Stabilizing buck converters with transconductance

[radellaf]

News bit I thought you might like
----
TECHNOLOGY INSIGHTS

--Stabilizing buck converters with transconductance
amplifiers--
Synchronous buck converters are popular in low power,
low voltage DC-DC converter applications for their high
efficiency. In this application note, International
Rectifier engineers show how to stabilize buck
converters using a transconductance device as the error
amplifier in the voltage regulation circuit. A
transconductance amplifier, they point out, multiplies
the difference of input voltage with a certain gain to
generate a current into the output node. These
engineers show the principles of operation - all the
math - as well as some useful circuits for achieving
fast load response and good steady state output.
http://newsletter.planetanalog.com/cgi-bin4/flo?y=eJhr0EFHuz0tJ0BmOg0Au

 

[MrAl]

Hello,

I took a quick look. Looks interesting, but
i noticed that in the end designs quite a few
parts are required. Not sure if this would
be acceptable for flashlights, except for
very large ones.

IRF sure does make some great Hexfets though.

Good luck with your LED circuits,
Al