Other Parts Discussed in Thread: BQ40Z50-R1
To whom it may concern:
We are developing a battery with build-in charger with the bq25700A chip. The fuel gauge is bq40z50-r1. The input voltage is 15V, and output voltage 12V~16.8V(4S1P Li-Ion Battery). We did the EMI test and failed.
We tried two versions of schematics/layouts, both follow the TI design:
1. The schematic on the bq25700A datasheet;
2. the schematic on the bq25700AEVM TI design.
The layouts was just follow the general rules.
Do you guys have any suggestions to decrease the EMI? Our current schematics(based on the EVM design) is attached.
Thank you very much!
Chen Jia
