S912ZVML128 Desaturation Error Issue

[dannydeng]

Dears,

    I am designing in a EOP system used S912ZVML128 . I tested the prototype, found the desaturation error trigged not steady. Here is my  testing result,

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Ids / A         Vds / V                           Time delay after tBLANK / ns        Desaturation Error Flag Set?

10                  2.55                                             75                                                 Yes

20                  3.1                                               188                                                No

26                  2.2                                                98                                                 No

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t BLANK is 2 us.

Can anybody give me any advice?

Thanks and Best Regards,

Ray Deng

[alejandro_cervantes]

Hello Ray,

I think tBLACK time is not set correctly

Could you tell me which is your core clock frequency and which is the values for register GDUCTR_GBKTIM2[3:0].

Also, how are you setting the test?
Could you share the part of the schematic where you are doing the test.

Thanks and best regards,

Alejandro