Overview of Texas Instruments UCC28720DR

The UCC28720DR from Texas Instruments is a highly efficient, off-line flyback power converter with a constant-voltage, constant-current (CVCC) output. It is specifically designed to meet the stringent energy efficiency requirements of modern power supply standards. The device is suitable for a wide array of applications, including power adapters, LED lighting, and smart metering, among others.

Key Features

• Advanced Primary-Side Regulation (PSR): The UCC28720DR employs PSR, which eliminates the need for an optocoupler and secondary-side feedback components, simplifying the design and reducing the overall bill of materials.
• Energy Efficiency: With its ability to achieve low no-load power consumption and high active-mode efficiency, the UCC28720DR complies with global energy efficiency standards such as DoE Level VI and CoC Tier 2.
• Multi-Mode Control: The device operates in multiple modes, including quasi-resonant mode at higher loads and discontinuous conduction mode (DCM) at lighter loads, optimizing efficiency across the entire load range.
• Accurate Output Control: The UCC28720DR provides precise control of the output voltage and current over a wide range of input voltages and output load conditions, ensuring reliable operation of the end application.
• Protection Features: It includes various protection features such as overcurrent protection (OCP), overvoltage protection (OVP), and thermal shutdown, enhancing the safety and reliability of the power supply.

Applications

The UCC28720DR's versatile design makes it an excellent choice for a variety of applications, including:

• AC/DC power adapters for mobile devices
• LED lighting drivers
• Standby and auxiliary power supplies
• Smart metering power supplies

Package and Availability

This integrated circuit is available in a compact SOIC-7 package, making it suitable for space-constrained applications. The UCC28720DR is available for purchase through Texas Instruments' distribution network, ensuring easy access for designers and manufacturers.

With its combination of high efficiency, advanced features, and robust protection mechanisms, the UCC28720DR from Texas Instruments stands out as an excellent choice for designers looking to create compact and energy-efficient power supplies.