S12ZVMC128 Overcurrent protection

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

S12ZVMC128 Overcurrent protection

594 Views
xiangxu860
Contributor II

I use S12ZVMC128  and  I have some problems with the overcurrent protection. And I think it maybe the bug of this MCU.

I use the Current Amplifier 0  and Comparator 0 , and I set '0'  to the GOCA0  . when overcurrent condition come out , the highside MOS will turn off , and the lowside MOS will turn on .

the problem is that there is no deadtime insertion (4us) between  MOSFET swichs . and in normal condition ,there is deadtime insertion .

what can I do to resolve this problem ?

khumphri

Mandar‌Deactivated userdhavalRHinnenjimtrudeauMartinvladcenteaRChapman

Tags (1)
0 Kudos
2 Replies

420 Views
RadekS
NXP Employee
NXP Employee

Hi Xiang,

I forwarded your report to the responsible design engineer.

Unfortunately, he is now out of office and he should return next week.

I will keep you informed.

I hope it helps you.

Have a great day,
Radek

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

0 Kudos

420 Views
RadekS
NXP Employee
NXP Employee

Hi Xiang,

The responsible designer engineer confirmed that deadtime insertion is not used between MOSFET swichs in the case of overcurrent protection emergency shut-down.

He will look at that topic (how to minimize the chance for FET transistor damaging) and answer as soon as possible.

 

I suppose, that the GOCA0=1 is not a possible/preferred/optimal solution for your application. Correct?

I hope it helps you.

Have a great day,
Radek

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

0 Kudos