MP6508A

– 18V, 1.2A STEPPER MOTOR DRIVER IN A QFN-16 (3MMx3MM) PACKAGE

MP6508A Rev. 1.0

MonolithicPower.com

13

4/12/2023

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PCB Layout Guidelines

Efficient PCB layout using a heavy ground

plane is critical for stable operation. For the

best results, refer to Figure 8 and follow the

guidelines below:

1. Solder the MP6508A directly on the board

to

improve

electrical

and

thermal

performance.

2. Place the sense resistors as close as

possible to the MP6508A for accurate

current detection.

3. Use an exposed pad to provides a path for

enhanced thermal dissipation.

4. Solder the thermal pad directly to the

copper on the PCB.

5. Use thermal vias to transfer heat to the

other layers of the PCB.

Top Layer

Bottom Layer

Figure 8: Recommended PCB Layout