X1 IN1 IN2 FB DTC CT RT GND C1 E1 C2 E2 VCC OC VREF IN2_NEG IN1_NEG TL494 V1 VCC GND 15 R_RT RT GND 15k C_CT CT GND 10n R_pullup VCC C1 1k R_load Out 0 10 L1 C1 Out 100u C1 Out 0 47u
Output Stage Logic & Dead Time
.tran 0 5m 0 1u .ic V(OUT_FB)=0 .probe .backanno .end tl494 ltspice
Since Texas Instruments does not provide LTspice models but does provide PSpice for TI and TINA TI, you have several options:
You can find third-party TL494 models from community sources: X1 IN1 IN2 FB DTC CT RT GND
13 = OUT1 14 = OUT2
) and see the immediate impact on the output waveforms without blowing up physical components. Stability Analysis : It is excellent for performing Bode plots tl494 ltspice
Third-party models often struggle during initialization or experience convergence problems. If your simulation crashes or fails to switch, apply these fixes: The "Time Step Too Small" Error
: Create a 16-pin symbol ( .asy ) that matches the subcircuit's pin order: 1IN+ , 1IN- , FB , DTC , CT , RT , GND , C1 , E1 , E2 , C2 , VCC , OC , REF , 2IN- , 2IN+ [1, 3].