DRV8305: Is there alimit for the current driven ?

Hi Christian, 

There is no limit for the amount of motor current you can drive with a gate driver device like the DRV8305, but keep in mind the higher current you switch, the more robust the gate driver + powerstage design should be to quickly switch high currents. 

You should eliminate parasitics in the power stage as much as possible using good PCB design to mitigate parasitics (including the 300uohm sense resistor), external components to protect against transients that can damage the driver or external FETs, and use good IDRIVE and protection settings in the driver to further protect the system from damage when evaluating and spinning the motor. 

You can find a lot of great resources below on helping with preparing for design:

• https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1039040/faq-how-to-conduct-a-bldc-schematic-review-and-debug
• https://www.ti.com/lit/pdf/slvaf66
• https://www.ti.com/lit/pdf/slva959
• https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/796378/faq-selecting-the-best-idrive-setting-and-why-this-is-essential

Thanks,
Aaron