Small Footprint Secondary-Side MOSFET Driver Reduces BOM Cost

The APR345 secondary-side MOSFET driver introduced by Diodes Incorporated delivers the smallest size, lowest BOM cost solution for synchronous rectification in 5V to 12V power supplies. This device is Diodes APR345 Lsuitable for line-powered adapters and chargers for consumer products such as smartphones and tablets, PVRs and IPTV boxes, cable and xDSL modems, datacom equipment and other portable consumer/home appliances. This device provides a high-performance power conversion solution for standby and auxiliary power supplies.

In conjunction with an external MOSFET for greater design flexibility, the APR345 driver provides synchronous secondary-side rectification control that supports various flyback circuit topologies operating in CCM, DCM and quasi-resonant modes. By sensing the external MOSFET’s drain‑to‑source voltage and driving the MOSFET to reduce the voltage drop, the APR345 reduces power dissipation and improves overall system efficiency.

Supplied in a SOT26 package and requiring a minimum of external components, the highly integrated APR345 provides a versatile, efficient and cost-effective rectification controller that occupies a smaller board footprint that competing devices.

In 1k piece quantities, the APR345 is priced at $0.37 each.

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