Can off-the-shelf inductor handle skin effect loss?
Can off-the-shelf inductor handle skin effect loss?
(OP)
Hello
Please could you tell if an off-the-shelf inductor will be ok for our requirement?
Eg will this inductor be ok....
2209-RC (47uH from Bourns.com)
http://w ww.bourns. com/data/g lobal/pdfs /2200_seri es.pdfhttp ://www.bou rns.com/da ta/global/ pdfs/2200_ series.pdf
It is the output inductor on a half-bridge smps.
It will see a Max current of following
Average current = 4 Amps.
RMS current = 4.4 Amps.
Peak current = 6.7 Amps
Ripple frequency = 111KHz.
The di is quite high (5.1Amps)
i.e. 5.1 Amps at the switching frequency (111KHz)
We need a high ripple in the inductor to improve our transient response.
Will an off-the shelf inductor with a single winding be ok, or will we need to custom build, with multiple strand conductors to mitigate skin effect?
Please could you tell if an off-the-shelf inductor will be ok for our requirement?
Eg will this inductor be ok....
2209-RC (47uH from Bourns.com)
http://w
It is the output inductor on a half-bridge smps.
It will see a Max current of following
Average current = 4 Amps.
RMS current = 4.4 Amps.
Peak current = 6.7 Amps
Ripple frequency = 111KHz.
The di is quite high (5.1Amps)
i.e. 5.1 Amps at the switching frequency (111KHz)
We need a high ripple in the inductor to improve our transient response.
Will an off-the shelf inductor with a single winding be ok, or will we need to custom build, with multiple strand conductors to mitigate skin effect?





RE: Can off-the-shelf inductor handle skin effect loss?
Unless someone here magically knows how the rest of your circuit works, how is anyone going to know whether you can tolerate the skin effect?
TTFN
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RE: Can off-the-shelf inductor handle skin effect loss?
http://www.coilcraft.com/apps/loss/loss_2.cfm
RE: Can off-the-shelf inductor handle skin effect loss?
Now, as for an inductor on the output what you are trying to create is DC, and as such you don't generally wind it for skin effect as you want to attenuate any higher frequency components. It's the same situation for inductors on an input filter - you are not trying to pass the high frequency but [/i]attenuate[/i] it. Although the attenuation of HF from skin effect will be small, at least it will be attenuating.
Now, if the ripple amplitude on your output inductor is high enough that serious heating may occur from skin effect, then that heating is the least of your problems as you will never get it through FCC (or whatever regulatory agency standard you test to).