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3.3KW Interleaved PFC

Release time:

2023-05-24 11:57

PROJECT INTRODUCTION

The project is 3.3kW interleaved PFC, with input 176Vac~264Vac andoutput 400Vdc/8.5A. The 180interleaved operation significantlyreduces high frequency ripple current on the input DC BUS and theoutput capacitor; Switch frequency is set as 65KHz; Peak efficiency iup to 98.4% and PF exceeds 0.99 at full load and full input voltagerange. lt's a excellent DEMO for air conditioning, OBC and AC/DCconverter

DESIGN SPECIFICATION

Input Voltage	176Vac~264Vac
Output Voltage	380Vdc~420Vdc
Rated Power	3300W
System Efficiency	98%ahalfload97.8%afull load
PF	0.99
Switching Frequency	65KHz

FEATURES

· Use IXYS Mosfet and Wolfspeed Sic diode, to reduce Trr losses, highlyimprove the system efficiency:

· 180° interleaved parallel PFC, smaller input/output current ripple

· Smaller inductor volume, total volume is only 1/2 of the single Boost PFC

· Inductor volume is reduced by 33% compared to the traditional 20-40KhzIGBT PFC;

· Full protection, including input UVLO, output OvP,OTP and power-limiting:

· Small volume(135mm*200mm*58mm) power density up to 33W/incha3:

MAIN TOPOLOGY

MAIN DEVICES

Function	Part Number	Brand
Rectifier Bridge	SBR2572*2	HY
PFC MOS	IXFH60N65X2	Littelfuse
PFC Diode	C3D08060A	Wolfs peed
Driver IC	IXDN609SIA	Littelfuse
Output filter capacitor	EKP397M2WP45SZSHP	Samxon