Motor driver (input: unipolar (0-5V) output (bipolar(+/-5V))

Ebrahim Rasouli

Other Parts Discussed in Thread: DRV8837C

Hello,

Looking for a product compatible with Arduino and accepts a unipolar PWM from Arduino or a DAC (eg. 0-5 V) and gives me a bipolar output(+/-5V or +/-10V).

I understand it is possible to make it using an opamp but before that wanted to see if there is an off-the-shelf product.

Thanks,

over 5 years ago

0 Wang5577 over 5 years ago

TI__Guru 56650 points

Ebrahim,

Besides the PWM signal from Arduino, do you have 5V or 10V source in the system?

"a product compatible with Arduino" I don't know the detail requirement. How about DRV8837C? It has two channels and can accept the PWM signal from Arduino and control integrated switches to connect the input source to the output. If need +5V from OUT1 to OUT2, Arduino can set IN1 high and IN2 low. If need -5V from OUT1 to OUT2, Arduino can set IN2 high and IN1 low.

0 Ebrahim Rasouli over 5 years ago in reply to Wang5577

Prodigy 80 points

Dear Wang,

Thanks for your prompt reply.

I believe this is helpful. My last question is about signal resolution. Does this product or a similar product improve the signal resolution or do I need to use a DAC interface(from Arduino to DRV8837C)?

Thanks again,

0 Wang5577 over 5 years ago in reply to Ebrahim Rasouli

TI__Guru 56650 points

Ebrahim,

I am not familiar with Arduino code. Here is DRV8837C logic table. Arduino code can control IN1 and IN2 to get different output.

0 Ebrahim Rasouli over 5 years ago in reply to Wang5577

Prodigy 80 points

Thanks!

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Motor driver (input: unipolar (0-5V) output (bipolar(+/-5V))