On Mon, 23 Jun 2003 19:27:33 +0200, Ofer Saferman wrote:
>=A0Hi,=20
>=A0
>=A0For sensing both ways with a lot of complication you might try hi=
gh=20
>=A0side current sensing. A chip like MAX471 or MAX472 or similar giv=
es=20
>=A0you the current as a voltage across a sense resistor and there is=
=20
>=A0also a sign output that determines the direction.

These amplifiers work exceptionally well and are simple to use. I use=
=20
them in several uninterruptable power supplies (UPS) I designed to=
=20
sense and display in real time both the charge and discharge current =
of=20
the batteries.

I've also used them as an active feedback element in switch mode
battery charger circuits to convert a standard buck regulator to
constant current battery charger.

Really versatile devices for high-side current sensing!

Matt Pobursky=20
Maximum Performance Systems

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