MP2696A NTC resistor calculation negative result

Battery Management
1

I am using the formulas from page 29 in the datasheet to calculate the resistors for the NTC but my calculation for RT2 is a negative value? is this correct?

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Should I just use the absolute value and use a 1.37MΩ resistor or am I doing the calculations wrong?

2

Hi @George.p.Marshall,

Can you verify the values of RNTC hot and cold? if still the same, please adjust the Vcold to 68% and should be fine. with 68%: Rt1 = 7.35k and RT2 = 74.04kohm.

Thank you
Saurabh