MLI using IR2110

[EC.Engineer]

I am working on a Multi-level inverter and using IR2110 for driving the high and low level MOSFETs but I am facing a problem related to interaction between Q4 and Q1. They seem to cause some sort of a short in the circuit when both of them are on. Disconnecting either of them works fine but I need them both to generate the staircase signal.

This is the complete circuit design

Zoomed in:

These are the gate signals generated by the microcontroller:

and these are the gate signals at the output of IR2110

g2 wave is not shown. It is exactly the complement of g1.


I need help in solving the short-circuit issue.

 

[(*steve*)]

Draw in the body diodes for the mosfets and you'll see the problem. I prefer using symbols which have the body diodes shown for this very reason.