Mp2625b不供电问题（5v电脑电压输出触发断电保护）

Battery Management
1

使用锂电池：523450-1000mAh

表象：设备插入电脑Type-C接口瞬间，产生一个大约6.3V的瞬间尖峰，触发电脑断电保护。

出现问题：产品连接电脑（5V电压输出）使用Type-C接入的瞬间会看到看到产生一个尖峰，导致触发电脑过压保护，电脑无法给产品供电、给电池充电。

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想和原厂、大家请教是否有什么改进方法可以根本解决该问题

2

Hi @ivy.c ,

Can you please provide the following items:

  1. Schematic (or confirm if your schematic is same as figure 11 typical application in the datasheet).
  2. Your input voltage range and output voltage/current.
  3. Your system load.
  4. Waveform of input voltage, input current, SW pin voltage, inductor current, and output voltage.

My initial assumption is that there’s excess inrush current, so a quick fix would be to increase the input capacitance.

Thanks,
Rubas