94% efficient 200W switching power supply reference design to produce 24V @ 8 Amps

Fairchild Semiconductor has announced a 200W DC-DC power supply reference design. This reference design called RD212 offers efficiency up to 94 percent and low noise characteristics due to its zero voltage switching (ZVS) technique. It provides a voltage of 24V at output current of 8A and offers several protection functions. The protection functions over-voltage protection (OVP), overload protection (OLP), over-current protection (OCP), abnormal over-current protection (AOCP) and internal thermal protection (TSD) are provided to protect the power supply from adverse electrical events. With user's guide, application notes and schematics (circuit diagram), it's an easy path to develop switching power supply for applications such as flat panel TVs, personal computer (PC), servers, street lighting and other off-line power supplies.

The RD212 is designed with FSFR2100, a green FPS power switch that integrates a pulse-frequency-modulation (PFM) controller with a high-voltage gate driver, two fast recovery MOSFETs (FRFETs) and important protection features such as soft-start and burst operation into a thermally-efficient SIP package. This switch offers a soft-switching approach that reduces switching losses, even with the increase in switching frequency. Switching losses are reduced through ZVS technique to allow the switch to handle up to 200W without a heat sink.

Complementing the RD212 reference design is the FEB212 evaluation board that contains a user's guide, application notes and a full tested board to evaluate your design.