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Rad-hard regulator

user4213469
Prodigy 10 points
Other Parts Discussed in Thread: TPS62730
Hi,
Our specific project consists in developing a gamma resistant version of our measurement system for sterilization purpose.
We are looking for a DC to DC regulator that could endure once a 25-40 kGy (2.5Mrad, 4Mrad) radiation and still works after that. Our actual component is not working after irradiation.

We have very low current sink in our electronics (20mA max) and we typically need 2V regulated from a lithium battery (2.7 - 3.3V).

Have you reference that could suit our specification?

Actually we use TPS62730, so this device does it use a technology adapted for irradiation ?

We saw that you have space component catalogue which reach 300Krad maximum. Unfortunately, the package of these device are too big for our application. Does it exist some smaller package that exceeds the value of 300Krad ?

Thanks for your answers.

 

 

 

  • 0
    TI__Guru**** 191445 points

    I think you will be limited to the devices in the space catalog.  I know for a fact that our regular commercial catalog are not tested or certified for radiation hardness.  Can you provide your requirements, and what device you looked at that was too big?

  • 0 in reply to JohnTucker
    TI__Genius 17035 points

    Typically, TI does not test or characterize any products (incuding space products) above 300 krad. 

    Is the part powered while it is being irradiated and what is your dose rate?   It is unlikely that we have any power parts that would survive >1 Mrad while powered up, especially at dose rates > 1 rad/s.