Other Parts Discussed in Thread: BQ25611
Hello,
Dear Sirs or Madams,
I’m trying to calculate the TS resistor network for BQ25611 (page 23 in DS) for a Fey Battery PA-UL-LNB46.R001, but I’m getting negative values for R2. Could you please check it?
My questions:
- Which exact value I have to use for V T1% and V T5 % in equation on page 23 for RT2? There are FALL and RISE values in the datasheet.
- Using parameters above, RT2 becomes negative. Is there any spread sheet for calculation for that charger device?
T1=0°C T2=10°C T3=45°C T5=60°C
NTC 10kOhm, B-value 25°C/85°C=3980K
R NTC T1 (0°C)=33,932K
R NTC T5 (10°C)=2,460K
Vregn=4,7V
V T1 % (assumption 73%)=3,384V
V T5 % (assumption 33,5%)=1,57V
Best Regards
Vitali
Datasheet for battery pack:
