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Re: Single-phase H-bridge inverter circuit


 

Hi Andy,

Thank you so much for your explanation. It was very helpful!

I just have one more question (I hope I¡¯m not bothering you): in our example, the power supply voltage is 5V. But what if our power supply is much higher, say around 300V? The MOSFET needs a gate-to-source voltage (Vgs) that is higher than the source (Vs) to turn on. So, if we keep using a 10V PWM signal referenced to ground, it wouldn¡¯t work properly.

I¡¯ve been researching this, and I came across the bootstrap driver technique. Is this commonly used in such high-voltage applications? Or is there another configuration we should use in this scenario?

Thanks again for your help!

By the way, do you have LinkedIn? I really appreciate your knowledge of LTspice. Congratulations!

Guilherme

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