Can the MC33775A measure negative voltages, such as -2.78V, -3.33V?

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Can the MC33775A measure negative voltages, such as -2.78V, -3.33V?

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songhongyujl
Contributor I

I have two questions.
1. In the MC33775A datasheet, "Supports bus bars with ±5 V input voltage",can it be interpreted that it can measure negative voltage (such as -2.76V,-3.33V)?
2. What is the maximum number of MC33775A chips that can be connected in a daisy chain?
Thanks!

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ErikaC
NXP TechSupport
NXP TechSupport

Hello,

It is possible that the voltage across the busbar is negative. The cell terminal inputs (CTx pins) of the MC33775A can handle negative voltages of up to −5 V. The cell balancing inputs (CBx pins) however can handle only −0.3 V.

MC33775A supports up to six daisy chains and 62 nodes per chain, please find more information in Application note AN13281

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ErikaC
NXP TechSupport
NXP TechSupport

Hello,

It is possible that the voltage across the busbar is negative. The cell terminal inputs (CTx pins) of the MC33775A can handle negative voltages of up to −5 V. The cell balancing inputs (CBx pins) however can handle only −0.3 V.

MC33775A supports up to six daisy chains and 62 nodes per chain, please find more information in Application note AN13281

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songhongyujl
Contributor I

Thanks!!

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