Right-click on the line containing .SUBCKT TL494 ... and select .
The used heavily in switch-mode power supplies (SMPS), DC-DC converters, and inverter designs. Simulating this versatile controller in Analog Devices LTspice allows you to test feedback loops, adjust dead-time control, and verify circuit stability before building physical hardware.
Move this file into C:\Users\[YourUsername]\Documents\LTspiceXVII\lib\sym\PowerProducts\ (or the corresponding directory for LTspice 17/24). tl494 ltspice
Simulating the legacy inside Analog Devices LTspice is a highly effective way to prototype Switch Mode Power Supplies (SMPS). However, it comes with a major hurdle: Texas Instruments does not provide an official SPICE model for this legacy IC.
: Open the .sub or .lib file directly in LTspice. Right-click on the line containing
13 = OUT1 14 = OUT2
Place both tl494.asy and tl494.sub into the exact same folder as your current project file ( .asc ). Open your schematic in LTspice. However, it comes with a major hurdle: Texas
+----\/----+ Error Amp 1+ | 1 16 | Error Amp 2+ Error Amp 1- | 2 15 | Error Amp 2- Feedback | 3 14 | REF (5V) Dead-Time Control | 4 13 | Output Control CT | 5 12 | VCC RT | 6 11 | C1 (Collector 1) GND | 7 10 | E1 (Emitter 1) C2 (Coll. 2) | 8 9 | E2 (Emitter 2) +----------+
Instructions on how to perform a to test your loop stability.
Tie Pin 13 to the internal Reference Voltage (Pin 14, VREFcap V sub cap R cap E cap F end-sub