On Tue, 7 Jan 2014 14:55:39 -0600, "Tim Williams"
wrote:
Sure, if you like flappy gates.
Also, who would buy an inductor when three BJTs does as well?
I did the inductor thing years ago, must've been like 2008ish. Plus a
transformer:
http://seventransistorlabs.com/Image...off_Driver.png
But I'd much rather spend a few cents and as many watts with a CCS turnoff
than a few bucks inductor. Better still, just use H bridge drive (TL598).
Tim
I guess you didn't observe the load current?
In general I'd guess your attention span is limited :-} The need is
for a high side driver, controlled by a 3.3V logic signal.
And the inductor is ~7 cents in the quantities used by my customer,
and he's very cramped for space.
(In addition, schematic has been munged to hide details... customer
only has +3.8V high-side supply, which must deliver 8 Amps to load
with minimal drop.)
...Jim Thompson
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