Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2006-06-13
2006-06-13
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C327S379000
Reexamination Certificate
active
07061301
ABSTRACT:
A method and an apparatus for implementing a semiconductor switch multi-stage drive circuit. The disclosed method and an apparatus reduce losses in a semiconductor switch when it is turned from an off state to an on state or from an on state to an off state. The reduction in losses is achieved without influencing the dv/dt across the semiconductor switch during a first time period while the semiconductor switch is switching. This reduction in losses is therefore achieved with very little increase in the noise generated due to rapid dv/dt during the first time period when the semiconductor switch is switching. The configuration of the circuitry to achieve this reduction in switching losses is such that benefits are less sensitive to manufacturing tolerances and temperature effects than alternative semiconductor switch drive schemes to achieve similar results.
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Blakely , Sokoloff, Taylor & Zafman LLP
Nu Ton My-Trang
Power Integrations, Inc.
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