High efficiency autonomous controlled cascaded LDOs for green battery system

Leona Okamura; Fukashi Morishita; Kazutami Arimoto; Tsutomu Yoshihara

doi:10.1109/ASICON.2009.5351434

High efficiency autonomous controlled cascaded LDOs for green battery system

Leona Okamura, Fukashi Morishita, Kazutami Arimoto, Tsutomu Yoshihara

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

Low DropOut Converter (LDO) is commonly employed as voltage down converter (VDC) because of its high compatibility with System on Chips (SoCs), but in general, LDO is not so high power efficient. This paper presents an Autonomous Controlled Cascaded LDOs power system which achieves about doubled power efficiency of the conventional LDO systems. In proposed architecture, existing logic circuitries are divided into two load group, and electrical charges are shared among the blocks and a tank circuit. We confirmed that our architecture makes effective use of 88.9% of the battery energy by simulation which is comparable to that of switching regulators whereas ours is easier to implement in SoCs.

Original language	English
Title of host publication	ASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC
Pages	336-339
Number of pages	4
DOIs	https://doi.org/10.1109/ASICON.2009.5351434
Publication status	Published - 2009
Event	2009 8th IEEE International Conference on ASIC, ASICON 2009 - Changsha Duration: 2009 Oct 20 → 2009 Oct 23

Other

Other	2009 8th IEEE International Conference on ASIC, ASICON 2009
City	Changsha
Period	09/10/20 → 09/10/23

Keywords

Charge recycle
Energy saving
Green battery
LDO

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

Access to Document

10.1109/ASICON.2009.5351434

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Cite this

Okamura, L., Morishita, F., Arimoto, K., & Yoshihara, T. (2009). High efficiency autonomous controlled cascaded LDOs for green battery system. In ASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC (pp. 336-339). [5351434] https://doi.org/10.1109/ASICON.2009.5351434

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abstract = "Low DropOut Converter (LDO) is commonly employed as voltage down converter (VDC) because of its high compatibility with System on Chips (SoCs), but in general, LDO is not so high power efficient. This paper presents an Autonomous Controlled Cascaded LDOs power system which achieves about doubled power efficiency of the conventional LDO systems. In proposed architecture, existing logic circuitries are divided into two load group, and electrical charges are shared among the blocks and a tank circuit. We confirmed that our architecture makes effective use of 88.9% of the battery energy by simulation which is comparable to that of switching regulators whereas ours is easier to implement in SoCs.",

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