EVL400W-ADP/ATX, Evaluation Board Using L4984D, L6699 and SRK2000A 12V - 400W SMPS for Adapter, Desktop and AIO

EVAL400W-ADP/ATX, Evaluation Board is a 400 W, wide input mains range, power factor corrected solution for high power adapters and ATX power supplies with very low power consumption at no/light-load operation without a dedicated standby supply. The application architecture is based on two stages: a front-end PFC pre-regulator based on a CCM boost PFC controller, using the L4984D and a down-stream LLC resonant half bridge converter, designed around the L6699 device, providing a 12 V regulated output voltage, dedicated to supply the ATX or similar applications requiring to meet the most stringent efficiency and standby regulations. The very high efficiency during normal load operation and the very small heatsink used at the secondary side is obtained by using synchronous rectification, based on the SRK2000A device