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On 5/8/2024 10:04 PM, John Larkin wrote:On Wed, 8 May 2024 19:40:49 -0400, bitrex <user@example.net> wrote:>
On 5/8/2024 6:32 PM, john larkin wrote:On Wed, 8 May 2024 17:15:27 -0400, bitrex <user@example.net> wrote:>
>On 5/8/2024 10:28 AM, John Larkin wrote:>
>>Jill Biden reportedly told her husband some time ago to Stop it, Joe,>
stop it now. Good advice that he continues to ignore at his peril,
and ours.
>
https://mondoweiss.net/2024/05/genocide-joe-is-beginning-to-stink-like-lyndon-b-johnson/
>
What's your favorite SiC mosfet?
>
Why no buy WOLFSPEED:
>
<https://www.mouser.com/ProductDetail/Wolfspeed/C3M0280090D?qs=nxZbHzLpdvfcUe1hs5VeOQ%3D%3D>
What's wrong with that one?
>
I've used C2M0280120D and it works fine. Gate drive is a nuisance, but
that's true for all pure SiC parts.
>
Ope, I meant to write "why not buy...", it looked like a nice part. More
standoff voltage than I'm accustomed to requiring for most projects,
though.
>
I may have a need to roll my own hysteric synchronous buck soon, at an
astounding 12V..
>
That's not SiC territory. Possibly GaN if you want a tiny MHz
switcher.
SiC has amazingly low capacitances compared to high-voltage silicon.
But the gates have to swing to levels like +15 and -5. Fast.
Why design a switcher, unless it's for fun. You can get a whole 2-amp
buck switcher, great internal reference, current and thermal limited,
spread spectrum, for 19 cents.
>
Indeed there's lots of stuff off the shelf but for the application I
have in mind the it's is acting more like a low frequency
self-oscillating Class D, tracking a control voltage.
>Eventually some damned IC jock intgrates our fun circuits.>
It's the future now, we can design our own mixed-signal ICs at the local
Starbucks, the IC jocks don't have to have all the fun.
>
<https://www.renesas.com/us/en/document/dst/slg46140-datasheet>
>
And I can integrate some other functions, too. Look at all the fun parts
you get for 40 cents in small quantity. These things have been solid
money-makers for me so far
>
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