> Could you comment on what effect frequency has - for example
> choice of capacitor value and if the reactance has any bearing
>=20
> I'll try a cascade and see how it compares with an inductor design,
> and report back
>=20
> I've nothing in particular against inductors (apart from finding or
> winding one), and it would mean a lower parts count for a better
> output that could be stabilised more easily. For example, if Vee is
> more or less loaded depending on the number of active pixels
> that might rule out a cascade design if regulation is also loading it

If you have a spare comparator or ADC channel, and PWM on the chip, I would=
 look at using a transistor, inductor, diode, and some resistors, as Russel=
l suggested, changing the PWM value to regulate the output voltage,
--=20
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