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Part Number: BQ78350-R1
The BQ78350-R1 is in precharge Mode, the Precharge FET is ON but the CHG FET left-over ON. I have attached picture, Why the AFE doesn't oppenned the CHG FET ?
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In reply to Matt Sunna:
I had the PCH_EN enabled
In reply to LOIC REBOUSSIN:
In Section 5.2 of the TRM for this device, there is a table showing that this bit should be set to zero for the PCHG FET to be used instead of the CHG FET:
Can you try to set this to zero to see if it resolves the issue?
Hi Matt, This solution doesn't resolve my issue because this table are false, your colleague has confirmed that before
Follow this link :
Sorry for the delay - I needed to investigate a little more. You are correct that the TRM table does need to be updated. I will get this updated in the next revision of the document.
However, after looking more at your image of the Register screen, I am not sure why you say the CHG FET is enabled. I circled the CHG bit below which is green indicating the CHG FET is off. The xCHG bit indicates that charging is enabled which is correct since the device is pre-charging. It does not refer to the FET state.
I will tried to record a precharge scenario today,
I'll let you know
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