1. Efficiency Improvement of Synchronous Buck Converter by Passive Auxiliary Circuit.
- Author
-
Pattnaik, Swapnajit, Panda, Anup Kumar, and Mahapatra, Kamalakanta
- Subjects
- *
PULSE width modulation , *ROTARY converters , *CAPACITORS , *ELECTRIC inductors , *FEASIBILITY studies , *SHOCK absorbers , *ELECTRIC switchgear , *ELECTRIC potential - Abstract
This paper proposes a zero-voltage-transition (ZVT) pulsewidth-modulated (PWM) synchronous buck converter, which is designed to operate at low voltage and high efficiency typically required for portable systems. A new passive auxiliary circuit that allows the main switch to operate with zero-voltage switching has been incorporated in the conventional PWM synchronous buck converter. The operation principles and detailed steady-state analysis of the ZVT PWM synchronous converter with a passive auxiliary circuit are presented. All of the semiconductor devices aside from the main switch operate under soft-switching conditions. Thus, the auxiliary circuit provides a larger overall efficiency. The feasibility of the auxiliary circuit is confirmed by the simulation and experimental results. [ABSTRACT FROM PUBLISHER]
- Published
- 2010
- Full Text
- View/download PDF