Hello everyone,

I am trying to build a boost converter using IR2301 gate driver IC. I already built a buck converter which was successful and works great. However, boost converter is the one that I can not get to work. I am only using low side output from the driver. I am really struggling to get the right pin connections. Below you can see the diagram for driving low/high side and my attempt to drive as in a boost converter.

 

hi RB,
Welcome to AAC,
Your circuit diagram shows that you shorting the 12V supply to 0v!, check the drawing.
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Thanks ericgibbs for a quick response. I see exactly what you mean. Where does my input voltage go then? It does say VCC Low side and logic fixed supply voltage - (5 20V) in a datasheet. Is this where I should connect my input voltage? I really need a good explanation on how to configure this properly.

 

hi RB,
Look at the top half of your drawing, see where the MOSFET is connected.
If you add some values to the components I could run a LTSpice simulation for you.
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Yeah, I understand that the MOSFET drain should be connected after the inductor, that was a mistake. I am more interested in how to connect the gate driver IC appropriately..

I ran the simulation myself on LTSpice but I only connected a voltage source across the gate and source and set it to send pulses which worked.

 

hi,
Have you read this App sheet for the IR2301.
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