For permanent installation (so the TL494 appears in the component selection menu):

Use this method if you plan to share your project folder with others.

In this article, we have demonstrated how to use LTSpice to simulate and analyze TL494-based power supply circuits. The example circuit, a half-bridge power supply, was simulated and analyzed, and the results were presented. By using LTSpice to simulate and analyze power supply circuits, designers can optimize circuit performance, reduce design time, and improve overall system reliability.

Whether you’re designing a simple LED dimmer, a motor speed controller, or a 360W push-pull converter, TL494 LTspice simulation can save you time, money, and frustration by letting you perfect your design before ever touching a soldering iron.

: C:\Users\[YourUsername]\Documents\LTspiceXVII\lib\sub\

* 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

The visual schematic symbol that maps the pins to the subcircuit netlist. 2. Installing the Model in LTspice

.MODEL SW SW(RON=0.1 ROFF=1Meg VT=0.5 VH=0.1)