2A ClassA using EXICON Lateral

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Exicon lateral MOSFET are good transistors.
The vGS dependent loss is 'only' like 1.5V, compared to 4.5V for IRF MOSFET.
I will use EXICON ECF20N20. Datasheet ECF20N20

First thing I will run a VGS vs. Current test.
My sim setup in attachment.
 

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  • 1_ecf20n20_test.png
    1_ecf20n20_test.png
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Here are the results of my VGS vs. Drain Current.
I use MultiSim DC Sweep.

At 3.75 A vgs is 2.1 Volt
At 2.00 A vgs is 1.5 Volt
At 0.25 A vgs is 0.7 Volt

So for output current 2.0 A +- 1.75 A
we get VGS
1.5V +0.6V and -0.8V
 

Attachments

  • 2_ecf20n20_sweep.png
    2_ecf20n20_sweep.png
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I will need one Inverted preamp.
This will match the inverted power amplifier.

And I will add some voltage gain to this preamp, x4.
This way I can reduce the voltage gain to maybe 50%
in the Lateral power amp.
Resulting in lower distortion overall.

Here is my 3 Transistor preamp with very low distortion for being such a basic circuit.
Also in this amp I use feedback back to BASE.
 

Attachments

  • preamp_x4.png
    preamp_x4.png
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