[volt-nuts] volt-nuts Digest, Vol 56, Issue 9

Poul-Henning Kamp phk at phk.freebsd.dk
Mon Apr 14 16:48:46 EDT 2014

In message <CAFoWNwDa3sDE3RgQgqh350P9X-=td1H9dn342GXD_wDDTtvZww at mail.gmail.com>
, Jan Fredriksson writes:

>I noted that they use a 390pF integration cap which made me wonder what
>kind of switches where used, as any FET capacitance / charge would have to
>be compensated / cancelled / nulled somehow.

It's described how they cancel it, by always doing a switch both
"up" and "down" but of different lengths to get the desired result.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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