DRV8432: Maximum DC Bus Voltage Vs (abs/max)

Amir Rashid

Part Number: DRV8432

Hi,

There is a small confusion on the maximum safe voltage for using this IC. Its datasheet mentions 70 V. However, its evaluation board recommends 52.5 V only. What limits the evaluation board not to be used upto or near the maximum voltage? please. In my application, the DC bus voltage is 61 V. I want to use this IC to driver stepper motors. or please advise if that is possible. Also, please recommend a change, which may extend the operation of evaluation board to 61 V. Thank you.

over 1 year ago

0 Ryan Kehr over 1 year ago

TI__Guru 54645 points

Amir,

The recommended max in the DRV8432 datasheet is 52.5V. That is why the EVM is rated to this.

If you need 61V, may a suggest a new device that just started sampling last week?

https://www.ti.com/lit/ds/symlink/drv8462.pdf

It is available in a pad-up like DRV8432 or a pad-down like DRV8412. All stepping logic is built in including some very advanced features like auto-torque and stall. Also advanced decay modes. All you need from your MCU is a STEP/DIR input and the rest is taken care of for you.

Regards,

Ryan

0 Amir Rashid over 1 year ago in reply to Ryan Kehr

Prodigy 10 points

Dear Ryan Kehr,

Good morning. Thanks a lot for this useful guidance. DRV8462 appears to be the best among stepper motor drivers. Please advise on its availability. When can we buy it? please. Thank you.

0 Ryan Kehr over 1 year ago in reply to Amir Rashid

TI__Guru 54645 points

Amir,

Samples are available today and an EVM.

https://www.ti.com/product/DRV8462

Regards,

Ryan

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DRV8432: Maximum DC Bus Voltage Vs (abs/max)