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(ADuM3223/4223)To calculate the power consumtion.

Question asked by donadona999s on Aug 18, 2015
Latest reply on Aug 19, 2015 by donadona999s

Hi!

 

I have 4 questions about ADUM3223/4223.

I want to calculate the power consumption exactly

because our system 's power consumtion  would be high

so we want to decide which to use ADUM3223 or ADUM4223.

 

(1)====================================================================

I made a document to calculate the power consumption.

Could you tell me the way to think about this are correct or not?

***I attach a document.***

And I also understand that the power consumtion at the control curcuit

will be low compared with driver part.

But I want to calculate power consumtion at the control curcuit too.

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(2)====================================================================

At the data sheet Rev.E,

IDDO=(IDDO(D) + (0.5) * CLVDDO) * (2f - fr) + IDDO(Q)   from P.17

What is "CLVDDO"?

Is it typo?

Is it "CL * VDDO" ?

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(3)====================================================================

At the data sheet Rev.F P17,

What is RDSON_P and RDSON_N?

Is it the On-Resister at P-MOS and N-MOS in the ADUM3223?

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(4)====================================================================

At the data sheet Rev.F P17,

Why do you double the PDISS_IC?

Because ADUM3223 has two channel?

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Thank you.

Best regards.

Kawa

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