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Oscilloscope-based automatic finder for locating high power dissipation areas in switch-mode power supply (SMPS) switching devices
Oscilloscope-based automatic finder for locating high power dissipation areas in switch-mode power supply (SMPS) switching devices
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机译:基于示波器的自动查找器,用于在开关模式电源(SMPS)开关设备中定位高功耗区域
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摘要
A method and apparatus for identifying and analyzing high power dissipation peaks across a switching device. The method and apparatus include processing voltage waveform data associated with a switching device to determine switching edge and slope parameters for each of a plurality of switching cycles, and identifying those portions of the voltage waveform data associated with switch state transition portions of the plurality of switching cycles. For a plurality of the identified switch state transition portions, respective peak power levels are calculated using portions of the voltage waveform data temporally corresponding to the plurality of identified switch state transitions, and portions of current waveform data associated with the switching device temporally corresponding to the plurality of identified switch state transitions.
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