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Groups > sci.electronics.design > #433698
| From | Winfield Hill <hill@rowland.harvard.edu> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: ping Win, SiC fets |
| Date | 2016-11-03 11:29 -0700 |
| Organization | Rowland Institute |
| Message-ID | <nvfvm20koo@drn.newsguy.com> (permalink) |
| References | (4 earlier) <d13l1c9c4h4k8fab23q8ie4kdqk0bari9b@4ax.com> <nve4800gli@drn.newsguy.com> <sfnm1cdhvrb1jkmb3fe2e3f3t300k3j38n@4ax.com> <nvfsqd0eec@drn.newsguy.com> <7ium1cd84a5cluoauv6kpl1u26tin277bm@4ax.com> |
John Larkin wrote...
>
> Can you reveal what you're using for gate drivers?
Hah, I now have 6 different versions of the board,
with six different gate-driver approaches, trying
to reach my 10MHz repetition-rate goal. I'm not
happy with any of them. My latest scheme gives up
on TO-220 driver ICs, and uses a fast recent-vintage
driver. I suffer its poor thermal properties, and
add NPN and PNP emitter-followers to handle some of
the C V^2 f power dissipation. Note that SiC MOSFETs
have 1/4 the capacitance but require twice the gate
voltage, hence 4x more power killing that advantage.
The dissipation is now shared by two 1812 resistors,
two sot-223 BJTs and the driver IC. The latter has
a heatsink.
--
Thanks,
- Win
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ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:17 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 15:36 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:58 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:50 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 18:02 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 18:34 -0700
Re: ping Win, SiC fets TTman <pcw1.cad@ntlworld.com> - 2016-11-03 08:52 +0000
Re: ping Win, SiC fets Martin Brown <|||newspam|||@nezumi.demon.co.uk> - 2016-11-03 09:24 +0000
Re: ping Win, SiC fets Jeroen Belleman <jeroen@nospam.please> - 2016-11-03 10:25 +0100
Re: ping Win, SiC fets John S <Sophi.2@invalid.org> - 2016-11-03 07:11 -0500
Re: ping Win, SiC fets Jeroen Belleman <jeroen@nospam.please> - 2016-11-03 14:32 +0100
Re: ping Win, SiC fets Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-11-03 09:00 -0700
Re: ping Win, SiC fets John S <Sophi.2@invalid.org> - 2016-11-06 17:47 -0600
Re: ping Win, SiC fets Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-03 09:29 +0000
Re: ping Win, SiC fets TTman <pcw1.cad@ntlworld.com> - 2016-11-03 11:43 +0000
Re: ping Win, SiC fets Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-03 12:16 +0000
Re: ping Win, SiC fets upsidedown@downunder.com - 2016-11-03 18:56 +0200
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 08:59 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 10:40 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 11:02 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 11:29 -0700
Re: ping Win, SiC fets dagmargoodboat@yahoo.com - 2016-11-02 15:42 -0700
Re: ping Win, SiC fets John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-02 15:54 -0700
Re: ping Win, SiC fets dagmargoodboat@yahoo.com - 2016-11-02 17:10 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:53 -0700
Re: ping Win, SiC fets Winfield Hill <hill@rowland.harvard.edu> - 2016-11-02 17:54 -0700
Re: ping Win, SiC fets Cursitor Doom <curd@notformail.com> - 2016-11-03 15:38 +0000
triacs and electronics engineering Winfield Hill <hill@rowland.harvard.edu> - 2016-11-03 10:46 -0700
Re: triacs and electronics engineering Gunther Heiko Hagen <guntherxxx@quantserve.de> - 2016-11-03 18:01 +0000
Re: triacs and electronics engineering John Larkin <jjlarkin@highlandtechnology.com> - 2016-11-03 11:40 -0700
Re: triacs and electronics engineering Jon Elson <jmelson@wustl.edu> - 2016-11-03 13:56 -0500
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