Tl494 Circuit Diagram [better] < 2025-2026 >

Always use a fuse and a "Dead-Time" margin on Pin 4 when building high-power inverters to prevent "shoot-through" (where both output transistors are on at once).

| Problem | Likely Cause | |------------------------|--------------------------------------------| | No switching | Pin12 VCC < 7V; Pin13 floating; CT/RT wrong; no power to outputs | | Full duty cycle always | Pin4 too low; feedback loop open (Pin3 stuck low) | | Output voltage too low | Divider resistors wrong; inductor saturating; load too high | | IC hot | Output transistors shorted; excessive drive current; VCC > 40V | | Instability / noise | Poor compensation; missing bypass caps; ground loops | tl494 circuit diagram

Because the TL494 can operate from 7V up to 40V, it is found in a wide variety of electronics: TL494 Pulse-Width-Modulation Control Circuits Always use a fuse and a "Dead-Time" margin

Pin 14 provides a stable 5V output (accurate within 5%) used to bias external components and provide a reference for the error amplifiers. excessive drive current