A ZV-ZCT Boost Converter using an Auxiliary Resonant Circuit

Jung, Duk Young; Kim, Jun-Gu; Ryu, Dong-Kyun; Song, In-beom; Jung, Yong-Chae; Won, Chung-Yuen

doi:10.6113/tkpe.2012.17.4.298

Cited by 2 publications

(1 citation statement)

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“…전력 소자 들이 영전압(zero voltage transition : ZVT) 또는 영전 류(zero current transition : ZCT)일 때 턴-온/오프 동 작 하도록 하여, 스위칭 손실을 줄임으로써 시스템의 효 율을 높이고, 전력 소자들의 스트레스를 줄이며, EMI 노이즈를 저감 하는 방법이다. 이러한 동작 특성을 얻기 위해서 종래에 제안된 소프트 스위칭 기법들은 보조 스 위치와 보조 공진 회로를 반드시 구성해야 한다 [5]- [14] . 종래의…”

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A Novel Soft Switched Auxiliary Resonant Circuit of a PFC ZVT-PWM Boost Converter for an Integrated Multi-chips Power Module Fabrication

Kim¹,

Kim²,

Soh³

et al. 2013

The Transactions of the Korean Institute of Power Electronics

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This paper proposes a novel soft-switched auxiliary resonant circuit to provide a Zero-Voltage-Transition at turn-on for a conventional PWM boost converter in a PFC application. The proposed auxiliary circuit enables a main switch of the boost converter to turn on under a zero voltage switching condition and simultaneously achieves both soft-switched turn-on and turn-off. Moreover, for the purpose of an intelligent multi-chip power module fabrication, the proposed circuit is designed to satisfy several design constraints including space saving, low cost, and easy fabrication. As a result, the circuit is easily realized by a low rated MOSFET and a small inductor. Detail operation and the circuit waveform are theoretically explained and then simulation and experimental results are provided based on a 1.8 kW prototype PFC converter in order to verify the effectiveness of the proposed circuit.

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