Tl494 Ltspice Hot!

+--------------------------------------------+ | TL494 | | | | [1] 1IN+ (V_FB) VCC [12] <--+--- VDC (+12V) | [2] 1IN- (V_REF) GND [11] <--+--- GND | [3] FEEDBACK C1 [8] ----> Output Switch 1 | [4] DTC (GND) E1 [9] | [5] CT (To C_ext) C2 [11] ----> Output Switch 2 | [6] RT (To R_ext) E2 [10] | [14] REF (5V Out) OUT_CTRL [13] ----> V_REF (Push-Pull) +--------------------------------------------+ Essential Pin Connections for the Simulation: : Connect Pin 12 ( VCC ) to a DC source. Connect Pin 7 ( GND ) to the SPICE ground ( G ). Oscillator Setup : Connect Pin 5 ( CT ) to a capacitor to ground. Connect Pin 6 ( RT ) to a resistor to ground.

For frequency‑domain loop design and compensator tuning, use an averaged model: tl494 ltspice

Provides a variable, non-overlapping minimum dead-time to safeguard external switching transistors against cross-conduction. Connect Pin 6 ( RT ) to a resistor to ground

Set via an external resistor ( RTcap R sub cap T ) and capacitor ( CTcap C sub cap T ✅ Summary of TL494 Simulation Setup

: Selects between single-ended (grounded) or push-pull (connected to Vref) output modes. 3. Creating a Test Jig (Example: Buck Converter)

: Look for "unofficial" models on community forums like Groups.io LTspice or GitHub . File Placement : Place TL494.asy in your LTspice/lib/sym/Misc folder. Place TL494.sub in your LTspice/lib/sub folder.

on this pin, it will completely shut down the outputs. Ensure it is connected firmly to ground for standard test runs. ✅ Summary of TL494 Simulation Setup