access icon openaccess Leakage current reduction for a double-leg boost converter by switching transition synchronisation

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 22/06/2018, Accepted 31/07/2018, Published 22/01/2019

With wide-bandgap transistors, the leakage current through the parasitic transistor to heat sink capacitance is increased with the operation at higher switching transition voltage slopes. This study presents a modulation synchronisation method for a double-leg boost converter to reduce these leakage currents. Having a similar leakage current path, the transistors turn-on transition of one leg is synchronised on the turn-off transition of the second leg.

Inspec keywords: switching convertors; wide band gap semiconductors; heat sinks; transistors; leakage currents

Other keywords: turn-off transition; wide-bandgap transistors; double-leg boost converter; transition synchronisation; heat sink capacitance; transistor turn-on transition; higher switching transition voltage slopes; leakage current path; current reduction; parasitic transistor; modulation synchronisation method

Subjects: Semiconductor devices; Power electronics, supply and supervisory circuits; Power convertors and power supplies to apparatus

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