drive brushless DC motor with L6235 according to DT0001

r239955_stm1_stmicro · ‎2015-04-10

Posted on April 10, 2015 at 11:52

Hi there,

I recently had a discussion on DT0001 motor control [DEAD LINK /public/STe2ecommunities/motordriver_ics/Lists/Motor%20Control%20Firmware%20and%20Software/Flat.aspx?RootFolder=/public/STe2ecommunities/motordriver_ics/Lists/Motor%20Control%20Firmware%20and%20Software/Speed%20Control%20according%20to%20DT0001&FolderCTID=0x01200200770978C69A1141439FE559EB459D758000CE106710FFA6574FB92BFFEFCE2DD930&TopicsView=https://my.st.com/public/STe2ecommunities/motordriver_ics/Lists/Motor%2520Control%2520Firmware%2520and%2520Software/AllItems.aspx&currentviews=19]here.

In the end, since I am using the L6235 to drive the motor I was wondering whether this IC is able to handle current coming back from the motor when braking.

Thanks,

Rasmus

#dt0001 #l6235

Enrico Poli · ‎2015-04-26

Posted on April 27, 2015 at 08:25

Hi Rasmus,

until the motor current and the bus voltage stay within the absolute maximum ranges there are no issues. Basically I confirm all the suggestions from the post you linked.

However, the integrated overcurrent protection does not operate in this case (it is not sesitive to ''reverse'' currents); so you cannot rely on it for the device protection.

Enrico