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DRV8860: Solenoid valve driver chip evaluation

Yuxi Liu(Tony)
Intellectual 1490 points
Part Number: DRV8860
Other Parts Discussed in Thread: DRV8962

Hi Tier

My customer want to use DRV8860PWP to drive four kind of Solenoid.

Could you help me evaluate whether DRV8860PWP is suitable for use here.

Solenoid list:

Part number Driving Voltage Peak Driving Current Driving Power
A1 12V 0.2A 2.5W
A2 24V 0.1A 2.5W
B1 12V 0.35A 4W
B2 24V 0.2A 4W

The solenoid valve reaches peak power when activated.

When keeping, power consumption is reduced.

I see in datasheet DRV8860PWP can output 300mA per channel , Right?

Now we have the competitors of NXP which is MCZ33999EX.

I saw the TI replacement is ULN2803CDWR.

So Which one do you think can promote to customer ?

customer want to use a highly reliable solution and can have some protection functions to replace the original MOS tube discrete solution.

Thank you very much.

  • +1
    TI__Mastermind 21940 points

    Hey Yuxi,

    Yuxi Liu(Tony) said:
    I see in datasheet DRV8860PWP can output 300mA per channel , Right?

    It can do 330mA per channel on all 8 channels simultaneously.  If only 1 channel is on at a time it can do up to 560mA continuously.  I think the device would be fine to control all 4 of the loads in your table above simultaneously at least for medium-short periods of time.  Make sure to follow our Layout Best Practices if you do go with the DRV8860 since it's near the limit of its capabilities. 

    Here's our 1/2 bridge motor drivers with 4+ channels, any of these can be configured as a low side driver for your loads: https://www.ti.com/motor-drivers/brushed-dc-bdc-drivers/products.html#1077=Independent%201%2F2-Bridge&2122=2&  I recommend checking out the DRV8962 (probably overkill for this application, but was just recently released) or the DRV8904.  I think the DRV8904 suits this application better than the DRV8860.  The DRV8904 has open-load detection along with all our standard safety features:

    • nFAULT pin output
    • VM undervoltage lockout (UVLO)
    • VM overvoltage protection (OVP)
    • Logic supply power on reset (POR)
    • Overcurrent protection (OCP)
    • Enhanced open load detection (OLD)
    • Thermal warning and shutdown (OTW/OTSD)

    Regards,

    Jacob

  • 0 in reply to Jacob Thompson
    TI__Intellectual 1490 points

    Thank you. I have last question.

    How about the DRV8860 diode continued current capability? The specific current is not identified in the data sheet. Because the motor's reverse electromotive force requires this diode to forward open, I hope to understand its capabilities.

    I see DRV8904 only have automobile grade standards(Q1), My customer is industrial company.

    Is there any potential risk?

  • 0 in reply to Yuxi Liu(Tony)
    TI__Mastermind 21940 points

    Hey Tony,

    Yuxi Liu(Tony) said:
    How about the DRV8860 diode continued current capability?

    Continued current is 330mA.  I suspect if you are only using 4 of 8 channels you could probably exceed that a little bit, maybe 370mA.  You're welcome to order an EVM and test it out.

    Yuxi Liu(Tony) said:

    I see DRV8904 only have automobile grade standards(Q1), My customer is industrial company.

    Is there any potential risk?

    No potential risk.  The Automotive Grade just means the device has gone through some additional certification/testing/verification to make sure it meets automotive standards.  It will work fine in non-automotive applications.  Sometimes automotive parts will have additional parity bits or CRC calculation on it's SPI communication for error catching/correction, but the DRV8904 doesn't have any of that.  So nope, use any automotive part you want!

    Regards,

    Jacob