On 11/1/07, Russell McMahon <apptech@paradise.net.nz> wrote:
> >> Also, I should look into creating my own inductors on the
>>> PCB with bare traces.
> >>
> >> Anyone have links to how the math is done for this, and
> >> recommendations for
> >> layouts, etc?
>
>
> Microchip AN710, which is targeted squarely at RFID
> applications, has good information on PCB inductors.
>

Hmm, now I know where Neil comes from. However, I am not
so sure if pure PCB traces will be good enough for normal
DC/DC converter applications. I think a magnetic core will
be necessary (planar core).

Xiaofan
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