NDLI: Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage

Content Provider	IEEE Xplore Digital Library
Author	Seungbum Lim Ranson, J. Otten, D.M. Perreault, D.J.
Copyright Year	1986
Abstract	This paper presents a merged-two-stage circuit topology suitable for either wide-range dc input voltage or ac line voltage at low-to-moderate power levels (e.g., up to 30 W). This two-stage topology is based on a soft-charged switched-capacitor preregulator/transformation stage and a high-frequency magnetic regulator stage. Soft charging of the switched capacitor circuit, zero voltage switching of the high-frequency regulator circuit, and time-based indirect current control are used to maintain high efficiency, high power density, and high power factor. The proposed architecture is applied to an LED driver circuit, and two implementations are demonstrated: a wide input voltage range dc-dc converter and a line interfaced ac-dc converter. The dc-dc converter shows 88%-96% efficiency at 30-W power across 25-200-V input voltage range, and the ac-dc converter achieves 88% efficiency with 0.93 power factor at 8.4-W average power. Contributions of this paper include: 1) demonstrating the value of a merged two-stage architecture to provide substantial design benefits in high-input voltage, low-power step down conversion applications, including both wide-range-input dc-dc and line-input ac-dc systems; 2) introduction of a multimode soft-charged SC stage for the merged architecture that enables compression of an 8:1 input voltage range into a 2:1 intermediate range, along with its implementation, loss considerations, and driving methods; and 3) merging of this topology with an resonant transition discontinuous-mode inverted buck stage and pseudocurrent control to enable step-down power conversion (e.g., for LED lighting) operating at greatly increased frequencies and reduced magnetics size than with more conventional approaches.
Sponsorship	IEEE Power Electronics Society
Starting Page	805
Ending Page	816
Page Count	12
File Size	901749
File Format	PDF
ISSN	08858993
Volume Number	30
Issue Number	2
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	Capacitors Voltage control Switches Light emitting diodes Driver circuits Switching circuits Reactive power switched capacitor AC–DC buck dc-dc high-frequency soft-charging
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A switched-capacitor driver for power LEDs

A transformerless galvanically isolated switched capacitor LED driver

Merged Two-Stage Power Converter With Soft Charging Switched-Capacitor Stage in 180 nm CMOS

A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC–DC Converter

Two-stage power conversion architecture for an LED driver circuit

A switched capacitor, inductorless DC to AC voltage step-up power converter

Electrolytic capacitor-less AC/DC LED driver

Merged two-stage power converterarchitecture with softcharging switched-capacitor energy transfer

Stacked Switched Capacitor Energy Buffer Architecture

Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage

Similar Documents

A switched-capacitor driver for power LEDs

A transformerless galvanically isolated switched capacitor LED driver

Merged Two-Stage Power Converter With Soft Charging Switched-Capacitor Stage in 180 nm CMOS

A High-Efficiency Wide-Input-Voltage Range Switched Capacitor Point-of-Load DC–DC Converter

Two-stage power conversion architecture for an LED driver circuit

A switched capacitor, inductorless DC to AC voltage step-up power converter

Electrolytic capacitor-less AC/DC LED driver

Merged two-stage power converterarchitecture with softcharging switched-capacitor energy transfer

Stacked Switched Capacitor Energy Buffer Architecture

Two-Stage Power Conversion Architecture Suitable for Wide Range Input Voltage