Boosting Technique for a Bi-Directional Switch in a Power Converter
AssigneeNXP B.V.
InventorsJan Dikken, Peter T. J. Degen
Life of this patent
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Abstract
A bi-directional switch for a power converter comprises first and second transistors (SW1, SW2) and a floating supply capacitor (C2) associated with the second transistor (SW2). The drive circuit and/or gate of the first transistor (SW1) is charged by the floating supply capacitor (C2) of the second transistor (SW2). The charging takes place at a predetermined moment in the switching cycle, and in particular at a moment in the switching cycle when the voltage across the bi-directional switch is substantially a minimum.
Claims14
A bi-directional switch for a power converter comprising first and second transistors and a floating supply capacitor associated with the second transistor, wherein a drive circuit and/or gate of the first transistor is charged by the floating supply capacitor at a predetermined moment in the switching cycle of the bi-directional switch.
Dependencies are inferred from the claim text.