demonstration

A wide conversion ratio, 92.8% efficiency, 3-level buck converter with adaptive on/off-time control and shared charge pump intermediate voltage regulator

Authors:

Kousuke Miyaji,

Yuki Karasawa,

Takanobu FukuokaAuthors Info & Claims

ASPDAC '19: Proceedings of the 24th Asia and South Pacific Design Automation Conference

Pages 1 - 2

https://doi.org/10.1145/3287624.3287752

Published: 21 January 2019 Publication History

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Abstract

An efficient cascode 3-level buck converter with adaptive on/off-time (AOOT) control and shared charge pump (CP) intermediate voltage (V_mid) regulator is proposed and demonstrated. The conversion ratio (CR) V_out/V_in is enhanced by using the proposed AOOT control scheme, where the control switches between adaptive on-time (AOnT) and adaptive off-time (AOffT) mode according to the target CR. The proposed CP shares flying capacitor C_fly and power switches in the 3-level buck converter to generate V_mid=V_in/2 achieving both small size and low loss. The proposed 3-level buck converter is implemented in a standard 0.25μm CMOS process. 92.8% maximum efficiency and wide CR are obtained with the integrated V_mid regulator.

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ASPDAC '19: Proceedings of the 24th Asia and South Pacific Design Automation Conference

January 2019

794 pages

ISBN:9781450360074

DOI:10.1145/3287624

General Chair:
Toshiyuki Shibuya
Fujitsu Laboratories

Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

In-Cooperation

IEICE ESS: Institute of Electronics, Information and Communication Engineers, Engineering Sciences Society
IEEE CAS
IEEE CEDA
IPSJ SIG-SLDM: Information Processing Society of Japan, SIG System LSI Design Methodology

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 21 January 2019

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SIGDA

ASPDAC '19: 24th Asia and South Pacific Design Automation Conference

January 21 - 24, 2019

Tokyo, Japan

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Overall Acceptance Rate 466 of 1,454 submissions, 32%

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ASPDAC '25

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30th Asia and South Pacific Design Automation Conference

January 20 - 23, 2025

Tokyo , Japan

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