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DRV8301-Q1: Hi-rel DRV8301 without thermal shut down

Part Number: DRV8301-Q1
Other Parts Discussed in Thread: DRV8301, DRV8302, DRV8332-HT

Hello,

does TI have any DRV8301 part which does not have thermal shut down or thermal shut down being removed?

Thanks,

Henry

  • Hi Henry, 

    For DRV830x specifically, I think both devices here have the overtemperature warning/shutdown feature.

    • this just includes DRV8301 and DRV8302, I believe
    • the feature can change how the nOCTW pin reports to excessive temperature, but ultimately I think the device's fault-detection features will still respond to that temperature by shutting the device down 

    Does the new part you are considering have to be pin-to-pin compatible with the DRV8301 device? 

    What are your system requirements? We may be able to help you determine a more suitable replacement if overtemperature response is something that you do not wish to have in your system. 

    Best Regards,
    Andrew

  • Hi Andrew,

    thanks for the feedback.

    we are developing a motor control solution utilizing Insta-SPIN motion.

    We got the DRV8301-28069M kit and we got the prototype working with resolver angler sensor.

    we are in the phase of designing a custom board.

    Reading DRV8301 spec, it seems like a good fit for us and it works on the insta-SPIN kit too, we hope to reuse all the FW we put in place.

    if you have another part with similar capability like DRV8301, does not have to be pin compatible, we are interested in looking at it.

    our DC bus is 60v and can take up to continuous 3A worst case.

    our operating condition is higher than 150c ambient so we do not want to have thermal shut down.  

    Thanks,

    Henry

  • Hi Henry,

    Understood on the baseline requirements, and that having the ability to exclude/disable over-temperature protection is a must. 

    I will send the team a message on this now and see if they have another part to suggest with similar specs. 
    Just want to make sure we have a more comprehensive/accurate answer to get back to you with

    Thanks and Best Regards,
    Andrew

  • Hi Henry,

    To give a preliminary answer for now - you may want to look into DRV8332-HT, oriented towards ~175C temperature spec

    • it still has over-temperature shutdown, but may be triggering at such a level that might be okay for your environment? 

    https://www.ti.com/product/DRV8332-HT

    I'm discussing further within the team as mentioned. Will follow up shortly 

    Best Regards,
    Andrew

  • Hi Andrew,

    thank you for your suggestion.  I just looked DRV8332-HT, it looks like the temperature will be good for us, but the operating voltage is only 52v (absolute max rating is 70V but I would avoid going there).  the current looks fine for us.

    do you have another part similar to this but higher voltage? 

    Thanks,

    Henry

  • Hi Andrew,

    we would like to clarify that we do not need buck converter because we have our own supply for C2000 DSP.

    we would like to avoid "overtemperature shutdown" below:

    please let us know if there is a way to disable this feature or some other IC that is similar spec to DRV8301 (no need for buck converter) and does not shut down overtemperature.

    Thanks,

    Henry

  • Hi Henry,

    There is not a way to disable overtemperature shutdown in DRV8301, yet alone any of DRV devices as excess temperature will cause damage to the package.

    Any reason why temperature needs to be disabled? Does the overtemperature events occur on your custom PCB board or on the EVM? It is an unusual request for overtemp to be disabled on our motor drivers.

    Thanks,
    Aaron

  • Hi Henry, 

    just following up on this thread - our team recently returned from Thanksgiving holiday break and are catching up on some e2e threads. 

    Did the above information help answer your questions? 

    From previous communications within the team, I don't think we found any products within our portfolio that can meet both your voltage and temperature needs - but we do want to thank you for taking the time to post your question to the e2e forum, as it gives us insights into what customers are looking for in their motor driver systems.

    Thanks and Best Regards,
    Andrew 

  • Hi Henry,

    Closing this thread for now - please let us know if you require additional assistance (whether it's on this thread, or other motor-driver related problems).

    Thanks once again for reaching out through the e2e forum for motor drivers 

    Best Regards,
    Andrew