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DRV8845: replacement suggestion for BU24033GW

Peter Tseng
Mastermind 6430 points
Part Number: DRV8845
Other Parts Discussed in Thread: DRV8912-Q1, DRV8849

Hi Team,

Please help to suggest a solution for BU24033GW replacement.

Thanks.

  • 0
    TI__Mastermind 21880 points

    Hi Peter,

    The DRV8845 is a quad H-bridge motor driver. This could be a possible replacement if only 4 H-bridges are needed. 

    The DRV8912-Q1 is a 12-channel half-bridge driver that would match the number of available channels. 

    Best,

    David

  • 0 in reply to David Medis
    Mastermind 6430 points

    Hi Sir,

    Checked with customer, they use the driver for shutter control and need the current limit function.

    It seems DRV8912-Q1 did not support the current limit function, right?

    If yes, any suggestions for it?

    Thanks.

  • 0 in reply to Peter Tseng
    TI__Mastermind 21880 points

    Hi Peter,

    The DRV8912-Q1 does have an Overcurrent Protection circuit (OCP) that will protect the device from inrush, shorts, or transient current spikes that may damage the device. 

    If Current Regulation is needed, than yes I would agree that the DRV8845 or DRV8849 would be a suitable replacement. 

    The DRV8849 offers more microstepping levels (256 u-step levels) and integrated current sensing, compared to the DRV8845 which has (4 u-step levels) and external current sensing.

    See more about the comparison of these devices listed below.

    DRV8845 vs DRV8849

    Best,

    David