Study and Implementation of a Series-Resonant DC/DC Converter with Wide Range of Input Voltage

• Main Authors: Chien-An Chen, 陳建安
• Other Authors: Huang-Jen Chiu
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/20657847239604668805

碩士 === 國立臺灣科技大學 === 電子工程系 === 103 === This thesis focuses on the study and implementation of a series-resonant DC/DC converter with wide range of input voltage. The circuit architecture is composed of a buck/boost converter and a series-resonant converter (SRC). By using the output voltage feedback, a pulse-width-modulation (PWM) signal is generated and sent to buck/boost converter for voltage regulation. In order to raise the conversion efficiency, the synchronous rectification (SR) is applied on the secondary side of SRC. All primary switches can be operated under zero-voltage-switching (ZVS) to reduce switching losses. Constant frequency can be used and a wide range of input voltage can be achieved. Finally, a 19 V/150 W laboratory prototype was implemented and tested. High efficiency can be achieved under different input voltage conditions.