UCC28740DR

Overview of UCC28740DR

The UCC28740DR is a flyback controller optimized for high-speed and low-voltage operations, providing excellent performance for analog and digital signal switching applications.

Pinout

The UCC28740DR pinout refers to the configuration and function of each pin in its SOIC-7 package. This package typically includes a diagram showing the layout of the pins when viewed from the top down with pins named sequentially. Each pin on the UCC28740DR has a specific role such as power supply input, ground connection, or signal interface.

Features

• Thermal Shutdown Protection: The UCC28740DR features thermal shutdown protection to prevent overheating and damage to the device.
• Soft Start: This device includes soft start functionality to reduce inrush current and prevent voltage overshoot during startup.
• Frequency Dithering for EMI Reduction: The UCC28740DR features frequency dithering for EMI reduction, ensuring compliance with energy efficiency standards such as DOE Level VI and CoC Tier 2.
• High Voltage Start-up and Integrated GaN FET: This device has high voltage start-up and integrated GaN FET for efficient power conversion and reduced component count.
• Input Overvoltage Protection and Cycle-by-Cycle Current Limiting: The UCC28740DR includes input overvoltage protection and cycle-by-cycle current limiting to prevent damage from excessive voltage or current.

Applications

• Offline AC-DC Power Supplies: The UCC28740DR is suitable for offline AC-DC power supplies, LED drivers, battery chargers, and industrial power supplies requiring high efficiency, low standby power consumption, and compliance with energy efficiency standards.
• Analog and Digital Signal Switching: This device provides excellent performance for analog and digital signal switching applications, making it an ideal choice for a wide range of industries.

Advantages and Disadvantages

Advantages

• High Efficiency: The UCC28740DR offers high efficiency in power conversion, reducing energy losses and heat generation.
• Low Standby Power Consumption: This device features low standby power consumption, making it suitable for applications where power savings are crucial.
• Compliance with Energy Efficiency Standards: The UCC28740DR meets energy efficiency standards such as DOE Level VI and CoC Tier 2, ensuring compliance with regulatory requirements.

Disadvantages

• Complex Design Requirements: The UCC28740DR may require complex design considerations to ensure proper operation and minimize EMI issues.
• Potential for Overheating: This device can generate heat during operation, which must be properly managed through thermal management techniques.

Equivalents

For similar functionalities, consider these alternatives to the UCC28740DR:

• STP16EP60: The STP16EP60 is a high-voltage power MOSFET suitable for flyback converters and other applications requiring high voltage switching.
• FAN7380: The FAN7380 is a high-frequency, high-power DC-DC converter controller designed for use in a wide range of applications, including industrial power supplies and LED drivers.

Frequently Asked Questions

Q: What is the maximum input voltage for the UCC28740DR?
A: The maximum input voltage for the UCC28740DR is 400V.

Q: Can the UCC28740DR be used in applications requiring high-frequency switching?
A: Yes, the UCC28740DR can be used in applications requiring high-frequency switching up to 200 kHz.

Q: Is the UCC28740DR suitable for use in industrial power supplies?
A: Yes, the UCC28740DR is suitable for use in industrial power supplies and other applications requiring high efficiency, low standby power consumption, and compliance with energy efficiency standards.

Q: Can the UCC28740DR be used in LED driver applications?
A: Yes, the UCC28740DR can be used in LED driver applications, providing efficient power conversion and reduced component count.