Tl494 — Ltspice

TL494 PWM controller

To use the in LTspice, you must use a third-party subcircuit because there is no native, official model provided by Linear Technology (Analog Devices) [2]. 1. The TL494 Subcircuit Code

Next steps:

Try simulating a TL494-based boost converter with slope compensation, or add a second error amplifier to implement overcurrent protection. Once the waveforms look clean, build a prototype, and you’ll find that the real circuit behaves remarkably close to your LTspice simulation. tl494 ltspice

* Example: buck with TL494 (sketch) V1 VIN 0 24 XU1 VIN 0 FB COMP RT CT DTC SS OUTC OUTE ILIM tl494 M1 SW 1 0 0 nmos_model Rds=0.05 D1 SW VIN D1model L1 SW OUT 33u Cout OUT 0 220u ESR=0.05 Rload OUT 0 12 * Feedback divider to FB (set for 12V out) Rfb_top OUT Vfb 10k Rfb_bot Vfb 0 10k * Sense resistor to ILIM Rsen SW ILIM 0.1 .tran 0 100m .include tl494.subckt TL494 PWM controller To use the in LTspice,

LTSpice is the ideal platform because it handles transistor-level nonlinearities and switching transients better than many paid tools—and it’s free. Once the waveforms look clean, build a prototype,