Current value measured from ISENSE pins

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Current value measured from ISENSE pins

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NewStarter
Contributor II

Hi Experts,

    I have been struggling an issue on RD33771-48V EVB for few days. I read current value thru multilink-FX and got a number: 409 (please see attached) . but the current meter shows current flow is 2.39A

Can you help me to clarify how 409 corresponding to 2.39A?

BRs

 

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi KS,

You have to to multiply this raw ADC value by the resolution which is 6mA when using a 100μΩ shunt resistor.

Capture.JPG

So the raw value of 409 multiplied by 6mA results in ~2.45A:

409 x 0.006A = 2.45A

Best regards,

Tomas

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NewStarter
Contributor II

hi Thomas,

    one more question, I'm reading temperature via NTC on RD33771 board and got a number '9376'

is it also multiply by 6?(but not make sense). 

Please help me to convert it to actual temperature, thanks.

BRs

KS

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2,091 Views
NewStarter
Contributor II

Got it, Thanks Thomas.

BRs

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