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H-bridge DC motor driver with OPAMP as gate driver?
Zero999:
The example shown above is for a device with an open emitter output, which can only pull-up. The LM393 has an open collector output, so the circuit needs to be modified accordingly.
Yansi:
If you go this far with boosting the output stage, why not simply gtfo with the comparator and replace it with just a single small signal n-mos transistor with much better result?
David Hess:
--- Quote from: Yansi on June 28, 2019, 07:07:48 am ---If you go this far with boosting the output stage, why not simply gtfo with the comparator and replace it with just a single small signal n-mos transistor with much better result?
--- End quote ---
I assumed there was some issue with the input voltage threshold needing to be more precise than the Vgs of a MOSFET would be.
ArthurWozniak:
Hey,
Do you consider use DRV family?
There are complete solutions for small current DC motors such yours
If not, IR2104 gate driver is awesome
Best regards,
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