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Battery Charger + Fuel Gauge

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HI,

Iam new to fuel gauge monitoring ..  i need to design battery charger + monitoring circuit for handheld product.

With help of TI FAE , i have narrow down  following part for my application.  with basic view of datasheets i drafted block level for battery charger + fuelguage

monitoring circuit. 

Input Specification:

Li-ion : 3.7v / 2200mA (4S) = 14.8v

Input : 15V  DC Adaptor

i have following question

1.  Concept diagram is ok ?

2. what are the parameter i need to look for before start evalution?

3. part no selected is ok ? since as per bqz2045 evm using cell balancing bq29412

 which NRND so we selected bq 7718xy..

4.Any other parameter i need to look ? for both charger and fuelgauge.

Regards

Anbu UB


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