Hi, good evening from Italy and compliments for your technical experience/answers
I am looking for H bridge circuit to drive (by PMW) my DC motor (10 Amp max at 24Vdc).
So, i found some circuits on the web. (i can put the link, if possible...) but i think is not important. Many circuits but very similar...
I built one circuit (full H bridge) using ir2101 drivers, but I have big doubts about how to drive the inputs of the two IR2101. Let me explain:
I can generate (by MCU microcontroller) the signal PWM or 2 PWM or 4 PWM. No problem about it.
Of course, if i can use only 1 PWM, will be better (already have a micro programmed !! ).
The frequency (PWM is 20 Khz), to avoid audible frequencies.
The PWM will be from 5 to 95 % duty (around...) to avoid problem with bootstrap.
The motor have to go in both directions (so i choose full bridge...).
Now the questions:
How i have to drive (and connect...) the inputs pin (HIN and LIN) of both IR2101?
The signals (coming from MCU) to HIN and LIN must do be in phase or in "phase opposition"?
Once understood this, they must to have "dead time" (between them....) or not? (if not, i can simply reverse the phase with logic port, e.g. 4096 or 40106).
Then, last question (just to understand better....sorry): Once understood how and in which mode drive the input port of IR2101, if i want drive the motor in one direction, i have to drive one IR2101 or both??
Can you (pls...) draw me simply a example??
Help me pls....is not easy understand this matter.
Thanks again for your help,
waiting for your kindly reply,
Pietro