DRV2603: Questions of DRV2603

Jimmy Lai

Expert 6845 points

Part Number: DRV2603

Dear Team,

If MCU side voltage is 1.9V.

May I know the DRV2603 setting as below is OK?

VDD:3.3V，EN、PWM、LRA/ERM: 1.9V

Many Thanks,

Jimmy

over 1 year ago

0 Jeff McPherson over 1 year ago

TI__Mastermind 31325 points

Hi Jimmy,

Can you elaborate on your settings? I'm not sure what you mean.

Thank you,

Jeff McPherson

0 Jimmy Lai over 1 year ago in reply to Jeff McPherson

TI__Expert 6845 points

Hi Jeff,

When the VDD of DRV2603 is 3.3V, can the IO part (EN, PWM, LRA/ERM) communicate with the 1.9V MCU?

Many Thanks,

Jimmy

0 Jeff McPherson over 1 year ago in reply to Jimmy Lai

TI__Mastermind 31325 points

Hi Jimmy,

It will probably work without issue. Double check Table 6.3 to see the logic thresholds and make sure they are within the logic thresholds set by your MCU. The maximum voltage on the digital input pins is VDD+0.3V = 3.6V which is well beyond your 1.9V logical high, so damage is not a risk.

Best regards,

Jeff McPherson

0 Brian Dang over 1 year ago

Genius 5040 points

Jimmy Lai said:
If MCU side voltage is 1.9V.

May I know the DRV2603 setting as below is OK?

VDD:3.3V，EN、PWM、LRA/ERM: 1.9V

Hi,

The 2603 logic low 0.6v max is not the issue, but you need to verify if the MCU logic high output is 1.2v or higher. MCU with 1.9v supply doesn't mean its GPIO output is 1.9v.

Brian

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DRV2603: Questions of DRV2603