Re: Low power dc-dc converter transformer with multiple isolated secondaries

John Larkin wrote:

On 5 Dec 2006 11:24:43 -0800, "Steve" <stephen.mowry@xxxxxxxxxxx>
wrote:


I'm designing an 8 channel, high performance thermocouple input module
for industrial applications. The specification requires full safety
isolation between the channels (250VAC). The problem is using a
separate dc-dc converter transformer for each channel takes too much
board space. Does anyone have any references or recommendations on the
design of a single transformer with 6-8 fully isolated secondaries? The
dc-dc input in 24VDC and the output requirement is +5V per channel.
Power rating is on the order of 2-3 watts.



http://www.highlandtechnology.com/DSS/V450DS.html

We just used a transformer per channel. Little bitty ones.


Was that the telco transformer from the other thread? How do you manage the 15KV ESD?

--
Regards, Joerg

http://www.analogconsultants.com
.

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