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DRV8825EVM: Thermal issues in Multi layer PCB

Part Number: DRV8825EVM
Other Parts Discussed in Thread: DRV8825

Hi team,

we used DRV8825 driver, It is working fine in independent module of the drv8825 driver.

Now, we go to integrate all other module in One 6 layer please help us how to taken care the thermal issues in multi layer for DRV8825 driver? 

DRV8825 Driver specification: Shunt resister is 0.2ohm, Vref = 1v ,Stepper motor each winding is current is = 0.8A.

independent module worked fine in open loop (more than 1 hour),But some heat is getting ,i thought it impacting in close loop device without thermal protection.

So please suggest me how to taken care the thermal issues in multi layer? 



  • Hi Krishna,

    How much heat is the DRV8825 generating?
    Do you have the recommended thermal vias and a connection to a large ground plane?
    What is the copper weight?

    Can you provide a snippet of the layout, showing how the device is connected to the board and the ground plane?