Please can this IGBT 60N60 work like this

Ian0

Joined Aug 7, 2020
1,615
But this isn't a full bridge, it's a half-bridge with two transistors in parallel.
Provided that the top pair is on when the bottom pair is off, and there is sufficient dead-time to allow the IGBTs to turn off, it will work.
 

Thread Starter

hadewaleadelabu9

Joined Jan 27, 2020
22
NO, you will blow the transistors as they will turn on together and short out the supply.

You need to cross connect the Bases so that opposite transistors conduct, So top Left and Bottom Right bases , top Right and bottom Left.
NO, you will blow the transistors as they will turn on together and short out the supply.

You need to cross connect the Bases so that opposite transistors conduct, So top Left and Bottom Right bases , top Right and bottom Left.
Thanks

But this isn't a full bridge, it's a half-bridge with two transistors in parallel.
Provided that the top pair is on when the bottom pair is off, and there is sufficient dead-time to allow the IGBTs to turn off, it will work.
Thanks
 

ronsimpson

Joined Oct 7, 2019
1,159
Top MOSFETs and bottom MOSFETs must never be on at the same time.
There must be a short time when no MOSFETs are on.
Bottom MOSFETs are driven by a driver sitting on (-).
Top MOSFETs is driven by a signal that is not related to (-) but by (AC)
1604181255090.png
 

Thread Starter

hadewaleadelabu9

Joined Jan 27, 2020
22
Top MOSFETs and bottom MOSFETs must never be on at the same time.
There must be a short time when no MOSFETs are on.
Bottom MOSFETs are driven by a driver sitting on (-).
Top MOSFETs is driven by a signal that is not related to (-) but by (AC)
View attachment 221162
thanks

Top MOSFETs and bottom MOSFETs must never be on at the same time.
There must be a short time when no MOSFETs are on.
Bottom MOSFETs are driven by a driver sitting on (-).
Top MOSFETs is driven by a signal that is not related to (-) but by (AC)
View attachment 221162
 

Attachments

AlbertHall

Joined Jun 4, 2014
11,129
You need to put the Coil/Transformer between the transistors Collectors , that way it will pulse across the supply.
That arrangement (post #1) with the coil connected by a capacitor is a common way of doing things. The coil will see ±half the supply voltage and that may be what the design expects.
 

Thread Starter

hadewaleadelabu9

Joined Jan 27, 2020
22
When the top signal is high the bottom must be low and vice versa.
View attachment 221219
Ok thanks

Thanks
it is already made panel the driver is already there, I just want to change the the burnt transistors and increase the efficiency that's all.

That arrangement (post #1) with the coil connected by a capacitor is a common way of doing things. The coil will see ±half the supply voltage and that may be what the design expects.
thanks
 
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