Other Parts Discussed in Thread: BQ25895,
Hi everyone,
I posted a similar article a few months ago asking why my BQ25895 IC won’t charge. I’ve redesigned my PCB for my application to follow better design principles, however I still cannot get the cells to charge properly. Would someone be able to help me out? I have provided the fault register reads below to help debug the issue. I did briefly short B+ to GND which sent a small spark flying, but there appears to be no SYS to GND shorts or anything like that as far as I can see. I have purchased another IC to replace just in case.
What is most weird to me is that register 0x0B states that the cells are fast charging and power good pin is high, however no current is flowing into the battery pack. I am using a 1s2p setup. Any help would be appreciated as I’ve been banging my head against a brick wall for the past 3 hours trying to get this to work.
BQ25895M Fault Registers
REG00 0x7a
REG01 0x6
REG02 0x31
REG03 0x3a
REG04 0x20
REG05 0x13
REG06 0x5e
REG07 0x9d
REG08 0x3
REG09 0x44
REG0A 0x93
REG0B 0x36
REG0C 0x0
REG0D 0x54
REG0E 0x53
REG0F 0x53
REG10 0x3e
REG11 0xe0
REG12 0x0
REG13 0x3a
REG14 0x39
Cheers,
Ben
