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DRV8711 and TMS320F28377S Launchpad- Current Sense Query

Other Parts Discussed in Thread: DRV8711, BOOSTXL-DRV8301

Hi,

I'm a beginner. I would like to know how current sense can be achieved using DRV8711.

It has an internal circuitry that does current sense.

Will I be able to read the current sense data through SPI interface or should I use a dedicated circuitry for this purpose?

If a separate current sense circuit is required, then which terminals will I be using to connect the current sense circuit.

Thanks

  • Hi Janani,

    You cannot read current sense data through the SPI interface. You will need dedicated circuitry.

    To connect a separate current sense circuit, you should connect across the sense resistor xISENP and xISENN signals of the DRV8711. An example of how to create a current sense circuit can be found in Figure 8 of the BOOSTXL-DRV8301 hardware guide, www.ti.com/.../slvu974.pdf .