NDLI: 87% Overall High Efficiency and 11 μA Ultra-Low Standby Current Derived by Overall Power Management in Laptops With Flexible Voltage Scaling and Dynamic Voltage Scaling Techniques

Content Provider	IEEE Xplore Digital Library
Author	Shang-Hsien Yang Chao-Chang Chiu Chih-Wei Chang Chen-Min Chen Che-Hao Meng Ke-Horng Chen
Copyright Year	1986
Abstract	The proposed overall power management in laptops can improve overall power conversion efficiency by the flexible voltage scaling (FVS) technique in cooperation with conventional dynamic voltage scaling (DVS) technique. The FVS technique separates the controller into two parts. One is a simple primary side controller and the other is emerged into the power management unit in the laptop for getting direct power control from the microprocessor. 12% light load efficiency and 7% peak efficiency are improved compared to conventional design with the DVS technique only but without the FVS technique. Furthermore, green mode is proposed to effectively reduce chip quiescent current to 11μA and to suppress power loss to 10 mW in ultra-light load, which is much smaller than 500 mW standby power defined by the restriction of Energy Star Standard and 40 mW of state-of-art commercial products.
Sponsorship	IEEE Power Electronics Society
Starting Page	3118
Ending Page	3127
Page Count	10
File Size	1473905
File Format	PDF
ISSN	08858993
Volume Number	31
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Portable computers Voltage control Topology Control systems Dynamic voltage scaling DC-DC power converters Charge pumps green mode (GM) Overall power management (OPM) dynamic voltage scaling (DVS) technique flexible voltage scaling (FVS) technique overall power management (OPM) Dynamic voltage scaling (DVS) technique
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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87% Overall High Efficiency and 11 μA Ultra-Low Standby Current Derived by Overall Power Management in Laptops With Flexible Voltage Scaling and Dynamic Voltage Scaling Techniques

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