LLC DC/DC resonant converter with PLL control scheme

Ray-Lee Lin, Wei Cheng Ju

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Citations (Scopus)

Abstract

This paper proposes a capacitively loaded loop (LLC) DC/DC resonant converter with phase-locked loop (PLL) control scheme. The PLL control scheme enables the switching frequency of the converter to continuously track the resonant frequency of the LLC resonant tank by detecting the phase signals of the input and transformer secondary output voltages of the LLC resonant tank. Based on this resonant frequency, the switching frequency is adjusted to obtain the required voltage gain. However, because the operating frequency will not be lower than the resonant frequency of the LLC resonant tank, the switches of the inverter are both operated in zero-voltage-switching (ZVS) condition so that the turn-on switching losses are reduced. The proposed 200W LLC DC/DC resonant converter with PLL control scheme is then designed and implemented to validate and demonstrate the performance and feasibility of the proposed DC/DC converter.

Original languageEnglish
Title of host publicationAPEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition
Pages1537-1543
Number of pages7
DOIs
Publication statusPublished - 2007 Dec 1
EventAPEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition - Anaheim, CA, United States
Duration: 2007 Feb 252007 Mar 1

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

OtherAPEC 2007 - 22nd Annual IEEE Applied Power Electronics Conference and Exposition
CountryUnited States
CityAnaheim, CA
Period07-02-2507-03-01

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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