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Universal AC Input: 5V/500mA DC output: Non-isolated Flyback Converter Reference Design

Texas Instruments

This design demonstrates the use of UCC28880 high-voltage switcher to design an Offline Non-Isolated Flyback converter that can supply greater than 100mA output current. Using direct resistor-divider feedback: this design delivers a well-regulated 5V/500mA output with minimal component count.

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Features

UCC28880 based Non-Isolated Flyback converterDesign delivers >100mA output current5V output: regulated by direct resistor divider feedback network>77% efficiency at 2.5W/5V/500mATightly regulated 5V output (Short-circuit withstand capability of 3 secondsThis design is tested and includes test results and CAD files