Switching power converter with reduced switching losses

Details Switching power converter with reduced switching losses Switching power converter with reduced switching losses

2007-12-14

2010-10-05

Patel, Rajnikant B (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S434000, C363S127000

Reexamination Certificate

active

07808299

ABSTRACT:
A switching power converter has at least one electronic power switch. To minimize switching losses and optimize efficiency, the gate drive voltage level used to drive the electronic power switch is optimized. In an aspect, a digital controller generates optimizes the gate drive voltage using efficiency optimization algorithms, which in an aspect are programmed in the digital controller. In accordance with an aspect of the present disclosure, the switching power supply has at least two electronic power switches coupled in parallel. Optimization algorithms are used to determine the optimum number of switched electronic power switches that are actively being switched at a given time in order to achieve optimized efficiency for condition changes, such as input voltage variation, load and environmental temperature changes. In an aspect, the algorithms are programmed in a digital controller chip. In an aspect, both gate drive voltage level and the number of electronic power switches being actively switched at a given time are optimized.

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Wisam Al-Hoor et al: “Adaptive Variable Switching Frequency Digital Controller Algorithm to Optimize Efficiency” Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium O N, IEEE, PI, May 1, 2007, pp. 781-784, XP0311813777 ISBN: 978-1-4244-0920-44.

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