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A family of improved ZVT PWM converters using an auxiliary resonant source

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Author(s): Martins M. L. | Pinheiro H. | Pinheiro J. R. | Gründling H. A. | Hey H. L.

Journal: Sba: Controle & Automação Sociedade Brasileira de Automatica
ISSN 0103-1759

Volume: 14;
Issue: 4;
Start page: 412;
Date: 2003;
Original page

Keywords: DC-DC Converters | Zero-Voltage Transition | Auxiliary Resonant Source

ABSTRACT
This paper presents a novel family of Zero Voltage Transition (ZVT) DC-DC PWM Converters that uses a resonant circuit as auxiliary commutation source to control the current through the auxiliary switch without additional current stresses on main devices. The improved ZVT commutation cell enables the main switch to be turned on and off at Zero Voltage Switching (ZVS) and the auxiliary switch to be turned on and off at Zero Current Switching (ZCS) from zero to full-load.
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