Texas Instruments UCC28910 flyback power products

Texas Instruments has introduced two flyback power solutions which achieve high energy efficiency and low standby power consumption for 5 to 100 W AC/DC power supplies.

The UCC28910 700 V flyback switcher and UCC28630 high-power, Green-Mode controller expand TI’s portfolio of flyback controllers used in personal electronics, printers, whit goods and smart meters.

Combining high density with high efficiency, the UCC28910 switcher with integrated high-voltage power MOSFET achieves good standby power consumption for 5 to 10 W designs and features low constant-current output tolerance of 5%, providing an accurate, maximum current across different input voltages. The controller’s ability to support primary side regulation (PSR) technology improves reliability in 10 to 100 W power supplies.

The products meet and exceed European Commission standby regulations, including the IPP 5-star mobile charger rating of less than 30 mW power performance for no-load standby power and the EC Code of Conduct (Tier 1 and 2) for 5 to 10 W designs (UCC28910) and for 30 W designs (UCC28630).

The UCC28910 achieves 80% average efficiency in 7.5 W designs and 78% efficiency at a 10% load. The UCC28630 achieves greater than 88% average efficiency in 65 to 130 W designs, and 87% efficiency at a 10% load. Both units support primary side regulation and eliminate the need for an optocoupler feedback circuit to increase reliability.