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DRV110: Hold current Calculation

Allen12
Intellectual 435 points
Part Number: DRV110

Hello, how is Rhold calculated?  given: Rsence = 2 ohms,  Ihold = 65mA,  Ipeak = 200mA .

I review the calculation in the datasheet, and it not sinking in.

thanks

  

  • 0
    TI__Mastermind 19860 points

    Hi Allen,

    RHOLD can be calculated from the formula below:

    RHOLD = VREF/(IHOLD x RSENSE)

    Using the given values for VREF = (1 Ohm)(150 mA)(66.67 kOhm), and the values you provided, the following calculation can be made for RHOLD.

    RHOLD = ( 1 Ohm x 150 mA x 66.67 kOhm ) / ( 65 mA x 2 Ohm) 

    RHOLD = 76.962 kOhm

    I hope this resolves the issue.

    Best,

    David