NDLI: Adaptive Peak-Inductor-Current-Controlled PFM Boost Converter With a Near-Threshold Startup Voltage and High Efficiency

Content Provider	IEEE Xplore Digital Library
Author	Wu, H.-H. Wei, C.-L. Hsu, Y.-C. Darling, R.B.
Copyright Year	1986
Abstract	A high-efficiency boost dc-dc converter with adaptive peak-inductor-current (APIC) control method is proposed. Besides, a novel two-step startup procedure is also proposed and applied on the boost converter. The proposed integrated boost converter was fabricated by using a 0.18-μm 1P6M mixed-signal process with a die area of 0.96 mm × 0.75 mm, and it is meant to be used with low-power, low-voltage green energy sources and batteries, such as fuel cells, solar cells, and nickel-metal hydride batteries. Hence, the power efficiency, minimal startup voltage, and minimal input voltage are the most important design considerations. The output voltage of the proposed converter is set to 1.8V, and the measured power efficiency is up to 90.6%, occurring when the input voltage is 1.3 V, the output voltage is 1.8 V, and the load current is 50 mA. According to the measured results, the proposed converter can start up successfully with a 0.43-V input voltage. Then, the input voltage can be further lowered to 0.22 V after startup. Moreover, both the efficiency and the output voltage ripple are improved with the proposed APIC method. Furthermore, a two-step startup procedure, which does not require any extra startup assist circuit, is proposed.
Sponsorship	IEEE Power Electronics Society
Starting Page	1956
Ending Page	1965
Page Count	10
File Size	1356569
File Format	PDF
ISSN	08858993
Volume Number	30
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inductors Voltage control Green products Voltage measurement Fuel cells Capacitors Delays startup Adaptive peak-inductor-current (APIC) boost dc–dc converter discontinuous conduction mode (DCM) power management pulse-frequency modulation (PFM) control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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