Dear In-charge person.
About BQ25600D, we are considering R1/R2 around NTC, with referring to section 8.3.7.5.
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Dear In-charge person.
About BQ25600D, we are considering R1/R2 around NTC, with referring to section 8.3.7.5.
Hi Takashi,
A negative value means that the temp range and/or thermistor Beta are not compatible with the charger's VTx percentages. You have the following options:
1. Try to find a different thermistor with different Beta that works.
2. Use a gauge and ADC IC and host processor instead of charger to monitor battery temp and control charge turn off.
2. Change T1=2℃ and T5=46℃ as this seems to be the max for your thermistor.
Regards,
Jeff