Tl494 Circuit Diagram |verified|

| Pin # | Name | Function | | :--- | :--- | :--- | | 1 | Non-Inverting Input (Error Amp 1) | Usually connected to the voltage feedback. | | 2 | Inverting Input (Error Amp 1) | Connected to a reference voltage. | | 3 | Feedback/PWM Comp | Common point for compensation networks. | | 4 | Dead-Time Control (DTC) | Voltage here controls dead time (0V to 3V). | | 5 | CT | Capacitor for timing oscillator. | | 6 | RT | Resistor for timing oscillator. | | 7 | GND | Ground. | | 8 | C1 | Collector of Output Transistor 1. | | 9 | E1 | Emitter of Output Transistor 1. | | 10 | E2 | Emitter of Output Transistor 2. | | 11 | C2 | Collector of Output Transistor 2. | | 12 | VCC | IC Supply Voltage. | | 13 | Output Control | Selects mode: High = Push-pull, Low = Single-ended. | | 14 | REF | 5V Precision Reference Output. | | 15 | Inverting Input (Error Amp 2) | Usually used for current limiting. | | 16 | Non-Inverting Input (Error Amp 2) | Connected to current sense shunt. |

What are you planning to build (e.g., inverter, buck converter, push-pull)? tl494 circuit diagram

The oscillator generates a sawtooth wave. The PWM comparator compares this sawtooth with control signals (from error amps or feedback). The result is a variable-width pulse train that drives the output transistors. | Pin # | Name | Function |

Pin 14 provides a stable 5V output (accurate within 5%) used to bias external components and provide a reference for the error amplifiers. | | 4 | Dead-Time Control (DTC) |

Pin 1 (Non-inverting input) usually samples the output voltage via a voltage divider. Pin 2 (Inverting input) receives a reference voltage (usually 5V from Pin 14).

A Buck converter (step-down regulator) is the perfect beginner circuit and the best way to see the pin-level operation in action.

The TL494 circuit diagram works as follows: