The power management chip of the mobile phone charger can determine whether it works normally by detecting its output voltage, current, waveform and other parameters. The following is the specific test method:
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- Use an electric meter to test the resistance of the inductor and the ground: if the meter drops after the resistance value rises to prove that the power management chip is good, on the contrary there is a problem.
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- Check the voltage of the FET G pole: If the resistance value is not the same, you can basically confirm that the power management chip is faulty.
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If you need a more professional test, it is recommended to send the charger to a professional laboratory for detailed testing and analysis.