MOS current

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parth22

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Hi all,
I have this below circuit and I would like to work it as a comparator circuit.
For M1 and q1 it is working as expected. while for M2 it is not. My expectation from IR7 is more than 3A. How could I achieve it?
thanks.
 

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The Rdson max of M2 is 5 ohms, if you ignore its drain and source R
then max I you can get is 1A = 5V / 5 ohms.

You need a MOSFET with a much smaller Rdson.


Regards, Dana.
 

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Hi

I guess you did not read the BSP89 datasheet. Please do so.

Klaus
 

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parth22 said:
My expectation from IR7 is more than 3A. How could I achieve it?
Click to expand...
By using a transistor with suffcient current rating and suitable Rdson. Luckily you are trying this only in a simulation. A real BSP89 would go up in smoke.
 
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T
danadakk said:
The Rdson max of M2 is 5 ohms, if you ignore its drain and source R
then max I you can get is 1A = 5V / 5 ohms.

You need a MOSFET with a much smaller Rdson.


Regards, Dana.
Click to expand...
Thanks, I got it.
 

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