Good day -
When trying to simulate a voltage regulator based on the ADA4625, I ran into a problem.
Here is the schematic:
Expected output voltage is 30V. Raw DC input is 34V with a 100mV / 10ms sawtooth ripple applied on it to be able to see if the circuit operates properly. When I swap out the ADA4625 for theAD825 the simulation runs just as expected: nicely flat DC voltage just under target 30V and all voltages and currents check out. But with the ADA4625 it won't run - I see this:
"Pseudo-Transient Analysis: x ms inter=x fill-ins: x (Press ESC to quit)"
LTspice never gets past that (waveform viewer never appears if I wait long enough for the algorithm to complete and shows garbage data if I escape out of the loop).With the AD825 in the schematic the waveform viewer pops up instantly when I run the simulation and shows data that makes sense.
Would anyone be able to help me understand what's going on here?