UCC28740DR

The UCC28740DR is a highly integrated active clamp flyback controller designed for offline AC/DC power supplies. It features advanced control algorithms for high efficiency and power density, making it ideal for various power supply applications.

Pinout

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

• VDD: Supply Voltage
• VIN: Input Voltage
• SYNC: Synchronization Input
• COMP: Compensation Pin
• FB: Feedback Pin
• SD: Shutdown Pin
• RT/CLK: Timing Resistor/Clock Input
• CC: Constant Current Regulator

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UCC28740DR IC for a visual representation.

Key Features

• Active Clamp Flyback Controller: Integrates active clamp technology for improved efficiency and power handling.
• Advanced Control Algorithms: Features advanced control algorithms for optimal performance in AC/DC power supply designs.
• High Efficiency: The UCC28740DR offers high efficiency operation, reducing power losses and heat generation.
• Compact Design: With its high level of integration, this controller enables compact power supply designs.
• Wide Input Voltage Range: Supports a wide input voltage range, making it suitable for universal power supply applications.

Note: For detailed technical specifications, please refer to the UCC28740DR datasheet.

Application

• Offline AC/DC Power Supplies: Ideal for use in offline power supply applications, including adapters, chargers, and LED drivers.
• Industrial Power Systems: Suitable for industrial power systems requiring high efficiency and reliable performance.
• Consumer Electronics: Used in various consumer electronics products for efficient power conversion.

Functionality

The UCC28740DR is a versatile active clamp flyback controller that enables high-efficiency power conversion in offline AC/DC power supplies. It offers advanced control features for optimized performance and reliability.

Usage Guide

• Supply Voltage: Connect VDD (Pin 1) to the supply voltage for proper operation.
• Feedback Loop: Connect the FB and COMP pins to regulate the output voltage and control loop stability.
• Shutdown Control: Use the SD pin to enable or disable the controller as needed.

Frequently Asked Questions

Q: What is the efficiency rating of the UCC28740DR?
A: The UCC28740DR offers high efficiency ratings, typically above 90% in typical operating conditions.

Q: Can the UCC28740DR handle wide input voltage variations?
A: Yes, the UCC28740DR is designed to support a wide input voltage range, making it versatile for various power supply applications.