DRV110: control method

Brian Wang0928

Genius 14160 points

Part Number: DRV110
Other Parts Discussed in Thread: TIDA-00289

In the below equation, how does the 900mA/150mA/66.67KΩ/2MΩ come from?

Regards

Brian

0 Aaron Goodson over 6 years ago

Hi,

I have notified our expert regarding this topic. Please expect a response by 8/27/19.

Thanks,

Aaron

0 Costin Cazana over 6 years ago

Hi Brian,

You can control Ipeak and Ihold with MCU controlled DAC's

Ipeak_pin and Ihold_pin sets the comparator threshold voltage than compare it with Vsense.

DAC voltage is 0V -1V. When Rsense=1ohm and DAC's series R=66.67kohm:

Ihold:150mA to 0 ( DAC 0 to 1V)

Ipeak_900mA to 0 ( DAC 0 to 1V)66.67kohm and 2M(333kohm) are equivalent comparator input range

Regards,

Costin

0 Brian Wang0928 over 6 years ago in reply to Costin Cazana

Thanks. i'll check if it works or not with your suggestions?

Could you support the TIDA-00289 EVM to customer? It's an important project they are doing. If ok, i gonna to give you address in separated mail.

Regards

Brian

0 Costin Cazana over 6 years ago in reply to Brian Wang0928

Hi Brian,

I can support, please e-mail me details.

Regards,

Costin

Motor drivers forum