UCC25630-4DDBR

The UCC25630-4DDBR is a highly integrated, resonant mode power supply controller designed by Texas Instruments. It is specifically tailored for applications requiring high efficiency and low standby power consumption, making it suitable for a variety of power supply designs, including adapters, chargers, and industrial power supplies.

Key Features:

1. Resonant Mode Control: The UCC25630 utilizes a quasi-resonant control scheme, which helps to minimize switching losses and improve overall efficiency, especially at light load conditions. This is achieved by allowing the switching to occur at zero voltage (ZVS), reducing electromagnetic interference (EMI) and improving thermal performance.

2. Wide Input Voltage Range: The device supports a broad input voltage range, typically from 85V to 265V AC, making it versatile for global applications. This feature allows it to be used in various regions without the need for significant redesign.

3. Integrated Functions: The UCC25630 integrates several functions that simplify the design process. It includes a high-voltage startup circuit, a programmable frequency oscillator, and a built-in error amplifier for voltage regulation. This integration reduces the number of external components required, leading to a more compact design.

4. High Efficiency: The controller is designed to achieve high efficiency across a wide load range, often exceeding 90% under optimal conditions. This efficiency is crucial for reducing energy consumption and meeting regulatory standards for energy efficiency.

5. Protection Features: The UCC25630 includes various protection mechanisms, such as over-voltage protection (OVP), under-voltage lockout (UVLO), and thermal shutdown. These features enhance the reliability and safety of the power supply.

6. Flexible Output Voltage Regulation: The device supports both primary-side and secondary-side regulation, allowing designers to choose the most suitable method for their application. This flexibility can help optimize performance and reduce component count.

7. Compact Package: The UCC25630-4DDBR is housed in a small, thermally efficient 16-pin HTQFP (Thin Quad Flat Package), which aids in space-saving designs and improves thermal management.

8. Application Suitability: It is ideal for applications such as:

   • AC-DC power supplies
   • Battery chargers
   • LED drivers
   • Telecom power supplies
   • Industrial power systems

Electrical Characteristics:

• Operating Temperature Range: The device typically operates within a temperature range of -40°C to +125°C, ensuring reliability in various environmental conditions.
• Switching Frequency: The UCC25630 can operate at a programmable switching frequency, typically in the range of 100 kHz to 200 kHz, allowing for design flexibility based on application requirements.

Conclusion:

The UCC25630-4DDBR from Texas Instruments is a robust and efficient solution for designing resonant mode power supplies. Its combination of high efficiency, integrated features, and protective functions makes it an excellent choice for modern power supply applications, particularly where energy efficiency and compact design are critical.