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A Gate Driver for Synchronous Buck Converter with Normally On Semiconductor Switches

Parashar, Sanket and Basu, Kaushik (2017) A Gate Driver for Synchronous Buck Converter with Normally On Semiconductor Switches. In: 2016 IEEE INTERNATIONAL CONFERENCE ON POWER ELECTRONICS, DRIVES AND ENERGY SYSTEMS (PEDES, DEC 14-17, 2016, Trivandrum, INDIA.

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Official URL: http://doi.org/10.1109/PEDES.2016.7914418


Synchronous buck converters with normally off MOSFETs are widely used for point of load converters. Recently introduced, normally on, high electron mobility, power devices shown to have excellent switching characteristics with very low on state voltage drop. To drive a normally on MOSFET, a gate drive with bipolar voltage capability is required. Generation of a bipolar voltage from a positive voltage source, requires switched mode power converters leading to reduction in efficiency with an increase in footprint and cost. This paper presents a circuit that will translate the unipolar voltage produced by a standard gate driver to an adjustable bipolar voltage along with bootstrap technique to drive both top and bottom normally on MOSFETs in a synchronous buck converter. A detailed analysis and design of the proposed circuit is presented. Experimental results confirm the operation of the proposed circuit.

Item Type: Conference Proceedings
Publisher: IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Additional Information: Copy right for this article belongs to the IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Trivandrum, INDIA, DEC 14-17, 2016
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 23 Sep 2017 04:55
Last Modified: 23 Sep 2017 04:55
URI: http://eprints.iisc.ac.in/id/eprint/57896

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