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DRV8800: driving 2 different motors, one is overheating and generating an audible humming noise

Matthew Connor
Prodigy 20 points
Part Number: DRV8800

Hi I am using 2 DRV8800 in my custom PCB, 1 is driving a Moon's ML23HS4P4210 with the only issue being that when it starts moving it is really fast and almost a jerking motion what my test team describes as jumping. But of more concern is the 2nd motor, Moon's MS17HD2P4100. This motor is getting hot to the point that you cannot touch it and furthermore is creating a noticeable humming noise when it actuates Both motors are using the exact same circuit in the PCB. Any help is appreciated. 

Matt

  • +1
    TI__Mastermind 37683 points

    Hi Matt,

    I check the specifications for both motors and the P4100 is rated for 1A and the P4210 for 2.1A. What is the ITRIP limit configured to in both drivers? It could be possible the full scale current for the 1A motor is near 1A or above it and causing the overheating. If you overdrive a motor, it can cause noticeable vibrations and noise.

    Regards,

    Pablo Armet

  • 0 in reply to Pablo Armet
    TI__Mastermind 37683 points

    Hi Matt,

    Any updates? were you able to resolve the issue? I will close this thread but you can reply or ask a new question if you require further support.

    Regards,

    Pablo Armet