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I want to make a square wave inverter for DC resonant converter. I have constructed this full-wave bridge inverter which is to work at frequencies of 50kHz to 100Khz.

enter image description here

The input is 37V DC. The gate signal in of 5v and at a frequency of 50kHz. The problem is that the output is not coming. Only a square wave signal of 1.4V is generated with the same gate signal frequency.

enter image description here

I think that the MOSFETs need a gate driver but don't know how to design one for this circuit or some kind of bootstrapping circuit. I have to run this with an Arduino UNO. kindly need suggestions on what to do.

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  • \$\begingroup\$ There are many posts on this site re fair drivers and inverters. You will need level society's for the high side gate and hate drivers for all gates. Look through this site and then come back and ask questions. \$\endgroup\$
    – Russell McMahon ♦
    Commented Jan 31, 2021 at 9:31
  • \$\begingroup\$ You have misunderstood how a MOSFET work. Look at examples of working H-bridges and compare to yours. \$\endgroup\$
    – winny
    Commented Jan 31, 2021 at 9:35
  • \$\begingroup\$ can you please refer a source where I can get complete information about the gate drivers and H- bridge inverters. \$\endgroup\$
    – Usama Toor
    Commented Jan 31, 2021 at 10:05
  • \$\begingroup\$ Have you tried Google? \$\endgroup\$
    – winny
    Commented Jan 31, 2021 at 10:32
  • \$\begingroup\$ Just use gate driver ICs that do the job for you. \$\endgroup\$
    – user16324
    Commented Jan 31, 2021 at 13:30

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The gate signal in of 5v and at a frequency of 50kHz.

It's not going to happen with your circuit. Consider this: -

enter image description here

The upper MOSFETs are source followers hence they provide no voltage amplification and the source follows (clue in the name) the gate but maybe 1 or 2 or 3 volts lower. So, if the gate signal is 0 volts to 5 volts repeating, the output p-p will be a couple of volts at best.

I have constructed this full-wave bridge inverter which is to work at frequencies of 50kHz to 100Khz.

Well, you may have constructed it but no, you have not designed a H bridge. There are plenty of web designs available so I suggest you find one that uses bootstrap drivers and is capable of working at your supply voltage range.

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