Does drain current go up if doping also goes up?

I'm an EE who's been in software for the last 11 years. My apologies if this is a dumb question.

I need a really high current H bridge. > 10 kA. Voltage is small. Say, less than 1 V. Turn on time has to be << 1 us. On time is a few us, followed by several ms of off time.

There does not seem to be any transistor *currently made* that does this. I found a few legacy products but none currently manufactured.

Here is my question:

"Suppose I make a custom transistor. My transistor has more doping than a typical power transistor. Let's also suppose that I can accept any additional leakage that comes with. By how much, if at all, does max drain current go up?"
 
There are very few engineers on the earth that think at the "doping" level. Some of this is tough in school but none of the students will ever make their transistor.

10kA 1V transistor? The leads would have to be solid copper bars, or straps like car battery cables but much larger.
Here is a 1200A 100V part. It is hard to find a high current MOSFET with voltage ratings below 40V. I can find 600A 40V parts.
1640553669009.png
I do not see many Junction Transistors now days, that will work. I think your requirements are so non standard no one will make the part.

What are you doing with a very high current H birdge? Maybe there is a different way.
 
There are very few engineers on the earth that think at the "doping" level. Some of this is tough in school but none of the students will ever make their transistor.

10kA 1V transistor? The leads would have to be solid copper bars, or straps like car battery cables but much larger.
Here is a 1200A 100V part. It is hard to find a high current MOSFET with voltage ratings below 40V. I can find 600A 40V parts.
e the part.
Please also note that 1V and 10kA means 0.1 mOhm.
The VMO1200-01F has 2 mOhm at 125°C, so you would need 20 in parallel to meet 1V.
Moreover with that current level you need to consider the resistance of all the connections.


I used a 10kA equipment for testing high current diode and thyristor. It was a 2 m high cabinet and you hear the cable moving due to the huge magnetic force on the internal cables.
It seems you need to buy a dedicated custom equipment. What do you need the 10kA for ?
 
I'm an EE who's been in software for the last 11 years. My apologies if this is a dumb question.

I need a really high current H bridge. > 10 kA. Voltage is small. Say, less than 1 V. Turn on time has to be << 1 us. On time is a few us, followed by several ms of off time.

There does not seem to be any transistor *currently made* that does this. I found a few legacy products but none currently manufactured.

Here is my question:

"Suppose I make a custom transistor. My transistor has more doping than a typical power transistor. Let's also suppose that I can accept any additional leakage that comes with. By how much, if at all, does max drain current go up?"
You can use six (10) devices parallel OR total 40 nos of IRF40SC240 to make a full bridge configuration. each device peak pulse current max. is around 1440 Amp, The layout and connections are very crucial, you may need to do all connections with silver plated.
 
Thread starter Similar threads Forum Replies Date
M Batteries & Power Supply Design 1
Top