DRV8343-Q1: DVDD

Ivy Jin

Part Number: DRV8343-Q1

Tool/software:

Hi team,

May I ask if the DVDD voltage and the internal digital core power supply of the chip are the same power supply? Can the DRV8343-Q internal digital core supply voltage be determined by capturing the voltage of the DVDD?

Thanks!

Regards,

Ivy

over 1 year ago

+1 Akshay Rajeev Menon over 1 year ago

TI__Mastermind 23676 points

Hey Ivy,

Thank you for the question. Yes the DVDD is the supply for the dig core in this device.

Best,

Akshay

0 Ivy Jin over 1 year ago in reply to Akshay Rajeev Menon

TI__Expert 4625 points

Hi Akshay,

May I know if there is any risk to the system when the VDD unconnected capacitance is shorted directly to AGND？

Thanks.

Regards,

Ivy

0 Akshay Rajeev Menon over 1 year ago in reply to Ivy Jin

TI__Mastermind 23676 points

Hey Ivy,

When DVDD is shorted with AGND then the device logic will not power up. The DVDD nominal, no-load output voltage is 3.3 V. When the DVDD load current exceeds 30 mA, the regulator functions like a constant-current source. The output voltage drops significantly with a current load greater than 30 mA. But this should not result in device damage.

Best,
Akshay

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DRV8343-Q1: DVDD