2500W ON BOARD DC/DC

Release time:

2023-05-24 10:36

pic

PROJECT INTRODUTION
The reference design is a 2.5KW on board DC/DC converter with inputvoltage range 200~450Vdc, rated output 12.5V/200A. The maintopology is Boost + full bridge LLC + peak current control synchronousrectifier output.
 
DESIGN SPECIFICATION
Input Voltage 200vdc-450Vdc
Output Voltage 12.5Vdc
Rated Power 2500KW
System Efficiency 95.6%网25%load:93afull load
Switching Frequency Boost:100KHz; LLC:80~300KHz

 

FEATURES

· Boost + peak current control synchronous rectifier LLC:

· High efficiency, peak up to 95.6%:

· Fast response, cycle-by-cycle protection;

· No electrolytic capacitor design, longer life and higher reliability;

· Small volume 145mm200mm*50mm, power density 28W/incha3:

· Full protection, including input OVP & UVP, output ovp & OCP and shortcircuit protection

 

MAIN TOPOLOGY

pic

 

MAIN DEVICES
 
Function Part Number Brand
Boost-MOS IXFH46N65X2 IXYS
Boost Diode C3D10060A Wolfspeed
Boost Driver IXDN604SIA IXYS
LLC Primary MOSFET IXFH60N65X2 IXYS
LLC Secondary MOSFET IXTA340NO4T4-7 IXYS
LLC MOSFET Driver IXDN604SIA IXYS

 

MEASUREMENT RESULTS AND WAVEFORMS

picBoost: 500Vin 30kW 2 Channels Vgs&Vds 

picBoost: 500Vin 3kW 2 Channels Vgs&Vds&Iind

 

 

 

pic200Vin Boost Vgs&Vds

pic400Vin Boost Vgs&Vds

 

 

 

picLLC Vgs_Pri&Vds&lpri&Vgs_sec

picLLC Vds_sec&Ipri&Vgs_sec

 

 

 

picOutput voltage ripple @ no load

picStart up @ no load

 

 

 

picOutput voltage @ full load

picStart up @ full load

 

Download related files

File name
Release time
Download

2500W on board DCDC

2023-05-24