Query about big IGBT

[Paul Burridge]

Hi chaps and HNY.

I've acquired some 600V igbts in the chunky, chock-block S0T-227B
package. Though they're optimised for SMPSs, I plan to use them in
electronic ignition to fire the primary of the ignition coil in short
bursts of around 10Khz. They have an inbuilt "hyperfast anti-parallel
diode" across the collector/emitter. Is this diode just for static
protection or is it designed to perform as a snubber? The datasheet
doesn't say and probably assumes the designer knows what they're
doing, which obviously I don't. Can anyone disabuse me of my
ignorance?

Thanks.
--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[Paul Burridge]

On Sat, 1 Jan 2005 08:43:26 -0700, "Fritz Schlunder" <me@privacy.net>
wrote:

Greetings Burridge.

Greetings, Schundler,

If would be helpful if you told us what the IGBT part number you have,
and/or provide us with a link to the datasheet.

I'm most awfully sorry. Here it is:
http://www.fairchildsemi.com/ds/HG/HGT1N30N60A4D.pdf

--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[Fritz Schlunder]

"Paul Burridge" <pb@notthisbit.osiris1.co.uk> wrote in message
news:4kkdt0luide30u7qdr8m8l963f62st99du@4ax.com...

If would be helpful if you told us what the IGBT part number you have,
and/or provide us with a link to the datasheet.

I'm most awfully sorry. Here it is:
http://www.fairchildsemi.com/ds/HG/HGT1N30N60A4D.pdf

Ah yes... Figures 19-22 characterize the antiparallel diode's performance.
If it were a discrete part it looks like it would be rated for somewhere
around 30A DC.

By the way. Those are some nice IGBTs you got there. Try not to blow them
up, lest I weep for them.

 

[Active8]

On Sat, 01 Jan 2005 10:40:30 -0700, Jim Thompson wrote:

On Sat, 1 Jan 2005 08:43:26 -0700, "Fritz Schlunder" <me@privacy.net
wrote:


"Paul Burridge" <pb@notthisbit.osiris1.co.uk> wrote in message
news:cdedt01rr13m4sjnpo6n3nfgpp434c4m44@4ax.com...
Hi chaps and HNY.

I've acquired some 600V igbts in the chunky, chock-block S0T-227B
package. Though they're optimised for SMPSs, I plan to use them in
electronic ignition to fire the primary of the ignition coil in short
bursts of around 10Khz. They have an inbuilt "hyperfast anti-parallel
diode" across the collector/emitter. Is this diode just for static
protection or is it designed to perform as a snubber? The datasheet
doesn't say and probably assumes the designer knows what they're
doing, which obviously I don't. Can anyone disabuse me of my
ignorance?

Thanks.


Bwahahahaha! 10KHz! Bwahahahaha!
^ k... 10 kHz

No shit. Why not modulate the spark from the stereo and run open

headers?

Happy New Year.
--
Best Regards,
Mike

 

[Paul Burridge]

On Sat, 1 Jan 2005 10:38:12 -0700, "Fritz Schlunder" <me@privacy.net>
wrote:

"Paul Burridge" <pb@notthisbit.osiris1.co.uk> wrote in message
news:4kkdt0luide30u7qdr8m8l963f62st99du@4ax.com...

If would be helpful if you told us what the IGBT part number you have,
and/or provide us with a link to the datasheet.

I'm most awfully sorry. Here it is:
http://www.fairchildsemi.com/ds/HG/HGT1N30N60A4D.pdf


Ah yes... Figures 19-22 characterize the antiparallel diode's performance.
If it were a discrete part it looks like it would be rated for somewhere
around 30A DC.

By the way. Those are some nice IGBTs you got there. Try not to blow them
up, lest I weep for them.

I shall so endevour, hence the original question.

I see via Google that Jim T. is risking a total, inadvertant, colonic
evisceration by laughing too violently at my original question. Can
some kind soul fill me in on what's supposed to be so funny?

thanks.

p.
--

"What is now proved was once only imagin'd." - William Blake, 1793.

 

[Mike Diack]

Paul Burridge <pb@notthisbit.osiris1.co.uk> wrote in
news:ev6jt0d5cap901n1bml5teq5jgi3bkrnhk@4ax.com:

On Mon, 03 Jan 2005 04:31:27 GMT, Richard the Dreaded Liberal
eatmyshorts@doubleclick.net> wrote:

It's his inherent superiourity at knowing how to desigh GHz crap, he
laugs in disdainful arrogance at your usage of such an elite part at
an unworthy mere 10 kHz.

Do you really think so? What a bloody stupid outburst even by his
standards, in that case. The application (a giant, state-of-the-art
15" calibre spudgun......

Ya gads...What's this thing going on? A cardboard replica of the
Bismarck? "Scrapheap Challenge"?
Please publish results and design details....Please!
M
(BTW-where are you going to find a 15" spud ?)

 

[Richard the Dreaded Liber]

On Mon, 03 Jan 2005 19:31:08 +0000, Paul Burridge wrote:

On Mon, 03 Jan 2005 04:31:27 GMT, Richard the Dreaded Liberal
eatmyshorts@doubleclick.net> wrote:

It's his inherent superiourity at knowing how to desigh GHz crap, he laugs
in disdainful arrogance at your usage of such an elite part at an unworthy
mere 10 kHz.

Do you really think so? What a bloody stupid outburst even by his
standards, in that case. The application (a giant, state-of-the-art
15" calibre spudgun that I've been drafted in to assist in the
development of)

Where do you get 15" calibre spuds? Brobdingnag?

THanks!
Rich

 

[Paul Burridge]

On Mon, 03 Jan 2005 21:54:03 GMT, Mike Diack
<moby@kcbbs.gen.middleearth> wrote:

Ya gads...What's this thing going on? A cardboard replica of the
Bismarck? "Scrapheap Challenge"?
Please publish results and design details....Please!

I'd love to, but spudgunning is a *highly* competitive, innovative,
cutting-edge sport in the UK and the guy who built is has forbidden us
from taking any photos of it, I'm sorry to say.

M
(BTW-where are you going to find a 15" spud ?)

We're on watermelons nowadays. 300yds so far but there's more to come,
I'm sure.
And we thought the Yanks were nuts!

--

"What is now proved was once only imagin'd." - William Blake, 1793.