Tl494 Circuit Diagram [90% AUTHENTIC]

| Frequency | R_T (pin 6) | C_T (pin 5) | |-----------|-------------|-------------| | 20 kHz | 30 kΩ | 2.2 nF | | 50 kHz | 10 kΩ | 2.2 nF | | 100 kHz | 5.1 kΩ | 2.2 nF | | 200 kHz | 2.7 kΩ | 1 nF |

: These allow the IC to monitor both voltage and current simultaneously. One amplifier typically regulates the output voltage, while the second acts as a current limit for protection. Dead-Time Control (DTC) tl494 circuit diagram

| Pin | Name | Function | |-----|------------|-----------------------------------| | 1 | 1IN+ | Non-inverting input of Amp1 | | 2 | 1IN- | Inverting input of Amp1 | | 3 | FEEDBACK | PWM comparator input | | 4 | DTC | Dead-time control | | 5 | CT | Timing capacitor | | 6 | RT | Timing resistor | | 7 | GND | Ground | | 8 | C1 | Collector output 1 | | 9 | E1 | Emitter output 1 | | 10 | E2 | Emitter output 2 | | 11 | C2 | Collector output 2 | | 12 | VCC | Supply (7–40V) | | 13 | OUTPUT CTRL| Chooses push-pull (low) or single (high) | | 14 | REF | 5V reference output | | 15 | 2IN- | Inverting input of Amp2 | | 16 | 2IN+ | Non-inverting input of Amp2 | | Frequency | R_T (pin 6) | C_T

(pin 4): Never tie directly to GND. A voltage of 0V to 0.7V gives ~3% to 0% dead time. Above 0.7V increases dead time. Use a resistor divider or small capacitor. A voltage of 0V to 0