Home page

3KW high efficiency on board DCDC

Release time:

2023-05-16 18:19

PROJECT INTRODUCTION

This reference design solution is a 3kW on board DC/DC, with inputvoltage range 350-700Vdc, rated output 27.5V/10A (peak 130A). Maintopology selected phase shift full bridge and synchronousrectification, making the solution design simple and reliable.

DESIGN SPECIFICATION

Input Voltage	350vdc-700Vdc
Output Voltage	27.5Vdc
Rated Power	3000OW
System Efficiency	Peak 96%: 93%@full load
Switching Frequency	100KHZ

FEATURES

· PSFB + Sync Rectifier base on SiC, simple & reliable system;

· High efficiency, peak up to 96%;

· Suitable for wide range output applications;

· Small volume (145mm235mm*45mm): power density 30W/incha3;

· Full protection, including input OVP, UVP & OCP, BUS OVP, output OVP.UVP & OCP, Short circuit protection, etc:

MAIN TOPOLOGY

poc

MAIN DEVICES

Function	Part Number	Brand
Primary SIC MOSFET	C3M0120100K	Wolfs peed
Claim Diode	C4D05720A	Wolfs peed
Secondary MOSFET	IXFH90N20X3	Wolfs peed
Primary MOSFET Driver	IXDN604SIA	Littelfuse
SecondaryMOSFET Driver	IXDN609SIA	Littelfuse