A 1.2 MHz, 25 v to 100 v GaN-based resonant Dickson switched-capacitor converter with 1011 W/in3 (61.7 kW/L) power density

Benjamin B. Macy, Yutian Lei, Robert Carl Nikolai Pilawa Podgurski

Research output: Contribution to conferencePaper

Abstract

Switched-capacitor (SC) converters have generated interest in the research community due to the possibility of achieving high power densities at high voltage conversion ratios. This work proposes a resonant, 1-to-4 voltage conversion ratio Dickson SC converter. A single inductor is utilized to achieve zero current switching of all transistors, which allows for high switching frequency and high conversion efficiency. A split-phase control scheme is used in order to eliminate the current transients associated with the Dickson SC converter and the resultant power loss. Employing these techniques, a 25 V to 100 V Dickson SC converter prototype is implemented with GaN transistors. The converter achieves a switching frequency of 1.2 MHz and a peak efficiency of 92 %. The power stage of the converter is able to achieve a power density of a 1011 W/in3 at 263 W.

Original languageEnglish (US)
Pages1472-1478
Number of pages7
DOIs
StatePublished - May 8 2015
Event30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015 - Charlotte, United States
Duration: Mar 15 2015Mar 19 2015

Other

Other30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015
CountryUnited States
CityCharlotte
Period3/15/153/19/15

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Macy, B. B., Lei, Y., & Pilawa Podgurski, R. C. N. (2015). A 1.2 MHz, 25 v to 100 v GaN-based resonant Dickson switched-capacitor converter with 1011 W/in3 (61.7 kW/L) power density. 1472-1478. Paper presented at 30th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2015, Charlotte, United States. https://doi.org/10.1109/APEC.2015.7104542