DRV8305-Q1: PVDD, max current consumption

Jin-Suk Choi

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.

over 4 years ago

0 Aaron Barrera over 4 years ago

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 Aaron Barrera over 4 years ago 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

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DRV8305-Q1: PVDD, max current consumption