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DRV110: Understand Peak current allowed

Part Number: DRV110

Tool/software:

Hi,

I am looking to use the DRV110 to drive a solenoid. Ideally it would be able to support up to 3A's for peak operation, and reduce to about 0.5A for holding. Is this something the DRV110 is capable of? I understand based on the datasheet that the peak and hold current are adjustable, but the datasheet does not provide what the "maximum" current control is. The only design constraints I see are that Rpeak and Rhold have to be greater than 66.67kohms and Rsense has to have at least 30mA through it. Can Rsense be less than 1 ohm?

Thanks

  • Hi Chase,

    The DRV110 should have no issues supporting 3A peak and 0.5A hold current. Setting the proper peak and hold currents depends on other parameters, such as, Rsense. The following link can be used to configure these device parameters for your application. It features graphs demonstrate the relationships of the output current and the configuration settings.

    https://www.ti.com/tool/download/SLIC024 

    Yes, Rsense can be less than 1Ω.

    Best,

    David