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FD_aurix
Level 5
Level 5
100 sign-ins 100 replies posted 5 solutions authored

Hi All

I'm facing to a strange behaviour using the ATOM. I've set the channel 0 of ATOM1 as reference and using the following channel (CH1,2,3,4) to create multiple PWM signal using CM0 and CM1 as up and down edge. so far so good.

 

 I'll do an additional update (via force update signal) and here I've a spike  

if I change the CM1 from 0 to 1 or period-1 this spike is no more present.

 

any idea? HW issue?

 

Below the setting of the PWM for the reference anc CH1, other CH are the same as CH1

FD_aurix_0-1649233773664.png

 

FD_aurix_1-1649234113077.png

 

 

5 Replies
FD_aurix
Level 5
Level 5
100 sign-ins 100 replies posted 5 solutions authored

little update, the CH4 works different because the DTM is enabled for this channel that probably filter this spike for some reason, others channel do not have the DTM enabled

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FD_aurix
Level 5
Level 5
100 sign-ins 100 replies posted 5 solutions authored

Hi

Anyone could give some feedback/ideas?  I've done a short test making the same configuration with TOM channels and here seems not present 😕

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TBencher
Level 6
Level 6
25 solutions authored 25 likes received 5 questions asked

Hi FD_aurix,

GTM is always fun 🙂

Please could you give me a little bit more detail on what TC and board you are using?

Best regards,

TBencher

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FD_aurix
Level 5
Level 5
100 sign-ins 100 replies posted 5 solutions authored

Hi TBencher

 

Not so fun... when it is driving a power bridge..   Looking at the errata sheet there are some similar issue but in different conditions.. 

 

BTW it is a TC377 and the board is the relative Triboard. I've already contacted the FAE and he is checking with the core design team.

 

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TBencher
Level 6
Level 6
25 solutions authored 25 likes received 5 questions asked

Hi FD_aurix,

ok then let's wait for the FAE and the core design team.
If they have no clue, I will start investigating it 🙂

Best regards,

TBencher

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