Other Parts Discussed in Thread: BQ25150, BQ25120
Hi Team,
We use a BQ25101YFPR to charge our smartwatch battery.
The smartwach is currently passing certifications.
To pass the certification about electrical safety, we need to disable the charge above 45°C (not 60°C as it is set in the BQ).
So is it possible to adjust TS thermistor to modify the lower and upper-limit temperature charge ?
We wolud like to turn off the charge below 15°C and aboce 45°C, but to do that we need a thermistor with a B Parameter arround 7000 K and a resistance of 13 kOhms at 25°C.
However this thermistor does not exist, So is it possible by putting in parallel or in serial several thermistors to create theses value of B and resistor ?
Otherwise I found an other thermistor from Panasonic ERT-J0ER682H with a B of 4300 K and a Resistance of 6,8 kOhms at 25°C, from my calcul i found it will turn off the the charge at 45°C. But how it will change the lower-limit charge of the BQ ?
Best Regards,
Boris.
We use a BQ25101YFPR to charge our smartwatch battery.
The smartwach is currently passing certifications.
To pass the certification about electrical safety, we need to disable the charge above 45°C (not 60°C as it is set in the BQ).
So is it possible to adjust TS thermistor to modify the lower and upper-limit temperature charge ?
We wolud like to turn off the charge below 15°C and aboce 45°C, but to do that we need a thermistor with a B Parameter arround 7000 K and a resistance of 13 kOhms at 25°C.
However this thermistor does not exist, So is it possible by putting in parallel or in serial several thermistors to create theses value of B and resistor ?
Otherwise I found an other thermistor from Panasonic ERT-J0ER682H with a B of 4300 K and a Resistance of 6,8 kOhms at 25°C, from my calcul i found it will turn off the the charge at 45°C. But how it will change the lower-limit charge of the BQ ?
Best Regards,
Boris.
