DRV8908-Q1: Can nSLEEP pin be low during PWM output in DRV8908-Q1?

Kento Adachi

Expert 4915 points

Part Number: DRV8908-Q1

Tool/software:

Hello experts,

Can nSLEEP pin be pulled to low during PWM output in DRV8908-Q1?

Any concern for this?

Thanks,

Kento

11 months ago

0 Keerthivasan Kumanan 11 months ago

TI__Mastermind 19405 points

Hi Kento,

Give us 24 hours to look into this and get back to you.

Best,

Keerthi

0 Kento Adachi 11 months ago in reply to Keerthivasan Kumanan

TI__Expert 4915 points

Hello Keerthivasan,

Could you please answer this soon?

Thanks,

Kento

0 Joshua Horlander Cruz 11 months ago in reply to Kento Adachi

TI__Mastermind 26090 points

Hi Kento,

Typically, pulling nSLEEP low while the device is driving OUTx is not a concern. However, this is dependent on the load being driven. For example, a motor could generate enough BEMF voltage while decelerating to pump the VM voltage and potentially violate the abs max rating of the device. This can be mitigated with sufficient bulk capacitance on VM or decelerating the motor before pulling nSLEEP low.

Regards,

Joshua

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DRV8908-Q1: Can nSLEEP pin be low during PWM output in DRV8908-Q1?