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DRV8860: Part Longevity and Suitability for New Designs

DO-Pro
Intellectual 610 points
Part Number: DRV8860
Other Parts Discussed in Thread: DRV8804, DRV8806, TPIC2603

Hi,

I'm trying to identify a low-side relay/solenoid driver suitable for new designs. Our requirements for the entire solution are listed below. Based on the required number of loads, it's OK to use multiple devices in daisy-chain configuration.

1. Maximum load voltage - 32V dc;

2. Maximum continuous load current - 300mA;

3. Number of loads - 16;

4. Device interface - SPI;

5. Product availability - 10 years minimum.

So far we've identified several products that may or may not be good candidates and mostly focused on DRV8860 and DRV8804. With all of their Yay's and Nay's they are reasonably acceptable options for us in general, provided that they meet requirement #5 above. Unfortunately, we couldn't find any information about product longevity program on TI's website (please note that some other manufacturers do have such info publicly available). Our questions are as follows.

Q1. Are DRV8860 and DRV8804 recommended for new designs?

Q2. What is expected longevity of DRV8860 and DRV8804 based on current demand for these products?

Q3. Could you please recommend some other devices that would fit our design profile based on requirements 1 through 5 above?

Q4. As a possible future option, it would be desirable that suggested devices are capable of providing control for proportional solenoids. What TI devices would be able to offer that functionality? Please note that these parts would have to meet the longevity requirement as well.

Thank you for you support.

Regards, Michael

  • 0
    TI__Guru** 114905 points

    Hi DO-Pro,


    Q1. Are DRV8860 and DRV8804 recommended for new designs?

    Yes, both the DRV8860 and DRV8804 are recommended for new designs. Please note the Status found at the end of the datasheets.


    Q2. What is expected longevity of DRV8860 and DRV8804 based on current demand for these products?

    We do not provide this information, but there are no plans to change from ACTIVE status. If such a decision is made in the future, a lifetime-buy period is offered.


    Q3. Could you please recommend some other devices that would fit our design profile based on requirements 1 through 5 above?

    Please note the DRV8860 and DRV8804 have a traditional SPI interface. Both have serial interfaces that can be daisy-chained.
    There are limited options, but the DRV8806 and TPIC2603 are possibilities.


    Q4. As a possible future option, it would be desirable that suggested devices are capable of providing control for proportional solenoids. What TI devices would be able to offer that functionality? Please note that these parts would have to meet the longevity requirement as well.

    The TI Design http://www.ti.com/lit/ug/tidudf9/tidudf9.pdf shows how a few devices can be used to perform this function.

  • 0 in reply to Rick Duncan
    Intellectual 610 points

    Thank you, Rick.

    Most of our questions are covered now. However, Q2 answer can't be considered satisfactory by any means. How one could plan for a long term program without fully relying on parts availability? It's more likely than not that this time we'll have to select part from some other manufacturer with more definite terms.

    Regards,
    Michael

  • 0 in reply to DO-Pro
    TI__Guru** 114905 points

    Hi DO-Pro,

    As mentioned there are no plans to change the status of the device.

    Please see TI’s policy related to Product obsolescence and Lifetime Buy for more information.