This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS40200-HT: High Temperature Buck without Suitable PFET

Part Number: TPS40200-HT

Hello,

I am interested in using this high temperature buck controller for an application that needs to power components at 180C ambient (its an R&D project for a manufacturing company). The TPS40200-HT datasheet, however, is a gate driver for a PFET. I have not been able to find any PFETs that will be able to survive a 180C ambient. Is this truly the case? Because then I'm wondering why the controller goes up to such high temperatures if none of the FETs can go that high anyways.

If no such PFETs exist, is there a recommended solution or reference design in which TI has successfully used this controller at temperatures that high?

Thanks in advance for the help.

Best regards,

Theo

  • Hey Theo,

    Unfortunately there are no reference designs for the TPS40200-HT that will have a PFET go up to that temperature.

    I will say that most of the HT family is by customer request and thus if this part was requested, this would make it likely the customer had a PFET that could go to 210 C.

    Unfortunately, I do not know what specific PFET a customer would use.

    I will say with a bit of googling I was able to find a PFET that could take 230 C (XTR2N0307)

    Note that I have never used this device nor do I necessarily recommend it for your design. I am simply using this as an example of there are PFETs that can take 210 C.

    Thanks,

    Daniel