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Swithching regulator (Buck Converter) with LTSpice question

RobinLeblond

Oct 20, 2018
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Oct 20, 2018
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Hello, I'm in the process of learning switching regulator and I'm using LTSpice as a simulator and teaching help. I found a video on YouTube explaining the SR, and I did exactly what it was demoed and didn't get the same results.

Simply said, I getting the same result but with a 300mV at the output instead of 5.6V, why ?

Here is the link of the video :

In attachment, you will find my LTSpice schema and a few screenshots.

Thanks a lot!
 

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Last edited:

Harald Kapp

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Nov 17, 2011
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That is rather logical as you've set D=0.05 whereas in the video it is D=0.5.
1/10 duty cycle -> 1/10 output voltage (roughly).

Cheers,
Harald
 
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