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Original question:

DRV110: DRV110 Schematic Values

DRV110EVM: DRV110 Frequency PWM

Tester1002
Prodigy 20 points
Part Number: DRV110EVM

Hi,

I am using DRV110EVM board to drive a 24V/10W solenoid. One of the required parameter is Rosc which is used to set the frequency PWM.

Can someone please explain what parameters are used to define the frequency?

Thanks.

  • 0
    TI__Genius 11190 points

    Hi,

    Can someone please explain what parameters are used to define the frequency?

    The fPWM frequency is used to scale the internal PWM clock signal. This frequency value is triggered at the output on each ON cycle.

    The default frequency can be used by connecting OSC directly to GND.

    Best,

    David

  • 0 in reply to David Medis
    Prodigy 20 points

    Hi David,

    Thank you for the reply. I have seen this information on the datasheet.

    What advantage the default frequency gives?

    Is there any condition should the frequency be defined other than the default frequency?

    If so, what parameters are used to define it? What does this frequency depend on?

    Regards.

  • 0 in reply to Tester1002
    TI__Genius 11190 points

    Hi,

    The frequency is used for current regulation. It is set to a default frequency but may need to be adjusted depending on the load. The frequency may need to be adjusted if the load requires a smaller or larger drive current. 

    Best,

    David