So I have been designing a brushless motor and the circuit that drives it is based off of this Texas Instruments one here. The only problem is that this circuit runs off a minimum of 24v. I would like to use 12v, but I wasn't sure of the best way to go about doing this. The motor pre-driver (DRV8308) will work with 12v.

EDIT: Can someone at least explain to me why it is 24v minimum on the circuit i linked?

  • \$\begingroup\$ Where does it say 24V minimum? The driver chip works on 12V and the MOSFETs won't complain either... \$\endgroup\$ – peufeu Aug 16 '17 at 14:12
  • \$\begingroup\$ On the page on which I found the schematic. ti.com/tool/tida-00197 \$\endgroup\$ – user159781 Aug 16 '17 at 15:00
  • \$\begingroup\$ Well, all the chips work at 12V, I really wonder why they specced a minimum of 24V! You could ask them... IMO it should work... \$\endgroup\$ – peufeu Aug 16 '17 at 17:27
  • \$\begingroup\$ Yeah maybe its because the RPM and/or torque would be reduced (lower voltage into the coils) \$\endgroup\$ – user159781 Aug 16 '17 at 22:25

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy