Tl494 Ltspice Site

: Some models require a very small simulation timestep (nanoseconds) to produce a clean ramp signal (

This is educational but lacks error amps, VREF, output stage details. tl494 ltspice

Run the simulation for 5ms.

| Pin | Name | Description | |-----|-----------|---------------------------| | 1 | IN1+ | Error Amp 1 non‑inverting | | 2 | IN1- | Error Amp 1 inverting | | 3 | FEEDBACK | Compensation / PWM input | | 4 | DTC | Dead‑time control | | 5 | CT | Timing capacitor | | 6 | RT | Timing resistor | | 7 | GND | Ground | | 8 | C1 | Output collector 1 | | 9 | E1 | Output emitter 1 | | 10 | E2 | Output emitter 2 | | 11 | C2 | Output collector 2 | | 12 | VCC | Supply (7–40 V) | | 13 | OUT_CTRL | Output mode control | | 14 | REF | 5 V reference output | | 15 | IN2- | Error Amp 2 inverting | | 16 | IN2+ | Error Amp 2 non‑inverting | : Some models require a very small simulation

* 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 tl494 ltspice