Other Parts Discussed in Thread: CSD17551Q3A, CSD17578Q3A,
Hi
please help check the schematic.
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Hi
please help check the schematic.
Hi, Star,
Thanks for following the BQ25703A EVM schematic closely, however, I found two places different from the reference design.
1) ILIM_HIZ is connected to CMPOUT. Current configuration allows HIZ operation when battery reaches 12.6V, but 3A current limit is disabled. (Suggest tying CMPOUT to ILIM_HIZ by 10kohm, adding 2Mohm resistor between CMPIN and CMPOUT for hysteresis.)
2) PGND and GND are connected by a Ferrite Bead. Suggest using a zero-ohm component such as a net-tie copper trace.
Is it possible that M6 is damaged without any input current limit? CSD17578 is very similar to CSD17551. I don't think this is an issue.
Regards,
Tiger