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CSD17577Q5A: High internal resistance, charge dissatisfaction, discharge dissatisfaction内阻高、充不满电、放不满电

Part Number: CSD17577Q5A


There was an anomaly in the manufacturing process of our company yesterday. During the charging and discharging cycle of battery products, defects occurred within three cycles: high internal resistance, insufficient charge and insufficient discharge, and the number of defects was 18pcs. The preliminary determination was that MOS of the charging module was damaged.


We hope to get your technical analysis: 1. Confirm the internal structure of the bad MOS, the performance of the unit test, 2. Possible reasons for such damage. Hoping for an answer