbol/subcircuit – always check the .sub file’s .SUBCKT line.) : If your output transistors are "shooting through"
* Output Transistors (Pins 8,9,10,11) * Q1 (Pins 8 Coll, 9 Emit) * Q2 (Pins 10 Coll, 11 Emit) S1 8 9 101 0 SW S2 10 11 101 0 SW Since an official model is not included in