STMICROELECTRONICS EVLSTACF01-65WU Demonstration Board, STACF01, Active Clamp Flyback Controller

EVLSTACF01-65WU is a STACF01 non-complementary active clamp flyback controller demonstration board. This is a 65W Active Clamp Flyback (ACF) converter designed to evaluate the STACF01, ACF controller. The board can receive a universal AC input voltage and provides a selectable output voltage based on the USB PD specifications, from 5V to 20V. At the primary side, the STACF01 is paired with the MasterGaN1L, a 600V half-bridge enhancement mode GaN HEMT with high-voltage drivers. The STACF01 integrates a buck boost that allows to achieve low standby power consumption with a single transformer�s auxiliary winding. A synchronous rectification based on the SRK1004 is employed at the secondary side to enhance efficiency. The STACF01 integrates an 800V rated high-voltage startup, and offers a full set of protections and features, such as AC-brownout, X-CAP discharge, overload and short-circuit protection, output overvoltage protection.

• Universal AC input voltage: 90 to 264V AC, 47 to 63Hz
• Peak efficiency: 93.7% full load at 230V AC
• Standby power consumption: 46mW at 115V AC and 62mW at 230V AC