I would really like to build the power supply described in the Linear Technology Application Note 84, page 146 (see http://cds.linear.com/docs/Application Note/an84f.pdf).
It's a 0-100V 2-8A supply.
The application note has a full schematic, but considering this thing is supposed to be able to do 100V and 8A (though not at the same time), I'm a little wary of just trying to slap it together on a breadboard.
So I built the circuit in LT Spice, thinking I could test it there, and get a better idea of what the actual limits of the circuit are. I've done a quick pc board design for it as well, but considering the voltages and currents involved, some of the traces will clearly need to be larger and widely spaced. Again, this is what I was hoping the simulation could help me figure out.
The problem is that my simulation doesn't seem to quite work, and I can't figure out why. I've never really done anything with switch mode power supplies before, so I feel kind of lost at this point. I've attached the .asc file from LT Spice.
Any ideas on what's wrong with the spice model? Thoughts on design/testing of the pcb? Pointers on where I could look to find out more information?
Thanks!
It's a 0-100V 2-8A supply.
The application note has a full schematic, but considering this thing is supposed to be able to do 100V and 8A (though not at the same time), I'm a little wary of just trying to slap it together on a breadboard.
So I built the circuit in LT Spice, thinking I could test it there, and get a better idea of what the actual limits of the circuit are. I've done a quick pc board design for it as well, but considering the voltages and currents involved, some of the traces will clearly need to be larger and widely spaced. Again, this is what I was hoping the simulation could help me figure out.
The problem is that my simulation doesn't seem to quite work, and I can't figure out why. I've never really done anything with switch mode power supplies before, so I feel kind of lost at this point. I've attached the .asc file from LT Spice.
Any ideas on what's wrong with the spice model? Thoughts on design/testing of the pcb? Pointers on where I could look to find out more information?
Thanks!
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