By Diodes Incorporated 61
Diodes' ZXGD3113 is a synchronous rectifier controller designed to be coupled with a MOSFET to replace lossy Schottky rectifiers in power supplies based on a fly-back or resonant converter topology.
The ZXGD3113 controls an external MOSFET, such as the 100 V 16 mΩ N-channel DMT10H015LPS, configured to operate as an ideal diode. Replacing a Schottky rectifier with the ZXGD3113+MOSFET can significantly increase the efficiency of AC/DC power supplies targeting the industrial, consumer, and telecommunications markets.
With improved efficiency, this negates the need for a heatsink to save space compared to a lossy Schottky rectifier. Furthermore, the smaller form factor SOT26 reduces the solution size from the industry standard SO8 and by operating up to 250 kHz, the PSU designers can use smaller transformers, further saving space and BOM costs.
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