This rising potential could be as high as the drain voltage of the high side mosfet. It's because initially the load at the source of the high side mosfet presents a high impedance, resulting in a mounting voltage at the source of the mosfet. When identical devices or 4 n-channel mosfets are used in a full bridge network, bootstrapping becomes imperative. So what’s exactly a Bootstrapping Network and how does this become so crucial while developing a Full bridge inverter circuit? The crucial hurdle in a full bridge or a H-bridge design is the incorporation of 4 N-channel mosfet full bridge topology, which in turn demands the incorporation of a bootstrap mechanism for the high side mosfets. Whenever we think of a full bridge or an H-bridge inverter circuit, we are able to identify circuits having specialized driver ICs which makes us wonder, isn’t it really possible to design a full bridge inverter using ordinary components?Īlthough this may look daunting, a little understanding of the concept helps us realize that after all the process may not be that complex. Why Full-Bridge Inverter Circuit is not Easy
