Infineon CoolMos 900V part

where to get parts for building your own transmitter.

Infineon CoolMos 900V part

Postby John K5PRO » Wed Apr 09, 2008 2:22 pm

Infineon (was it Seimens years back?) has a new line of Powermosfets for 900 V.

The IPW90R340C3 has Rds of 0.34 Ohms, and Qg=93 nC. 15 Amp part. Ciss = 2400 pF. They have a new (4/08) App note on their webpage online.
John K5PRO
Member
 
Posts: 19
Joined: Tue Oct 05, 2004 6:20 pm
Location: Santa Fe County, NM

Re: Infineon CoolMos 900V part

Postby steve_qix » Wed Apr 09, 2008 3:30 pm

We'll have to see what the "real" product looks like :P The prelim info is a bit sketchy - no turn on and off delays and no reverse-transfer capacitance.

The 2400pF of capacitance suggests a smaller die, although the reported R D-S on is very good for that input C and at the reported voltage.

It'll be very interesting to see what the final specs are, and of course how much the devices cost :D

Good info! Thanks for posting it.

Regards,

Steve
Visit the class E web site at:

http://www.classeradio.com
User avatar
steve_qix
Class E Guru
 
Posts: 434
Joined: Fri Jan 31, 2003 11:03 am
Location: Townsend MA

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Wed Apr 09, 2008 6:18 pm

Hi,
I agree with Steve that they have not posted some pretty important numbers like rise times and recovery times too. Reverse transfer C looks very good and the device is rated at a pretty high current too and the thermal numbers look good too. Series gate resistance is higher than some of the other bigger Infineon FETS at 2.2 ohms, but the input and output Cs and the Css look fantastic. Fairchild doesn't list the input gate resistance on the FQA11N90s. If the rise and fall times are fast I will want to get some. I already emailed a distributor and will call a factory REP for Infineon tomorrow to find out if samples are available and when they will be out. We can hope that a new and better one will come out at any time, but we will have to wait ,apparently because Infineon has only a promise out now and little details.
Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby kf1z » Wed Apr 09, 2008 6:29 pm

I thought Fairchild listed a Rg of 25ohms.

Unless that spec was for a gate resistor used for a particular test?
User avatar
kf1z
Senior Contributer
 
Posts: 558
Joined: Sat Mar 18, 2006 7:07 am
Location: Ely, NV.

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Wed Apr 09, 2008 10:12 pm

Hi Bruce,
My STB11NM80s have a gate resistance of 2.9 ohms, I believe. I don't think they list the Gate resistance on the Fairchlld site. Some other bigger FETs have resistances down to 0.7 ohms. It does change the amount of time to charge and discharge the gate and of course, it generates heat when you do it millions of times per second...
Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby kf1z » Thu Apr 10, 2008 6:36 am

The Rg that I saw is on the Data sheet......

I looked again, and it refers to an external resistor used for testing parameters.
User avatar
kf1z
Senior Contributer
 
Posts: 558
Joined: Sat Mar 18, 2006 7:07 am
Location: Ely, NV.

Re: Infineon CoolMos 900V part

Postby steve_qix » Thu Apr 10, 2008 1:07 pm

kf1z wrote:The Rg that I saw is on the Data sheet......

I looked again, and it refers to an external resistor used for testing parameters.


That is the usual parameter. I don't know if I've seen the internal gate resistance published for standard MOSFETs. I have seen it for RF MOSFETs in special packages, etc.

But, usually Rg refers to the resistance of the test generator.

Regards,

Steve
Visit the class E web site at:

http://www.classeradio.com
User avatar
steve_qix
Class E Guru
 
Posts: 434
Joined: Fri Jan 31, 2003 11:03 am
Location: Townsend MA

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Thu Apr 10, 2008 6:26 pm

Hi Steve,
I am not sure, but I think that at least ST makes a distinction between Rg and RG.
Look at table 6 on the STB11NM80 that I am thinking of using.
http://www.st.com/stonline/products/lit ... 11nm80.pdf
They list the Rg on one line at 2.7 ohms
and then the next line they show the rise time data with a 4.7 ohm resistance RG (R with capital G).
If you look later in the document, they do show a series resistance for that test, but I suspect that the Rg is what it says it is, the gate series resistance. ST always posts this in it's data and I think Infineon does too, but Fairchild does not show it on any of the devices that I have looked at. What do you think?
Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby kf1z » Thu Apr 10, 2008 8:25 pm

For some Fairchild parts, you can find out the Rg (and other figures) by looking at the spice model data.

Unfortunately, the list of models for Fairchild parts is fairly small.
User avatar
kf1z
Senior Contributer
 
Posts: 558
Joined: Sat Mar 18, 2006 7:07 am
Location: Ely, NV.

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Thu Apr 10, 2008 9:38 pm

Thanks Bruce, I had not checked that out. I wanted to see what the FQA11N90 had if they have a spice model for it.
Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby kf1z » Mon Apr 14, 2008 7:10 pm

mdburke-K9MB wrote:Thanks Bruce, I had not checked that out. I wanted to see what the FQA11N90 had if they have a spice model for it.
Mike


Nope, they don't.

I checked that a while ago....

I can build my models from the data sheets...
BUT, one of the parameters is the Rg!!

Can that be calculated?

Knowing the voltage/current through the gate to source?

No, maybe not, cause that would include other things wouldn't it?

Not sure
User avatar
kf1z
Senior Contributer
 
Posts: 558
Joined: Sat Mar 18, 2006 7:07 am
Location: Ely, NV.

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Tue Apr 15, 2008 1:29 pm

HI Bruce,Frank and anyone else interested..
I have been looking around for the spice files, etc. I easily found my STP11NM80 spice model on the ST site, but Fairchild doesn't have data published on the FQA11N90 that I can find..

Here is the stuff I found:
nice articles on the Infineon site on modeling FETS
http://www.infineon.com/cms/en/product/ ... all+groups
http://www.infineon.com/dgdl/an_psm3e.p ... 0a482e04eb
ST site articles and spice data for their FETs:
http://www.st.com/stonline/products/fam ... ircuit.htm
http://www.st.com/stonline/books/pdf/docs/3674.pdf

Here is a text model of the STW12NK90Z, which is sold as a replacement for the FQA11N90, but that doesn't mean it is the same exactly, but should be close anyway. ST is much better at providing this kind of data, unless I am missing it at Fairchild's site.

* MODELLING FOR STW12NK90Z

.SUBCKT STW12NK90Z 1 2 3
LG 2 4 7.5n
LS 12 3 7.5n
LD 6 1 4.5n
RG 4 5 1.995
RS 9 12 0.172E-02
RD 7 6 0.516
RJ 8 7 0.574E-02
CGS 5 9 0.323E-08
CGD 7 10 0.445E-08
CK 11 7 0.559E-10
DGD 11 7 DGD
DBS 12 6 DBS
DBD 9 7 DBD
MOS 13 5 9 9 MOS L=1u W=1u
E1 10 5 101 0 1
E2 11 5 102 0 1
E3 8 13 POLY(2) 6 8 6 12 0 0 0 0 0.299E-01
G1 0 100 7 5 1u
D1 100 101 DID
D2 102 100 DID
R1 101 0 1MEG
R2 102 0 1MEG
.ENDS STW12NK90Z

.MODEL MOS NMOS
+ LEVEL = 3
+ VTO = 4.542
+ PHI = 1.018
+ IS = 0.1E-12
+ JS = 0
+ THETA = 0.789E-01
+ KP = 13.738

.MODEL DGD D
+ IS = 0.1E-12
+ CJO = 0.156E-10
+ VJ = 0.709
+ M = 0.339
.MODEL DBD D
+ IS = 0.1E-12
+ CJO = 0.147E-10
+ VJ = 0.779
+ M = 0.335
.MODEL DBS D
+ IS = 0.1E-12
+ BV = 969
+ N = 1
+ TT = 0.964E-06
+ RS = 0.559E-02
.MODEL DID D
+ IS = 0.01E-12
+ RS = 0
+ BV = 979
* END OF MODELLING


Fairchild has some spice models for some FETs, but not the FQA11N90. I tried to find an easy way to email them and ask for it but could not easily find an email address. Not a very friendly website for engineers.... ST much better in terms of supplying data, etc.
Here is a search result on Fairchild's site on Spice modeling:
http://www.fairchildsemi.com/sitesearch ... ender=1&w=

I guess we can read their articles and read ST articles on the models and see how they might be used together, or just use the ST equivalents if you actually want to know the real data on them....
Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Thu May 29, 2008 1:34 pm

regarding availability of the Infineon IPW90R340C3:

Here is an update on what I have been able to find out about this part.
Still no complete data but I can order them now if I want with a 12 week lead time from Mouser.
Problem is it is NON-CAN_NON-RET and minimum of 240 pieces
plus price is $10.20 each. :shock:
Don't chuck your good ole FQA11N90s yet, boys! 8)
I am going to lean on Infineon to cough up the data and see if I can sweet talk someone out of a smaller quantity or some samples to see if they are really worth $10+ each....
Back with more when I can find out anything else
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Re: Infineon CoolMos 900V part

Postby kf1z » Thu May 29, 2008 4:13 pm

Well, before you get to worried about those.....

Check out E-bay for IXYS FETs...

There's at least one seller with a bunch of "good ones"
User avatar
kf1z
Senior Contributer
 
Posts: 558
Joined: Sat Mar 18, 2006 7:07 am
Location: Ely, NV.

Re: Infineon CoolMos 900V part

Postby mdburke-K9MB » Thu May 29, 2008 5:16 pm

Hi Bruce,
Not sure which IXYS part you mean. Do you mean the Fairchild FQA11N90s? I know there is a guy selling those, but I think that Steve also had some of them as well, and maybe at a better price.

I am not imminently going to order any of these $10.20 wonders without data, never fear- and I know I am not going to cough up over a couple of grand for 240 of them, even if they are great.
I am just doing research and if they turn out to be good, the price will go down sometime.

Mike
mdburke-K9MB
Class E Enthusiast
 
Posts: 122
Joined: Thu Feb 21, 2008 5:36 pm
Location: Murphysboro IL

Next

Return to Parts and Sources

Who is online

Users browsing this forum: No registered users and 2 guests

cron