Power supply ref design achieves 94% efficiency

Fairchild Semiconductor has announced the availability of RD212, a 200W DC/DC power supply reference design that makes it easier for designers to develop more efficient power supplies and to meet stringent energy efficiency specification.

The RD212 delivers up to 94 per cent efficiency and low noise characteristics due to its zero voltage switching (ZVS) technique. It provides a 24V output at 8A and offers protection functions. These protection functions—over-voltage protection, overload protection, over-current protection (OCP), abnormal OCP and internal thermal protection—protect the power supply from adverse electrical events.

The RD212 reference design is an optimal tool for simplifying design, increasing efficiency and conserving space in flat-panel TVs, PCs, servers, street lighting and various off-line power supplies.

The RD212 features the FSFR2100, a green FPS power switch that integrates a pulse-frequency-modulation controller with a high-voltage gatedriver, two fast recovery MOSFETs 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 though the actual switching frequency increases. Through its ZVS technique, switching losses are further reduced, allowing 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. The reference design costs Rs.3,418.19 ($68.75).

- Henri Arnold
EE Times Europe

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