How to use only high side of IR2110 mosfet driver to switch a mosfet

Hi all,

I am planning to built a buck and buck boost converter, and I wonder if I can use only the high side of IR2110 for switching the mosfet (IRF540N) in the converter??? I know that it should be no problem to run a single low drive for IR2110, but based on what I have studied from the relevant threads, driving single high side (by ignoring the low side) seems like quite impossible as the circuit require at least a half bridge configuration for single high side drive. Am I correct??

Actually, I just want to confirm from you guys if my concept is correct, and whether it is possible to drive mosfet by using only single high side drive for IR2110?? I have tried to contruct a test circuit for a buck boost converter, but it is not working. Seriously, the info for this topic is quite limited , and I did really spent time to study and research about this. Maybe a few words of reply from you guys, my problem will be solved.

Please help. Thank you very much.

Best Regards

You can start by checking similar old threads https://www.edaboard.com/threads/137152/

Hi,

Thanks for the instant reply. Yup, this is one of the threads that I have studied before opening the new thread.
By the way, I am going to try the half bridge configuration on IR2110, but I have several questions over here. Please give me some suggestions...

I know that the purpose of having the low side drive driven for the half bridge configuration is to charge the bootstrap capacitors across Vb and Vs. So I will need to on the second mosfet for a certain period of time in order to charge the capacitor. I would like to know that does the duration of charging the capacitor really matter?? Can I charge the capacitor without knowing the exact duration?? Something like enable and disable (push and release push button) the low side signal manually. After charging the capacitor then I will enable the first mosfet via variable duty cycle PWM signal. Same cycle (recharge the capacitor) will be repeated after I off the pwm signal at the first mosfet. Is this method applicable?

Please advice. Thank you very much.

Regards