Hi,

I am doing a spice simulation for a switched-capacitor hybrid boost converter. I am simulating it using LTspice and I'm seeing a strange result; when the circuit enters discontinuous conduction mode (DCM), the diodes conduct negative current allowing the inductor current also to go negative. I thought it was not possible for the inductor current to go negative since the inductors couldn't conduct negative current. Any suggestions on what to do or what's going on would be greatly appreciated.

Thanks,
Josh

 

As usual, too little info.
Post your .asc simulation file.

 

These simulators could give you an idea of current flows.
http://schmidt-walter-schaltnetzteile.de/smps_e/aww_smps_e.html