Timeline for Op-Amp current sense in H-Bridge
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 9, 2022 at 9:54 | vote | accept | Guido Bocchieri | ||
| Oct 10, 2020 at 16:48 | comment | added | D.A.S. | stray inductive noise from motor wires can be reduced using twisted pairs. Your schematic cannot show all the wire inductive or crosstalk without a photo of layout 10nH/cm. This can create more voltage than the resistor depending on layout. thus raising the differential input RK’s on both sides with int/ext clamp Sch diodes to rails will prevent overshoot | |
| Oct 10, 2020 at 10:53 | comment | added | Guido Bocchieri | Thanks for the reply and the recommendations. Now I think I fully understand the op-amp common mode issue and how I could possibly solve it maintaining this design. However I do not understand the ESD issue, who is powering the 12V rail, why it happens only when EN is active, how could I properly change the design to "observe ESD precautions and latchup protection". | |
| Oct 7, 2020 at 19:37 | history | edited | D.A.S. | CC BY-SA 4.0 |
added 277 characters in body
|
| Oct 7, 2020 at 19:31 | history | answered | D.A.S. | CC BY-SA 4.0 |