Title :
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
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;
Conference_Titel :
ECCE Asia Downunder (ECCE Asia), 2013 IEEE
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-0483-9
DOI :
10.1109/ECCE-Asia.2013.6579103
