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A reliable switching power supply protection circuit

  • 2013-09-22
  • 91.72KB
  • Points it Requires : 2

A reliable switching power supply protection circuit uses an integrated switching regulator SG3525A to make a pulse width modulator. When performing overvoltage and overcurrent protection, the usual practice is: the voltage or current signal is added to the shutdown terminal 10 pin of SG3525A after appropriate processing. When the extreme signal voltage reaches the cut-off value voltage, the output will be blocked within 200us to cut off the power output.

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