Sujet : Re: tiny dc/dc
De : bill.sloman (at) *nospam* ieee.org (Bill Sloman)
Groupes : sci.electronics.designDate : 29. Mar 2025, 14:51:36
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vs8ttn$1fnrg$1@dont-email.me>
References : 1 2 3
User-Agent : Mozilla Thunderbird
On 29/03/2025 9:25 am, john larkin wrote:
On Fri, 28 Mar 2025 16:49:23 -0400 (EDT), Martin Rid
<martin_riddle@verison.net> wrote:
john larkin <jl@glen--canyon.com> Wrote in message:r
Check out UCC33420. It's a tiny cheap isolated dc/dc converter. It switches at 64 MHz!
>
Why does it have such poor esd ratings?
The ucc33421 is better, but not 15kv.
Cheers
Right now I dodn't need kilovolts of isolation. I want to make a GaN
totem-pole driver and want a floating power supply for the high side,
but I want very low switching noise for low jitter on the rising edge.
I might try one of these with a bunch of added filtering. It might be
better than some dc/dc that works in the 100 KHz sort of ballpark.
Or it might be much worse.
The obvious difference is the operating frequency. If you were particularly worried by 64MHz noise, the high frequency part might present a problem. With a particularly skilled designer, it might not.
Why not buy one and find out?
-- Bill Sloman, Sydney
tiny dc/dc
Re: tiny dc/dc