TL494IN

The TL494IN is a pulse-width-modulation (PWM) control circuit designed for use in power supply applications. It provides adjustable control of output voltage and duty cycle, making it ideal for switch-mode power supplies and DC-DC converters.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• 1. CT: Timing capacitor pin for oscillator frequency setting.
• 2. RT: Timing resistor pin for oscillator frequency setting.
• 3. Vref: Reference voltage for error amplifier.
• 4. Output: PWM output.
• 5. Deadtime: Pin for setting dead time between high-side and low-side gate driver outputs.
• 6. VCC: Positive power supply.
• 7. Feedback: Feedback input for output regulation.
• 8. Ground: Power ground.

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the TL494IN IC for a visual representation.

Key Features

• Pulse-Width Modulation Control: Allows precise control of output voltage and duty cycle.
• Wide Operating Voltage Range: Supports a wide input voltage range, making it suitable for various power supply designs.
• Adjustable Frequency: The TL494IN provides frequency adjustment capabilities for oscillator control.
• Soft-Start Function: Includes a soft-start feature to prevent excessive inrush current during power-up.
• Overcurrent Protection: Offers overcurrent protection for safe operation in power supply applications.

Note: For detailed technical specifications, please refer to the TL494IN datasheet.

Application

• Switch-Mode Power Supplies: Ideal for use in switch-mode power supply designs for efficient voltage regulation.
• DC-DC Converters: Suitable for DC-DC converter circuits requiring adjustable output voltage and duty cycle control.
• Battery Chargers: Can be used in battery charger applications for regulated charging processes.

Functionality

The TL494IN is a versatile PWM control circuit that enables precise regulation of output voltages and duty cycles in power supply applications. It offers flexibility and efficiency in power supply design.

Usage Guide

• Feedback Control: Connect the feedback pin to the output for voltage regulation.
• Frequency Adjustment: Use the timing capacitor and resistor to adjust the oscillator frequency.
• Dead Time Setting: Configure the dead time pin for appropriate high-side and low-side gate driver timing.

Frequently Asked Questions

Q: What is the maximum operating frequency of the TL494IN?
A: The TL494IN can typically operate up to 300 kHz, depending on the circuit configuration and components used.

Q: Is the TL494IN suitable for high-power applications?
A: Yes, the TL494IN can be used in high-power applications with appropriate circuit design and heat dissipation considerations.