A hybrid converter for improving efficiency at light load region

Author

Takahashi, Masaya ; Nishijima, Kimihiro ; Nagao, Michihiko ; Sato, Terukazu ; Nabeshima, Takashi

Author_Institution

Oita Univ., Oita, Japan

fYear

2010

fDate

21-24 June 2010

Firstpage

408

Lastpage

413

Abstract

In order to reduce power consumption of electronic equipment in stand-by mode, idle-mode and sleep-mode, a simple efficiency improvement technique for switching regulator in light load region is proposed. During the light load, small switching elements in a MOSFET driver circuit are used instead of switching elements in a main regulator circuit to reduce switching and driving losses. Of course, during the load heavier than light load (normal load), the MOSFET driver drives the switching elements in the main regulator circuit. The efficiency of a 1.8V/7A prototype buck converter is improved from 60% to 85% by using the proposed technique.

Keywords

MOSFET; driver circuits; switching convertors; MOSFET driver circuit; buck converter; current 7 A; efficiency improvement technique; electronic equipment; hybrid converter; idle-mode; light load region; power consumption reduction; regulator circuit; sleep-mode; stand-by mode; switching elements; switching regulator; voltage 1.8 V; Buck converters; Driver circuits; Energy consumption; MOSFET circuits; Pulse width modulation; Regulators; Strontium; Switches; Switching circuits; Switching converters; DC-DC converter; Light load; MOSFET driver; driving loss; efficiency; hybrid converter; idle-mode; sleep-mode; stand-by mode; switching loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5542212

Filename

5542212