A method of extracting switching loss from a high efficiency MOSFET based half bridge converter

Finn, David, Walker, Geoff, & Sernia, Paul (2003) A method of extracting switching loss from a high efficiency MOSFET based half bridge converter. In Duke, R. (Ed.) Australasian Universities Power Engineering Conference, AUPEC'03, University of Canterbury, Christchurch, New Zealand.


The measurement of losses in high efficiency / high power converters is difficult. Measuring the losses directly from the difference between the input and output power results in large errors. Calorimetric methods are usually used to bypass this issue but introduce different problems, such as, long measurement times, limited power loss measurement range and/or large set up cost.

In this paper the total losses of a converter are measured directly and switching losses are exacted. The measurements can be taken with only three multimeters and a current probe and a standard bench power supply. After acquiring two or three power loss versus output current sweeps, a series of curve fitting processes are applied and the switching losses extracted.

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ID Code: 63573
Item Type: Conference Paper
Refereed: Yes
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2003 [please consult the authors]
Deposited On: 11 Dec 2014 22:39
Last Modified: 11 Dec 2014 22:39

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