학술논문
A Boost Converter with Lossless Passive Snubber for Powering the 5G Small Cell Station
Document Type
Periodical
Source
IEEE Transactions on Industry Applications IEEE Trans. on Ind. Applicat. Industry Applications, IEEE Transactions on. 59(3):3530-3542 Jun, 2023
Subject
Language
ISSN
0093-9994
1939-9367
1939-9367
Abstract
The existing DC-DC quarter-brick or eighth-brick converter with a rated power of 300 W is usually designed with a narrow input voltage range from 36 to 72 V DC with limited hold-up time. In this paper, a two-stage power supply unit constructed by a front-end boost converter cascaded with a brick converter is adopted to extend the input voltage range and the hold-up time. A new lossless snubber is proposed and applied to the boost converter to slow the slope of the drain-source voltage rising when the MOSFET is turned off. The experimental results show that the proposed snubber provides a boost converter with a higher conversion efficiency and less electromagnetic interference emissions.