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DN91

Part Number	DN91
Manufacturer	Diodes
Description	Synchronous rectification improves set top box power supply efficiency
Published	Sep 1, 2015
Detailed Description	A Product Line of Diodes Incorporated DN91 Synchronous rectification improves set top box power supply efficiency Yong ...
Datasheet	DN91 PDF File

Overview

A Product Line of Diodes Incorporated DN91 Synchronous rectification improves set top box power supply efficiency Yong Ang, Diodes Incorporated Introduction This design note describes the implementation of synchronous rectification on multiple-output flyback converters.
It is focused on the low side rectification approach as shown in Figure 1 to facilitate a common drive for synchronous MOSFETs on low voltage 3.
3 and 5V outputs.
The note concludes with practical measurement on a 27W four-output set top box power supply to demonstrate that a 3% efficiency improvement over a Schottky solution can be achieved with the aid of the ZXGD3101 synchronous MOSFET controller.
KBP 206 G BR R9 ...

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