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DRV8662 Footprint Size and Gain Steps

Brian Burk
Genius 9670 points
Other Parts Discussed in Thread: DRV8662EVM, DRV8662

Posted on behalf of Asher:

  1. Lower voltage and Lower PCB foot print - I purchased the DRV8662EVM, and look for ways of achieving Lower PCB foot print (at the expense of Lower voltage).
    1. Can the DRV8662 be operated without the L1, C1 to achieve lower foot print ?
    2. Is there a way for getting smaller gain steps (and not just the present 4 steps gain control).

 

 

 

  • 0
    TI__Genius 9670 points

    1. Lower voltage and Lower PCB foot print - I purchased the DRV8662EVM, and look for ways of achieving Lower PCB foot print (at the expense of Lower voltage).
      1. Can the DRV8662 be operated without the L1, C1 to achieve lower foot print ?
        No.  Boost Inductor and Boost capacitor are required for Boost (DC-DC Converter) to operate.  It is possible to use a smaller inductor/capacitor if the current requirement is lower (for inductor) and voltage requirement is lower (for capacitor).
      2. Is there a way for getting smaller gain steps (and not just the present 4 steps gain control).
        An external input resistive divider can scale the gain down to any level you like.  The 4 gain step sizes will of course remain the same.