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CSD87350Q5D: TGR to PGND rating

Part Number: CSD87350Q5D

Hi team,

We're investigating a FA case and checking the ratings of CSD87350Q5D, but there is no TGR to PGND rating from datasheet.

Could you please provide the absolute max rating of TGR to PGND and comment about the waveform? Thanks for your support!

We've applied the low-inductance probe technique to get the waveforms.


Best regards,
Sam Ting

 

  • Hi Sam,

    Thanks for the inquiry. The TGR is internally connected to VSW which is the drain of the low side FET. Therefore, the absolute maximum voltage rating from TGR to PGND is the minimum BVDSS for the sync FET which is 30V. Based on the waveforms, I'm not seeing any over voltage but it looks like you're not getting enough VGS for the high side FET to be fully enhanced: VGS = TG - TGR = 18.2V - 14.8V = 3.4V. The minimum VGS for tthe CSD87350Q5D is 4.5V. I'm going to close this thread and we can continue this on regular email.