Since the DRV8210P device has
integrated power MOSFETs capable of driving high current, careful
attention should be paid to the layout design and external component
placement. Some design and layout guidelines are provided below. For
more information on layout recommendations, please see the
application note Best Practices for
Board Layout of Motor Drivers.
- Low ESR ceramic capacitors should be utilized for
the VM-to-GND and VCC-to-GND bypass capacitors. X5R and X7R types are
recommended.
- The VM and VCC power supply capacitors should be placed as close to the
device as possible to minimize the loop
inductance.
- The VM power supply bulk capacitor can be of
ceramic or electrolytic type, but should also be placed as
close as possible to the device to minimize the loop
inductance.
- VM, OUT1, OUT2, and GND carry the high current from the power supply to the
outputs and back to ground. Thick metal routing should be utilized for these
traces as is feasible.
- GND should connect directly on the PCB ground plane.
- The device thermal pad should be attached to the PCB top layer ground plane and
internal ground plane (when available) through thermal vias to maximize the PCB
heat sinking.
- The copper plane area attached to the thermal pad should be maximized to ensure
optimal heat sinking.