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AC simulation of Boost converter in LTspice or any other

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mavrik2k

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Hello,
Every one . I am interested in simulation of gain and phase of boost converter in open loop first . To really see the RHPZ . But i am not aware how to simulate it

Any help would be great

regards
 

Hello, Mavrik2k.

you can take a look on this texas pdf, which explains how to creat a small-signal model for buck-boost switches:
**broken link removed**

regards,

Filipe
 

You would need to state-space-average the switching
portions to do a small signal analysis. But because the
conduction mode can change, so can the model
fundamentals - a tricky problem if indeed your design
will see both CCM and DCM.
 

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