: Ensure this pin is tied to GND for maximum duty cycle or biased with a voltage to set a specific dead-time, otherwise, the PWM may not start [8, 15]. Wait for Stabilization
. 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
The device features two independent error amplifiers. : Ensure this pin is tied to GND
command (press 'S' to add a SPICE directive) to point to your library file. Common Simulation Pitfalls the PWM may not start [8
* TL494 Subcircuit for LTspice * Pin order: 1IN+ 1IN- 2IN+ 2IN- FB COMP CT RT GND C1 C2 VCC OUT1 OUT2 * Simplified functional model: oscillator, PWM comparator, error amps, outputs