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Measured waveform of boot capacitor short circuit and open circuit of buck circuit

2022-07-29 07:44:00 【ltqshs】

capacitance C14 Fault caused by short circuit
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The text description corresponds to the waveform diagram in the following figure .

5V0_MOS Voltage waveform
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VDD18 wave form

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VCC33 wave form
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capacitance C14 Open circuit waveform , That is, there is no output , It may be internal ESD Only the reverse voltage drop of diode 0.9V Left and right output voltage drop .
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Normal output 5V0_MOS Voltage waveform
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