A magnetic-less DC-DC converter for dual-voltage automotive systems

Author

Peng, Fang Zheng ; Zhang, Fan ; Qian, Zhaoming

Author_Institution

Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA

Volume

39

Issue

2

fYear

2003

Firstpage

511

Lastpage

518

Abstract

The automotive industry is moving toward 42 V to meet more electrical needs. Several dual-voltage (42 and 14 V) architectures have been proposed for the transition and accommodation of 14-V loads. A DC-DC converter that connects the 42 and 14 V is one key device in any dual-voltage architecture. This paper presents a compact, efficient, magnetic-less bidirectional DC-DC converter for dual-voltage (42/14 V) automotive systems. The DC-DC converter is based on the generalized multilevel converter topology having the ability to balance battery voltages, emit zero or low electromagnetic interference, and have low cost by using low-voltage MOSFETs. The main circuit of the DC-DC converter is analyzed and its control scheme is presented in the paper. A self-powered gate drive circuit is developed for the DC-DC converter to reduce costs, signal connections, and circuit complexity. A prototype has been built and experimental results are presented.

Keywords

DC-DC power convertors; MOSFET; automotive electronics; driver circuits; 14 V; 42 V; battery voltages; circuit complexity reduction; costs reduction; dual-voltage architecture; dual-voltage automotive systems; low electromagnetic interference; low voltage MOSFET; magnetic-less DC-DC converter; magnetic-less bidirectional DC-DC converter; self-powered gate drive circuit; signal connections reduction; zero electromagnetic interference; Automotive engineering; Batteries; Circuit topology; Complexity theory; Costs; DC-DC power converters; Electromagnetic interference; MOSFETs; Prototypes; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2003.808945

Filename

1189229