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

Author

Peng, Fang Z. ; Zhang, Fan ; Qian, Zhaoming

Author_Institution

Dept. of ECE, Michigan State Univ., East Lansing, MI, USA

Volume

2

fYear

2002

fDate

13-18 Oct. 2002

Firstpage

1303

Abstract

The automotive industry is moving toward 42 volt to meet the more electric needs. Several dual voltage (42 and 14 volt) architectures have been proposed for the transition and accommodation of 14-volt loads. A DC-DC converter that connects the 42 and 14 volt architectures is one key device in any dual voltage architecture. This paper presents a compact, efficient, magnetic-less bi-directional DC-DC converter for dual voltage (42/14 Volt) 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 (EMI), and have low cost by using low-voltage metal oxide field effect transistors (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; automotive electronics; driver circuits; 14 V; 42 V; automotive industry; battery voltages balancing; circuit complexity reduction; costs reduction; dual voltage architecture; dual voltage automotive systems; low EMI; low electromagnetic interference; low-voltage MOSFETs; low-voltage metal oxide field effect transistors; magnetic-less bi-directional DC-DC converter; multilevel converter topology; self-powered gate drive circuit; signal connections reduction; Automotive engineering; Batteries; Bidirectional control; Circuit topology; Costs; DC-DC power converters; Electromagnetic interference; FETs; MOSFETs; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the

Conference_Location

Pittsburgh, PA, USA

ISSN

0197-2618

Print_ISBN

0-7803-7420-7

Type

conf

DOI

10.1109/IAS.2002.1042726

Filename

1042726