Comparison of Different Designs of a 42-V/14-V DC/DC Converter Regarding Losses and Thermal Aspects

Author

Lee, Seung-Yo ; Pfaelzer, Arthur G. ; van Wyk, J.D.

Author_Institution

Samsung Electron. Co., Ltd, Suwon-City

Volume

43

Issue

2

fYear

2007

Firstpage

520

Lastpage

530

Abstract

In this paper, thermal analysis for a 42-V/14-V bidirectional dc/dc converter with integrated inductors is performed. An interleaved dc/dc converter system with four channels was chosen for the automotive-converter topology with 42-V/14-V dual-output voltages. Coupled inductors were designed and used for the four-channel dc/dc converter. A 3-D thermal model based on finite-element modeling using I-DEAS is presented and the thermal behavior of the dc/dc converter system is simulated and analyzed. The thermal model includes a printed circuit board, integrated inductors, a heat sink, and switching devices (MOSFETs). The analyzed thermal result can help to design a converter system under severe ambient-temperature conditions

Keywords

DC-DC power convertors; automotive electronics; coupled circuits; finite element analysis; heat sinks; inductors; network topology; printed circuits; switching convertors; 14 V; 3D thermal model; 42 V; MOSFET; ambient temperature conditions; automotive-converter topology; bidirectional DC-DC converter; coupled inductors; finite element modeling; four-channel DC-DC converter; heat sink; integrated inductors; interleaved DC-DC converter system; printed circuit board; switching devices; thermal analysis; thermal behavior; Analytical models; Circuit simulation; Coupling circuits; DC-DC power converters; Finite element methods; Inductors; Performance analysis; Printed circuits; Topology; Voltage; Bidirectional dc/dc converter; finite-element modeling (FEM); integrated inductor; thermal analysis;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2006.889808

Filename

4132875