Hi all I was wondering if anyone could suggest any manufacturers of power IGBT's that do not have parallel diodes, I am struggling to find any they need to withstand a max of 600V and 450A.

Thanks
Art

 

Seriously ?
Do you know Google ?

 

Why do you need such feature?
Try searching for reverse blocking igbt, but I think you will be dissapointed.

 

I think the diode is intrinsic to the IGBT manufacturing process so I don't think you will find any without it.

 

Hi all I was wondering if anyone could suggest any manufacturers of power IGBT's that do not have parallel diodes, I am struggling to find any they need to withstand a max of 600V and 450A.

Thanks
Art

The body diode is certainly inherent in a MOSFET, I think it may also be in the IGBT.

The only option might be a blocking rectifier in series with the load.

 

 

View attachment 120848

I'd steer clear of a reference source that thinks that's the IGBT equivalent circuit.

The IGBT is essentially a MOSFET with an emitter follower hung from its drain. The B/E junction is in series with the MOSFET body diode and in the same direction, so a blocking rectifier in series with the load would be required by the TS.

 

I'd steer clear of a reference source that thinks that's the IGBT equivalent circuit.

Attached is the complete application note so members can decide it's worthiness themselves...

 

Attached is the complete application note so members can decide it's worthiness themselves...

That document describes a; "PT IGBT" - which seems to be not the same thing as an IGBT without the "PT" prefix.

 

I think the diode is intrinsic to the IGBT manufacturing process so I don't think you will find any without it.

no they do exist for example: http://www.vishay.com/modules/list/product-95766/

 

Seriously ?
Do you know Google ?

Are you kidding me stop wasting time I have obviosuly tried google

 

no they do exist for example: http://www.vishay.com/modules/list/product-95766/

Yes, but the fact that they don´t have the diode doesn´t mean they can withstand reverse voltage. Again, why do you need such a feature?

I found this article https://www.powersystemsdesign.com/...-modules-a-novel-possibility-with-rb-igbts/95

A conventional IGBT has forward and reverse blocking capability. So theoretically, we can use the IGBT to block reverse voltages equivalent to the IGBT forward voltage rating. However, practically, this is not true. Under reverse bias, there is a leakage current, the dependence of this current on reverse voltage is exponential.

 

Are you kidding me stop wasting time I have obviosuly tried google

I found this Googling.
If you wish you can leave out the diode

 

I found this Googling.
If you wish you can leave out the diode

may I ask what you searched for?

 

Yes, but the fact that they don´t have the diode doesn´t mean they can withstand reverse voltage. Again, why do you need such a feature?

I found this article https://www.powersystemsdesign.com/...-modules-a-novel-possibility-with-rb-igbts/95

I am using it in a DC application and purely using it as a switch the benefits of the diode will no long will be used with the application I had in mind

 

I just googled "450A IGBT without diode"
Still I am sorry for wasting your time.

The diode is needed only if the application requires for it, If it don't, it doesn't hurt whether you have it or not.

 

I just googled "450A IGBT without diode"
Still I am sorry for wasting your time.

The diode is needed only if the application requires for it, If it don't, it doesn't hurt whether you have it or not.

yep thank you anyway appreciate you taking time to check this post

 

Did you find what you are looking for ?

 

Did you find what you are looking for ?

The one you mentioned was good but realised I need it to meet higher voltage requirements going to use the following but paralleled up to meet current requirement:
http://www.mouser.co.uk/ProductDeta...DBzk1/Wi9sfqW9DLoncHy%2bBsMivAEk9ejFBM4H46A==

 

What are you making ?