Title

Evaluation of Lateral Power MOSFETs in a Synchronous Buck Converter Using a Mixed-Mode Device and Circuit Simulation

Authors

Authors

B. Yang; J. S. Yuan;Z. J. Shen

Comments

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Abbreviated Journal Title

IEEE Trans. Electron Devices

Keywords

Body diode loss; buck converter; conduction loss; heavy ion radiation; hot electron; impact ionization; laterally double-diffused MOS (LDMOS); mixed-mode simulation; R(DS(ON)); reliability; switching loss; CHARGE COLLECTION; MOBILITY MODEL; DEGRADATION; TRANSISTORS; DEPENDENCE; ELECTRON; BURNOUT; Engineering, Electrical & Electronic; Physics, Applied

Abstract

This paper presents an evaluation of laterally double-diffused MOS transistors in synchronous dc-dc buck converters using a physical-based mixed device and circuit simulation. It is observed that impact ionization of the low-side transistor can be very high after the dead-time drain overshoot voltage point. In addition, heavy ion irradiation degrades power MOSFET performance and may lead to a potential circuit malfunction due to a significant increase in transient current if heavy ions strike the dc-dc buck converter at a critical time during switching.

Journal Title

Ieee Transactions on Electron Devices

Volume

58

Issue/Number

11

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

4004

Last Page

4010

WOS Identifier

WOS:000296099400047

ISSN

0018-9383

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