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Desaturation detection circuit for use between the desaturation detection input of an optocoupler and the output of a power switching device
Desaturation detection circuit for use between the desaturation detection input of an optocoupler and the output of a power switching device
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机译:在光耦合器的去饱和检测输入和电源开关设备的输出之间使用的去饱和检测电路
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摘要
A desaturation detection circuit for use between the desaturation detection input of an optocoupler and the output of a power switching device, the desaturation detection circuit comprising: a threshold setting element having an input and an output, the input for connection to the output of a power switching device via one or more diode(s), the threshold setting element being arranged to set a threshold voltage at the input at which the threshold setting element will provide an output at the output of the threshold setting element when the input voltage is exceeded, and a detector having an input connected to the output of the threshold setting element and an output connectable to a desaturation detection input of an optocoupler, the detector being arranged to detect an output at the output of the threshold setting element and in response to provide a control signal at the output of the detector for the desaturation detection input to trigger a desaturation routine in the optocoupler.
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