UCC28060D

The UCC28060D is a power factor correction (PFC) controller IC designed to improve power efficiency in AC-DC power supplies. It operates by controlling the input current waveform to follow the input voltage waveform, achieving near-unity power factor and minimizing harmonic distortion.

Pinout

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

• VSENSE: Voltage Sense Input
• VDD: Power Supply Input
• COMP: Compensation Pin
• VFB: Feedback Pin
• CS: Current Sense Input
• RT: Timing Resistor Pin
• CT: Timing Capacitor Pin
• SD: Shutdown Pin
• OV: Overvoltage Protection Pin
• GND: Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UCC28060D IC for a visual representation.

Key Features

• Power Factor Correction: Implements active power factor correction to achieve high power efficiency and comply with regulatory standards.
• Wide Operating Voltage Range: Operates with a wide input voltage range, suitable for various AC mains voltages.
• Programmable Switching Frequency: Allows for flexibility in design by adjusting the switching frequency according to application requirements.
• Internal Overvoltage Protection: Includes built-in protection mechanisms to safeguard against overvoltage conditions.
• Enhanced Dynamic Response: Provides fast transient response to load variations, ensuring stable operation of power supplies.
• Low Start-Up Current: Minimizes inrush current during startup, improving reliability and efficiency.

Note: For detailed technical specifications, please refer to the UCC28060D datasheet.

Application

• AC-DC Power Supplies: Ideal for use in AC-DC converters and power supplies requiring power factor correction.
• LED Drivers: Suitable for LED driver applications to achieve efficient power conversion and control.
• Industrial Equipment: Used in various industrial equipment where high efficiency and reliable power delivery are essential.

Functionality

The UCC28060D integrates power factor correction capabilities, optimizing AC-DC power supplies for improved efficiency and performance.

Usage Guide

• Power Supply: Connect VDD (Pin 2) to the power supply voltage.
• Feedback Control: Use the COMP (Pin 3) and VFB (Pin 4) pins for feedback and compensation.
• Protection Features: Ensure proper connection of SD (Pin 8) and OV (Pin 9) for shutdown and overvoltage protection, respectively.

Frequently Asked Questions

Q: What is power factor correction (PFC) and why is it important?
A: Power factor correction improves power efficiency by reducing harmonic distortion and achieving near-unity power factor, ensuring optimal use of electrical power.

Q: Can the UCC28060D operate at different switching frequencies?
A: Yes, the UCC28060D allows for programmable switching frequencies to accommodate various design requirements and applications.