Part Number:BQ25601D
Problem Description:
BQ25601D In the current schematic hardware test, it is found that after setting the register 02 value, it will return to the default value, which can be seen from charging current and reading register value.
Software settings and testing methods:
1. Software startup initialization set up a separate register 02 bits 0x87.
Test phenomena:
Within 15 seconds before the charger works, the charging current is 340 mA and the register value is 87.
After charging 15S, the charging current suddenly changes to 1.1A and the register value is A2.
2. Set up register 02 separately after the software works normally. The test phenomena are the same as above.
3. Software boot initialization setting register 00-07 (02 is 0x87), the test phenomena are the same as above.
4. Set up register 00-07 (02 is 0x87) after the software works properly. The test phenomena are the same as above.
NOTE
No problem with batteries
At this point, the battery is not full, it is empty. , not in CV mode.
Is there any problem with the schematic diagram? Please give me some advice. Thank you !