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DRV8876: Motor drivers forum

LEANDRO SCHMITZ
Prodigy 210 points
Part Number: DRV8876
Other Parts Discussed in Thread: DRV8842

Hello, 

I read in SLVAE59 which DRV8876 can be used to drive low current solenoid valve:

3.3 DRV8876 For lower current applications the DRV8876 is an integrated H-Bridge driver that can also be configured to drive two solenoids in Independent Half Bridge mode.

The datasheet of DRV8876 defines as 3.5A the maximum peak current, but to me is difficult to determinate how is the maximum current it can drive to control a solenoid valve.

I'd like to drive a Solenoid valve: Nominal Voltage of 12V; Rated Power of 27W; Current of 2.25A; 

And I'd like to know if can I use DRV8876  to drive it, or is strictly recommended to use DRV8842 instead that.

Thanks for help.

Regards

Leandro Schmitz

  • 0
    TI__Expert 8980 points

    Hi Leandro,

    The maximum peak current of 3.5A is device based, not load based. If both valves are driven at the same time at 2.25 A, then 4.5 A > 3.5 A and the device is not suited for the application. If the application is below 3.5 A, then the device is suited for the application.