My questions about EVAL-L9963 are following: Does it work with NiMH battery chemistry? Can it support each individual channel voltages of up to 14.4V nominal voltages (voltages may vary as high as 18.8V)? Can it perform passive and/or active balancing?

VVasy.1 · ‎2020-11-19

I am working on BMS type of system that will recondition, balance, and maintain NiMH HEV batteries. I'm considering to use L9963 IC and its accompanying evaluation board EVAL-L9963 for my prototype. My system consists of nickel-metal hydride battery with 14 battery blocks connected in series with each block at 14.4 V nominal voltage(total nominal battery pack voltage about 202V) as shown in the figure below.

Peter BENSCH · ‎2020-11-19

The website of the L9963 mentiones the measurement range per cell (per tap), so your 14.4V is way outside the limits:

16-bit voltage measurement with maximum error of ±2 mV in the [1.7 – 4.7] V range, in whole operating temp range

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/Peter

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Cristiana SCARAMEL · ‎2020-11-27

Hello @VVasy.1 welcome to the ST Community.

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