In my device I'm using a "capacitance multiplier" to filter DC-DC output voltage. That's my schematic:
In Multisim simulation I've achieved necessary output parameters, but when I soldered my PCB and measured the output voltage I've got huge mismatch.
According to simulation, when the output load is 10MOhm (approx. multimeter resistance) voltage comes about 4.4 volts. When I measure open output I got 3.7 volts. To estimate loading caracteristics I connected 10 Ohm resistor and got 2.6 volts instead of 3.8 in model. What reasons could cause that mismatch?