My statement still stands. I've never seen a switching regulator
that ran at 1Mhz. Just because the chip is capable of 1Mhz does
not mean that that is the switching speed of the regulator. Most
of the design engineers I'm familiar with tend to be conservative.
Your opinion is not that important. Opinions are like tailpipes,
everyone has one, except for those like you who have theirs transposed
with their induction system. FLNF
Funny Little Nose Fart, it's the sound you make when you
laugh with your mouth closed. Then there is FLNFWSp, which
is Funny Little Nose Fart With Spray. It happens when you
see an intellectual post from krw and you have a mouthful
of your preferred beverage.
While I don't condone is attitude, he is absolutely correct. MHz
switchers are common, have been in the field for years, and by the
demands for miniaturization are getting more common all the time. If you
don't believe me, pop open your PC, cell phone, PDA, etc and put a scope
on one of the DC-DC converters. Also with many of these chips, the
switching frequency is fixed and is not something the engineer has a
choice of. The duty cycle varies to regulate the output.
This is not something you'll find in the line operated power supply, but
applications like CPU core voltage which may have to supply less than 2V
at 50-80+ Amps (no, that's not a typo) from a 12V source where board
space is a valuable commodity, or applications needing extreme
miniaturization demand this sort of thing.
Thanks, I just looked at the products available from:
I've used their other products for years but I was not aware
of their switching regulator chips. The original discussion
concerned "SIMPLE" DC power supplies and some jerk chimed in
calling everyone stupid, etc. My experience has been with the
switching power supplies in computers and test gear which is
what I thought the discussion was about. I've never seen one
of those running at 1Mhz or more. A tiny regulator on a card
or motherboard running at 1Mhz or more is something new to me.
Heck, I learn something new everyday.
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