Posted by PakProtector [ 205.188.117.72 ] on August 18, 2006 at 22:24:46:

In Reply to: Re: Say John 42 posted by 2wo on August 17, 2006 at 00:54:10:

Hey_Hey!!!,
Another option would be to go CLCLC and drop the inductance of the 'L' stages. Say to 2 Hy each, experiment with capacitance values and see where the final ripple comes equal or perhaps just less than a single stage goes.

Keep in mind that it is not likely that the 'shape' of the resulting ripple voltage is also going to be different with a multi-stage filter compared to a single.

It is my opinion that keeping the DCR low is a good idea. It isn't possible to do it 'all else kept the same' so it shouldn't follow that PS performance is tied to a the value of a single parameter. Either way, examine the performance of the filter as component values change around a reasonable centre, or preliminary value.
cheers,
Douglas

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