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Motor Control ICs Forum Discussions

Fergus_wang
Level 1
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Level 1

we found the ADC accuracy of IRMCF183M is very low. the following data is   DC bus  ADC sampling data. we can't find any explanation about ADC accuracy in datasheet.  so i want to know the  ADC accuracy of DC BUS ADC sampling results?

 

100V

AD sampling voltage

200V

AD sampling voltage

300V

AD sampling voltage

 

ADC(Cnt)

(V)

ADC(Cnt)

(V)

ADC(Cnt)

(V)

1#

613

84

1373

189

2124

292

2#

718

99

1427

196

2148

295

1#

615

85

1366

188

2128

292

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1 Solution
LinGuohui
Moderator
Moderator 25 solutions authored 50 replies posted 50 sign-ins
Moderator

Hi Fergus,

This doesn't have to be the problem with ADC. There are many factors that affect the ADC results: Your PCB layout, shunt resistance select and solder installation, etc. 

For using our controller IMCF183, this product are obsolete, not much support remains anymore.

We are recommended to you our new iMOTION 2.0 with IMC302Acontroller, for your new design.

Thanks!

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1 Reply
LinGuohui
Moderator
Moderator 25 solutions authored 50 replies posted 50 sign-ins
Moderator

Hi Fergus,

This doesn't have to be the problem with ADC. There are many factors that affect the ADC results: Your PCB layout, shunt resistance select and solder installation, etc. 

For using our controller IMCF183, this product are obsolete, not much support remains anymore.

We are recommended to you our new iMOTION 2.0 with IMC302Acontroller, for your new design.

Thanks!

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