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DRV8962-Q1: Sleep mode

Ivy Jin
Expert 4975 points
Part Number: DRV8962-Q1
Other Parts Discussed in Thread: DRV8263-Q1

Tool/software:

Hi team,

If the MCU and DRV8962-Q1 are both in sleep mode and the motor is turned manually (e.g. Power Trunk), is there any protection mechanism for the DRV8962-Q1? 

Regards,

Ivy

  • 0
    TI__Mastermind 48195 points

    Hi Ivy,

    For this application we recommend to use the DRV8263-Q1 not the DRV8962-Q1. The DRV8263-Q1 has Powered off Braking feature to address such conditions. The DRV8962-Q1 does not have protection mechanism for back driving manual motor movement. Besides the DRV8962-Q1 is 4x half-bridges configuration which is not suitable for bidirectional motor drive. Although it could be used in full-bridge configuration its current regulation works differently and is not suitable for reliable current regulation for all types of motors. We suggest the DRV8263-Q1 for this purpose. 

    What is the end application? Thank you.

    Regards, Murugavel 

  • 0 in reply to Murugavel4637
    TI__Prodigy 480 points

    Hi Murugavel,

    Customer intend to use DRV8962-Q1 on Trunk lift and Window lift.

    Since you said there is no protection mechanism. So when the device is in sleep mode, and the motor is manually driven backward. What other things would happen except the DC bus voltage rising?

    Best regards

    Hanbing

  • 0 in reply to Hanbing Xiao
    TI__Mastermind 26910 points

    Hi Hanbing,

    Other than pumping the VM voltage, the current through the high side body diodes could cause the MOSFETs to become damaged if it is present long enough and it is high enough. Although the body diode should not be an issue in most cases.

    Regards,

    Joshua