95% light-load efficiency single-inductor dual-output DC-DC buck converter with synthesized waveform control technique for USB type-C

Wen Hau Yang, Chiun He Lin, Ke-Horng Chen, Chin Long Wey, Ying Hsi Lin, Jian Ru Lin, Tsung Yen Tsai, Jui Lung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

The proposed single-inductor dual-output (SIDO) converter can provide wide range in duty ratio control to convert input voltage 5-20V to dual output voltages 3.3V and 1.2V when its switching frequency is raised to 10MHz for compact size solution. The proposed synthesized waveform control (SWC) technique can emulate the inductor current without being affected by switching noise. Thus, the minimum allowable duty ratio can be lowered to 6% to meet the requirement of USB-C in one-stage low duty ratio conversion. Moreover, the switching frequency is dynamically decreased by the derived DC loading information from the SWC technique. Not only the output power MOSFET but also the main power MOSFET switch in a load-dependent switching frequency for power saving. 67% more power reduction can be obtained. 95% and 83% efficiency are achieved at light and heavy loads, respectively, when the silicon is limited within 1400μm∗1350μm.

Original languageEnglish
Title of host publication2016 IEEE Symposium on VLSI Circuits, VLSI Circuits 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509006342
DOIs
StatePublished - 21 Sep 2016
Event30th IEEE Symposium on VLSI Circuits, VLSI Circuits 2016 - Honolulu, United States
Duration: 14 Jun 201617 Jun 2016

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume2016-September

Conference

Conference30th IEEE Symposium on VLSI Circuits, VLSI Circuits 2016
CountryUnited States
CityHonolulu
Period14/06/1617/06/16

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