TL494CDR2G

The TL494CDR2G is a pulse width modulation control circuit designed for use in switched-mode power supplies and other power control applications. It incorporates all the functions required in the construction of a pulse-width modulation control circuit on a single chip.

Pinout

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

• RT/CT: External timing resistor and capacitor connection pin.
• DTC: Deadtime control pin for controlling the time between turn-off of one output and turn-on of the other.
• VC: Voltage control input for error amplifiers.
• REF: Reference voltage output for the error amplifiers.
• FB: Feedback input for regulating the output of the power supply.
• OSC: Oscillator timing capacitor connection pin.
• CT: Oscillator timing resistor connection pin.
• DT/SR: Soft-start/Ramping control pin.
• SD: Shutdown pin for turning off the output stages and the reference output.
• GND: Power ground.
• VCC: Positive power supply.
• OUT1: Output 1 of the error amplifier.
• OUT2: Output 2 of the error amplifier.
• OUT: PWM output for driving the power stage.

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the TL494CDR2G IC for a visual representation.

Key Features

• Complete PWM Control Circuit: Integrates all the necessary functions for pulse-width modulation control on a single chip.
• Wide Input Voltage Range: Suitable for operation with a wide range of input voltages in power supply applications.
• Deadtime Control: Allows precise control of the deadtime between the turn-off and turn-on of power supply outputs.
• Soft-Start Capability: Provides a soft-start and ramping control for gradual power supply startup, reducing stress on components.
• Shutdown Feature: Includes a shutdown pin for turning off the output stages and reference output as needed.

Note: For detailed technical specifications, please refer to the TL494CDR2G datasheet.

Application

• Switched-Mode Power Supplies: Ideal for use in SMPS applications for efficient power control and regulation.
• Power Inverters: Suitable for controlling power inverters in various power electronics systems.
• Battery Chargers: Used in battery charger circuits for regulating and controlling the charging process.

Functionality

The TL494CDR2G is a pulse width modulation control circuit designed to provide precise control and regulation of power in switched-mode power supplies and related applications. It incorporates essential features for efficient power control.

Usage Guide

• Timing Components: Connect external timing resistor and capacitor to the RT/CT and OSC/CT pins, respectively, as per the application requirements.
• Voltage Control: Connect the Voltage control input (VC) to error amplifiers as needed for controlling output voltages.
• Feedback: Use the FB pin for providing feedback from the power supply output for regulation.

Frequently Asked Questions

Q: What is the purpose of the deadtime control (DTC) pin?
A: The DTC pin allows precise control of the deadtime between the turn-off of one output and turn-on of the other, ensuring proper operation of the power supply.

Q: Can the TL494CDR2G be used in wide input voltage range applications?
A: Yes, the TL494CDR2G is suitable for operation with a wide range of input voltages, making it versatile for various power control applications.