Alexandre Guimaraes wrote:
>>  Enable input
>>  switching pulse output
>>  output voltage feedback input
>>  power good output
>
> I would not have the power good output.

You don't need it, but I find it often useful.  It's a great way to drive
the MCLR input of any PIC that will be running from the power supply.  If
power demand is low until power good is asserted, it also helps with power
supply startup.

In a current project I've got a chain of 3 10Fs.  The first two control
switching power supplies, and the last is a watchdog and reset controller.
Each waits bout 65mS after its enable input has been continuously asserted
before starting up.  The output of the last releases the reset lines of a
30F4011 and some other logic.  This is a cheap but very effective way to
deal with power supply startup, power supply sequencing, and main processor
reset/run.


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist