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SMPS topologies limitations

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rohithkrishnan

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Hi,

In the below link each topology has the power and current limitation.
https://www.smps.us/topologies.html

What makes this limitation? Why can't we produce an smps with 150W and current higher than 10A with flyback topology?

thanks
 

The short answer is that there's no reason you can't build a 1kW flyback, but making that flyback comply with EMC and EMI regulations will be incredibly difficult compared to a full bridge converter. Power density/efficiency will also be much better with more advanced designs.
 
Here is a document on high power flyback smps...
 

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  • Flyback SMPS _330W [+-40V 4A] SMPS _1.doc
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You can do any topology you like..for any application, as long as..

…it is not too big for you
The components don’t overheat
The components don’t get over-powered.
The components don’t get overvoltaged
It passes EMC.
Generally with flybacks, in offline case, they get bad high switching loss because the drain voltage shoots up to vin+v(reflected)+v(clmap) at the off-going, which gives high turn-off switching losses.
 
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