Light-load efficiency improvement using load adaptive gate driving method

Author

Jae-Hyun Kim ; Jae-Bum Lee ; Jong-Woo Kim ; Gun-Woo Moon ; Jae-Kuk Kim

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

fYear

2013

fDate

3-6 June 2013

Firstpage

240

Lastpage

244

Abstract

In this paper, a new gate driving method to improve light-load efficiency is proposed for the power conversion system with a standby converter. The proposed method reduces the gate driving voltage of power MOSFETs and operating voltage of controller ICs under light load conditions by adjusting the auxiliary output voltage of the standby converter. Therefore, the gate driving loss on MOSFETs and the loss on controller ICs are significantly reduced without the degradation of performance in the main power stage. To confirm the validity of this study, the DC/DC server power supply with 48V input, 12V/60A output for the DC/DC stage, and 5V/3A output for the standby stage is experimented.

Keywords

integrated circuits; power MOSFET; power convertors; DC-DC server power supply; auxiliary output voltage; controller IC; current 3 A; current 60 A; gate driving voltage; light load condition; light-load efficiency improvement; load adaptive gate driving method; power MOSFET; power conversion system; standby converter; voltage 12 V; voltage 48 V; voltage 5 V; Energy conversion; Moon; Radio access networks; Switches; Gate driving method; light load efficiency; server power supply; standby converter;

fLanguage

English

Publisher

ieee

Conference_Titel

ECCE Asia Downunder (ECCE Asia), 2013 IEEE

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4799-0483-9

Type

conf

DOI

10.1109/ECCE-Asia.2013.6579103

Filename

6579103