Ultra Step-Up DC-DC Converter With Reduced Switch Stress

In this paper, a new single-switch nonisolated dc-dc converter with high voltage transfer gain and reduced semiconductor voltage stress is proposed. The proposed topology utilizes a hybrid switched-capacitor technique for providing a high voltage gain without an extreme switch duty cycle and yet ena...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2010-09, Vol.46 (5), p.2025-2034
Main Authors: Fardoun, A A, Ismail, E H
Format: Article
Language:English
Subjects:
Capacitors
Converters
Costs
DC-DC power conversion
DC-DC power converters
Electric potential
Gain
high step-up converter
High voltages
Low voltage
MOSFET circuits
pulsewidth modulated
Semiconductor diodes
Semiconductors
Stress
Stresses
switched-mode power supplies
Switches
Switching converters
Topology
Voltage
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Summary:In this paper, a new single-switch nonisolated dc-dc converter with high voltage transfer gain and reduced semiconductor voltage stress is proposed. The proposed topology utilizes a hybrid switched-capacitor technique for providing a high voltage gain without an extreme switch duty cycle and yet enabling the use of a lower voltage and R DS-ON MOSFET switch so as to reduce cost, switch conduction, and turn-on losses. In addition, the low voltage stress across the diodes allows the use of Schottky rectifiers for alleviating the reverse-recovery current problem, leading to a further reduction in the switching, and conduction losses. The principle of operation and a comparison with other high step-up topologies are presented. Two extensions of the proposed converter are also introduced and discussed. Simulation and experimental results are also presented to demonstrate the effectiveness of the proposed scheme.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2010.2058833