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DRV8302: What is the maximum high and low level transition frequency of the gate of this IC?

Cherry Zhou
Mastermind 22235 points
Part Number: DRV8302
Other Parts Discussed in Thread: DRV8301,

Hi team,

The customer is wondering what is the maximum frequency at which the gate high and low level transitions of the DRV8301/8302 outputs can be made? Is it based on f_gate 200kHz(MAX) in datasheet 6.3 or on the time of each action in section 6.6? 

Could you help look into this case? Thanks.

Best Regards,

Cherry

  • 0
    TI__Mastermind 18916 points

    Hi Cherry, 

    Our team member is out of office, but we'll aim to get you an updated reply on this e2e by the end of this week 

    Best Regards, 
    Andrew 

  • 0
    TI__Genius 10515 points

    Hi Cherry,

     

    The maximum frequency that the gate high and low transitions can be made is based on f_gate which is calculated by dividing the total average gate drive current/6 by the total gate charge of the MOSFETS.

    For the DRV8301 and DRV8302 the total average gate drive current is 30 mA, which makes the equation: (30 mA/6)/ total gate charge.

    Best Regards,

    Joshua