Research on TM Control Method of UCC28065 Based on Interleaved Boost PFC

doi:10.16628/j.cnki.2095-8188.2022.10.003

Abstract

Abstract:

In order to improve the power level of the front stage boost PFC circuit,with lower input current ripple,smaller volume of input EMI filter,and better overall performance,an interleaved boost PFC circuit based on UCC28065 is proposed.The operating principle,operating process and TM control method of the circuit are analyzed in detail.The key parameters of the main circuit,control circuit and closed-loop compensation network are analysed and designed.Finally,the simulation is carried out and a 600 W experimental prototype is built up for verification.The experimental results show that the soft switching is realized,efficiency is improved to 96.35%,the power level is improved,and PFC performance have been obtained to verify the proposed control method.

Key words: power factor correction, interleaved boost circuit, input current ripple, transition mode control

CLC Number:

TM46

CHEN Xinwei, LIN Weiming, JING Huafeng. Research on TM Control Method of UCC28065 Based on Interleaved Boost PFC[J]. LOW VOLTAGE APPARATUS, 2022, 0(10): 17-24.

Figures/Tables 17

References 19

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参数	数值
额定功率/W	600
输入电压/V	85~265
输出电压/V	420
最小开关频率/kHz	50
功率因数	>0.99
效率典型值/%	96

参数	数值
输入电压/V	85~265
系统输出	420 V/600 W
最小开关频率/kHz	50
电感L₁、L₂	180 μH
输出电容C_o	2个220 μF/450 V铝电解电容并联
开关MOS管VT1、VT2	PA60R180P7
输出二极管VD1、VD2	STTH10LCD06FP