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Interleave synchronous buck converter

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BALKRISHNA TULSYAN

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Dear all,

Can anyone explain how MOSFET switching should takes place in two stage synchronous buck converter.
Normally in synchronous buck converter High side and Low side MOSFET should be switched On alternately but what should be the switching sequence in case of interleave design.

Whether both High side MOSFET should be switched ON at the same time and Low side MOSFET should be switched off at the same time like we normally do with single stage synchronous buck converter or my i misunderstood the concept.

Please correct me if i am wrong.
 

like this in free ltspice simulator for you
 

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  • sync bux.txt
    10.6 KB · Views: 72

how this simulation is going to help. it's a .txt file.
 
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you open it, save it as a .asc file, then open it in the simulator and hit the running man icon.
This forum will not accept .asc files so i had to send it as a .txt

- - - Updated - - -

remember that a full bridge smps is just a two stage interleaved "two transistor forward" converter...but using only one output inductor, unlike the sync buck interleaved , which uses two output inductors.
 

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