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DRV8305-Q1: PVDD, max current consumption

Jin-Suk Choi
Intellectual 1450 points
Part Number: DRV8305-Q1

Hi~ All.

In DRV8305-Q1, there is only typical PVDD current for operating(20mA) and standby(5mA), but what is max PVDD current consumption for both?

Thanks.

  • 0
    TI__Mastermind 26046 points

    Hi Jin-Suk,

    Let me check characterization data tomorrow to confirm if we have data for max PVDD consumption. 

    Thanks,
    Aaron

  • 0 in reply to Aaron Barrera
    TI__Mastermind 26046 points

    Hi Jin-suk,

    I could not find more char data on IPVDD, but can clarify a couple of things. 

    The typical spec of 20mA for I_PVDD is based on VREG unloaded and the gate driver outputs Hi-Z:



    The max spec is not specified because PVDD current will increase based on VREG load current and average charge pump current, IVCP. 

    IVCP can be calculated from input gate charge of the MOSFET (Qg), PWM switching frequency (fpwm), and # of MOSFETs switching:

    Thanks,
    Aaron