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DRV8881:

Part Number: DRV8881

Hi all

Would you mind if we ask DRV8881E?

We have some questions which are relation to follows E2E forum.
http://e2e.ti.com/support/motor-drivers/f/38/p/772361/2856520#2856520

Our customer would like to DRV8881E for BDC at only A side Motor.
So, they don't use B side Motor.
Therefore we would like to confirm the termination of unused pins for B side.
We assume follow;

BPH、BEN : Low(pull down)
Bout1, 2 : Open
BREF : 3.3V
BDecay : Open
BSENSE : GND or Open or shunt resistance the same as ASENSE?

We would like to know the correct setting for BSENSE.

Kind regards,

Hirotaka MatsumotoKind

  • Hi Matsumoto-san,

    You are correct. The following connections are recommended when the B side is not used:

    BPH、BEN : Low(pull down) <-- Both BPH and BEN have internal pulldowns and can be left floating if desired.
    Bout1, 2 : Open
    BREF : 3.3V
    BDecay : Open
    BSENSE : GND is recommended