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BLDC 2shunt current monitor

NAOKI AOYAMA
Guru 11215 points
Other Parts Discussed in Thread: DRV8301

Hello,

I have a basic question about BLDC two-shunt current monitor.

I read the user's guide of InstaSPIN-FOC (spruhj1f) page 553.

But I could not understand how to measure.

Could you give me a figure of phase current and output voltage during 

electrical angle from 0 to 360 degree?

or

Could you give me a simple text?

Regards,

Naoki Aoyama

  • 0
    TI__Guru** 114905 points
    Hi Aoyama-san,

    Please refer to page 16 of the DRV8301 datasheet. This describes the current shunt amplifiers.

    The amplifiers are configured to measure both positive and negative currents in two phases. As mentioned in spruhj1, the current in the third phase can then be calculated.