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I'm using INA219 to read the hold system current like the schematic System schematic

The problem line in the DC-DC converter. When I use IC MP2315 DC-DC converter, INA219 seem like just read the off period of PWM switch and it value is 3mA when I read form Serial Plotter. Yesterday I changed MP2315 to LOD, value is 300mA which is acceptable. However, LOD dose not supply enough current for servo. So if I continue use MP2315, how can I read current when using INA219. If it is impossible, what should I do? Thanks in advance

GiaHuy Nguyen
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    Your question is not very clear. Are you trying to read the input current to the DC-DC converter? Based on your diagram, you are putting the INA219 between the input voltage source and the DC-DC converter. Please re-write your question in a clearer manner. – Prathik Prashanth Jun 17 '21 at 04:55
  • Add a big capacitor after the DC-DC converter – Damien Jun 17 '21 at 05:01

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