current limiting PS and PIC

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I am looking to design a current limited, 2-6A, power supply controlled
by a PIC.  Consumer electronic "smart microprocessor"  battery chargers
seem to know how to regulate the current.

Any thoughts?

Re: current limiting PS and PIC

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Google for "foldback current limiting" w/o quotes


Re: current limiting PS and PIC

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I am trying to remember if there was an explanation of the linear version
of a foldback current regulator in Horowitz & Hill. Adding a microprocessor
control to that should not be too difficult. You should, however, look
quite closely at the consequences of losing control of the voltage and
current outputs. You will need to make sure that you know, should the
microprocessor suddenly halt with a fault, the outputs attain a safe state
(most likely off).

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