UCC28910DR

The UCC28910DR from Texas Instruments is a high-voltage flyback switcher designed for efficient power conversion. It provides both constant-voltage (CV) and constant-current (CC) output regulation, eliminating the need for an optical coupler. This device integrates a 700-V power FET and controller, processing information from the flyback auxiliary winding and power FET to achieve precise output control.

Key features include ±5% output voltage regulation accuracy and ±5% output current regulation accuracy, which compensates for AC line and primary inductance variations. The device enables low standby power consumption, less than 30 mW, through its smart power management and integrated high-voltage startup current source. With a maximum switching frequency of 115 kHz, it is designed for high-power density applications.

The UCC28910DR incorporates valley switching and frequency dithering to ease EMI compliance. It also includes built-in protection features such as thermal shutdown, low line, and output over-voltage protection, ensuring component stress levels are managed across the operating range. The switcher is suitable for various applications including wall adapters, chargers, smart plugs, IoT devices, and LED lighting.

Packaged in a 7-SOIC surface-mount package, the UCC28910DR is designed for ease of integration into compact electronic designs.