DRV8812: May we have Bipolar Stepper Motor Driver with 4-Level Current Regulation that Vin can down to 6V(Vmax is 45V)?

Chen Bogey8

Mastermind 9990 points

Part Number: DRV8812

Hi Sir

May we have Bipolar Stepper Motor Driver with 4-Level Current Regulation that Vin can down to 6V(Vmax is 45V)?

I check website, there seems have no~~

Bogey

over 7 years ago

0 Rick Duncan over 7 years ago

TI__Guru** 114905 points

Hi Chen,

The devices that operate at 45V do not operate at 6V. Likewise, the devices that operate at 6V do no operate at 45V.

If you need VM min 6V to VM max 45V, you will need to increase the voltage above the VM min when operating at 6V. This can be done by adding a boost regulator to increase the voltage.

How long will the voltage be 6V? Another option is to add a diode in series with VM and place a large bulk cap to keep the voltage above minimum VM.

0 Hector Hernandez Luque over 7 years ago in reply to Rick Duncan

TI__Expert 8985 points

Hi Chen,

Did Rick's suggestion resolve your question?

If so, please close this post by accepting the post is resolved in Rick's highlighted in yellow answer above me.

Thanks!

0 Chen Bogey8 over 7 years ago in reply to Hector Hernandez Luque

Mastermind 9990 points

Hi Sir
yes, the issue already solve.

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DRV8812: May we have Bipolar Stepper Motor Driver with 4-Level Current Regulation that Vin can down to 6V(Vmax is 45V)?