MM9Z1_638 Current shunt filter capacitor recommand

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MM9Z1_638 Current shunt filter capacitor recommand

207 Views
a852013777
Contributor III

Hi Nxp Partner

Can we add 100nf capacitor on current shunt low pass filter for BCI issue?

We use 100nf on C62,C61,C63 and the insulation resistance result is out of range +/-15% when battery input is 50V by dc source.

If we change the dc soure from 50V to 80v, the insulation resistance measurement is within spec.

 We don't use 100nf on C62,C61,C63 and the insulation resistance result is within +/-15% on battery input (+50V by dc source).

Will we demage the mm9z1_638,if we add 100nf capacitor on current shunt low pass filter?

Do we set the lowest limit of voltage on spec? Could you give us som recommand?

a852013777_0-1713333861314.png

 

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4 Replies

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi,

I just want to inform you that I have asked our expert supporting the MM9Z1_638 to look at this question. He will answer likely at the beginning of next week.

Thank you for your patience.

BR, Tomas

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125 Views
a852013777
Contributor III

hi @TomasVaverka 

 

Do you have any update? thanks 

 

Br,

Mike Liang

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118 Views
TomasVaverka
NXP TechSupport
NXP TechSupport

Hi Mike,

I am very sorry for the delay in answering your question.

Unfortunately our expert supporting the MM9Z1_638 will apparently not be able to help with this MM9Z1_638 based BJB question, so I am currently in the process of finding another engineer familiar with it.

Thank you for your understanding and patience.

BR, Tomas

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151 Views
a852013777
Contributor III

Hi Tomas 

 

thanks,my email is mike.yh.liang@foxconn.com 

 

Br, mike

 

 

 

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