At 01:03 PM 12/8/2011, you wrote:
>Very nice!.  Would anyone care to share recommendations for best practices
>in regard to safety in the design/construction of a typical consumer devic=
e
>incorporating this chip?  I saw the recommended PCB layouts and am
>interested in (non-obvious) ideas to ensure safety of a user of a product
>using this device.

What do you consider obvious? There should be adequate creepage distance
(maybe 8mm, depending on conditions and voltage it might even be more) betw=
een
anything potentially accessible to the user and anything whatsoever connect=
ed
to the circuit.

Certain exceptions might be possible (a small value Y2 safety-rated
capacitor, for example).

In the bad old days, you'd have a "hot chassis" device such as a 5-tube rad=
io
or TV, and if the push-on knob was pulled off and you touched a metal shaft=
,
or you reached under and touched the screws going through the Bakelite case
to the metal chassis you could get a potentially fatal shock. That sort
of thing is no longer considered acceptable.

--sp =20

--=20
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