Would the voltage overshoot be acceptable with 100 milliohms for the CS resistor and 1A maximum load?
Are you asking the original poster or me?
I don't see the need for such a low value current sense resistor in a linear power supply such as this. 1V or so of additional voltage drop, at full load should be acceptable. Going for very low values will increase the error, from offset voltages, especially at lower currents.
I was asking you since you already had it in a simulator. Maybe the voltage overshoot will be acceptable with an output capacitor added and faster compensation.
The overshoot is worse, at lower voltage settings. Adding some anti-slew diodes, along with the associated feedback network helps.
PSU Instr Amp.asc (4.85 kB - downloaded 60 times.)
Here's what it looks like, with the output set to 5V, without R7, R8, D3 & D4.
And with R7, R8, D3 & D4.
Note, I set the current limit to 1A, as that's what the original poster's schematic does.