I am attempting to design the first section of my power supply. In this case, I am going through my calculations for the Rectifier section. I am simulating my circuit with PSpice and while most of my calculations agree with my Spice simulation, my calculated diode current is way off.
Here is the circuit I am designing:
Here is my input voltage (red, across the secondary coil), and my output voltage (green, across the resistor/capacitor)
Everything so far matches my calculations perfectly. Now for the part that has me stumped:
Here is my diode current (blue), load current (green), and capacitor current (red). As you can see, my simulation tells me that the total current = 540mA
Alright. I'm working with: Vr = peak-to-peak ripple voltage = 1V R = load resistance = 1k-ohm C = filter = 270.8uF Vin(peak) = Secondary voltage peak = 24(sqrt2)
My calculations of the peak output current give me 855mA, while the PSpice sim gives me 540mA. I am using the equations from the Sedra/Smith book, provided in the peak rectifier section. Is there something I'm missing here? Thanks!