IGBT TO-247 connector/socket/?

D

David Challis

Guest
I'm building an IGBT type lighting dimmer. I will be switching about
20 amps 120v rms AC, varing the phase shutoff angle. The IGBT
(IRG4PC40FD) will be a TO-247AC package mounted on a large heatsink.
The IGBT will not be mounted or soldered directly on a circuit
board. I'm looking for suggestions on how to connect 12 gauge
stranded wire directly to the IGBT leads. Can anyone suggest a
connector product or other idea that will do the trick? I'm looking
for a high reliability solution.

Thanks,

Dave Challis
challis@msn.com
 
A triac design delays the turn on for each 1/2 cycle, and then triggers on.
This causes high dv/dt, with associated high line noise. The triac design
requires a large, high current noise/hash choke to kill the noise as a
result. An IGBT / Bridge design starts each phase with the current on, and
turns the current off late in the cycle. It has a softer turn off, with
much lower dv/dt and little noise. No large inductor is required. Triacs
cannot be dynamically turned off; they turn off only at the zero cross.

However, whether it is a triac or a IGBT in the TO-247 or TO-220 package,
the question is the same: Wha't the best way to connect a large gauge
conductor to the package leads.

Dave
"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F3E888A.5592A516@aaa.com...
Why not a normal Triac design ?
Jan-Erik.

David Challis wrote:

I'm building an IGBT type lighting dimmer.
Click to expand...
 
OK, I see, interesting...
I'm sorry I can't answer your question, but
you don't happen to have a link to some IGBT-dimmer
reference design ? Or app note ?
Jan-Erik.


David Challis wrote:
A triac design delays the turn on for each 1/2 cycle, and then triggers on.
This causes high dv/dt, with associated high line noise. The triac design
requires a large, high current noise/hash choke to kill the noise as a
result. An IGBT / Bridge design starts each phase with the current on, and
turns the current off late in the cycle. It has a softer turn off, with
much lower dv/dt and little noise. No large inductor is required. Triacs
cannot be dynamically turned off; they turn off only at the zero cross.

However, whether it is a triac or a IGBT in the TO-247 or TO-220 package,
the question is the same: Wha't the best way to connect a large gauge
conductor to the package leads.

Dave
"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F3E888A.5592A516@aaa.com...
Why not a normal Triac design ?
Jan-Erik.

David Challis wrote:

I'm building an IGBT type lighting dimmer.
Click to expand...
 
A google search for "IGBT lamp dimmer" produces a lot of good hits.

Here are some links:
http://www.ies.nl/_Main/white_papers/igbt.html


This one has a reference design:
http://us.st.com/stonline/books/pdf/docs/3735.pdf

http://us.st.com/stonline/books/pdf/docs/8415.pdf

Dave

"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F3E976C.1BF264D8@aaa.com...
OK, I see, interesting...
I'm sorry I can't answer your question, but
you don't happen to have a link to some IGBT-dimmer
reference design ? Or app note ?
Jan-Erik.


David Challis wrote:

A triac design delays the turn on for each 1/2 cycle, and then triggers
on.
This causes high dv/dt, with associated high line noise. The triac
design
requires a large, high current noise/hash choke to kill the noise as a
result. An IGBT / Bridge design starts each phase with the current on,
and
turns the current off late in the cycle. It has a softer turn off, with
much lower dv/dt and little noise. No large inductor is required.
Triacs
cannot be dynamically turned off; they turn off only at the zero cross.

However, whether it is a triac or a IGBT in the TO-247 or TO-220
package,
the question is the same: Wha't the best way to connect a large gauge
conductor to the package leads.

Dave
"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F3E888A.5592A516@aaa.com...
Why not a normal Triac design ?
Jan-Erik.

David Challis wrote:

I'm building an IGBT type lighting dimmer.
Click to expand...
 
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