On Mon, Dec 15, 2003 at 09:04:19PM -0800, Peter Vogel enlightened us
thusly
> Anyone got any ideas for a low-cost micropower switching regulator
> that will down convert 5-10 volts to 3 volts at a couple of milliamps
> and do so efficiently?
>
> Doesn;t have to be a single-chip solution, but must be low cost and
> low power.
If you don't have a minimum current figure, go linear
If you do, you might be able to use the same current twice as follows:
Before your inductor & grounded diode, have
1. A standard enough step down switch with a blocking
capacitor in series.
And more or less in parallel with the above
2. A switch to drain the capacitor i.e. _across_ that
capacitor also feeding into the circuit.
It would be hard to beat that for efficiency.
Fire each one in turn, and patent it. Go scribbling a design, and send
me a case of vino for my nutty idea :-)
--
With best Regards,
Declan Moriarty.
--
Author: Declan Moriarty
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