AC-DC converter for low-voltage applications

Thread Starter

Nick Long

Joined May 12, 2020
53
Hello friends. Currently, I am learning the design of an AC-DC converter for low-voltage applications. The topology with the output voltage regulation function from attached file1 is shown below.
1632407461470.png
And the waveforms of the voltage across Vi and the current flowing through L in the steady state are shown below.
1632407270439.png

I conduct the simulation based on this topology without the output voltage regulation function in the LTSpice, and the schematic is shown below. However, I cannot get similar waveforms like those in file1.
1632413293168.png

I have attached the simulation file. Hope someone can help me find the problem. Thanks.
 

Attachments

Danko

Joined Nov 22, 2017
1,143
I conduct the simulation based on this topology without the output voltage regulation function in the LTSpice, and the schematic is shown below. However, I cannot get similar waveforms like those in file1.
They present ideal plot, without inductance / FETs & diodes capacitance ringing.
1632812476774.png1632814542457.png
 

Attachments

Last edited:
Top