MLI using IR2110 causing a short

Thread Starter

EC.Engineer

Joined Dec 11, 2016
1
Hello

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 between Q1 and Q4.
 
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