One year ago I made a video about LLC, but it wasn't soft switching and the waveform were wrong. This video is the correct version, sorry for that! Hope you enjoyed
Thanks for the video. I had a question about how the power flows from one bridge to another bridge when the same gate pulse is applied to both primary and secondary side switches. Could you please explain?
During the Turn On time, in which M1 and M4 are On the current will flow in the positive verse, from left to right in the tank llc. Then the current goes in the secondary side and will follow the same path of the diode (so the first mosfet on the top left will be on). Imagine to replace the passive diodes with the active mosfets. During Ton, M1 and M4 are on on the primary, and the other two mosfet are active on the secondary (Top left and bottom right) like the diode were active passively. I explained this in the video before designign the synch rectifier
@@manoA98A thank you sir. If both side MOSFETs are switched at same time , without any phase shift, whether power will flow? If power flows ,since both are bidirectional switch, power will flow from HV to LV or LV to HV? Kindly clarify my doubt sir.
@@rajeshsethuraman1383 If you ever design this converter in practice, there will actually be a time delay lag between the first bridge and the secondary one. It's not 100% simultaneuous. Plus, when dealing with HV and probably SiC device, there will be additional loss to the discharge of the Cds at each switching cycle which has to be taken in to account. Driver design and auxiliar power supply for the driver are not shown in this video. In real life you will need flyback or push pull to generate 15/20V for the power supply or your drivers, both used for the first and the second bridge
Average model of active clamp forward coverter requires a tons of time and demonstration of maths and paper, in this period i'm quite occupied so I don't know if I will find the time to do that
Did you now that Google sees the .dll files in your Buck converter directory as containing a virus ? I know they do not but Google does not like them. They don't like .exe files either and other extensions Thank you for this !
No, there are 2 DLL files in that one directory that also contains .CPP files which download just fine. When I choose either one or several files for my download in the ZIP file package, it even tells me that those 2 files could not be downloaded. Weird I know but probably not that weird for Google and Google Drive. Gmail also has limitations on what kinds of files are attached to an email. Great stuff you have there though ! I am happy with what you have done with LTspice. I have only started to use Qspice once or twice so far and it is nice you have some of that as well.
@@endremurti ZVS in the primary Is reached through the condition explained at the beginning of the video: Min. Dead time and magnetizing inductance which Is able to discharge the CDS of the mosfets
![[Interview Question + LTSPICE] Int01 Current Control Circuit](/img/n.gif)
Great video! Thank you!
Thank you Leonardo da Vinci
Full bridge LLC! Great video and explain .Thank you so much!
Hi Mano, thanks again for the great presentation!
@@longwang3271 You're welcome
One year ago I made a video about LLC, but it wasn't soft switching and the waveform were wrong.
This video is the correct version, sorry for that!
Hope you enjoyed
Thanks for your reply
Hallo Mano very good video with full insights , Looking forward for Simulation of Matrix converter in LT spice
Very good explain
Hey can you explain how to find maximum power at different switching frequency? And even if the load is not same like varying load?
Thanks for the video. I had a question about how the power flows from one bridge to another bridge when the same gate pulse is applied to both primary and secondary side switches. Could you please explain?
During the Turn On time, in which M1 and M4 are On the current will flow in the positive verse, from left to right in the tank llc. Then the current goes in the secondary side and will follow the same path of the diode (so the first mosfet on the top left will be on). Imagine to replace the passive diodes with the active mosfets. During Ton, M1 and M4 are on on the primary, and the other two mosfet are active on the secondary (Top left and bottom right) like the diode were active passively. I explained this in the video before designign the synch rectifier
@@manoA98A thank you sir.
If both side MOSFETs are switched at same time , without any phase shift, whether power will flow?
If power flows ,since both are bidirectional switch, power will flow from HV to LV or LV to HV?
Kindly clarify my doubt sir.
@@rajeshsethuraman1383 If you ever design this converter in practice, there will actually be a time delay lag between the first bridge and the secondary one. It's not 100% simultaneuous. Plus, when dealing with HV and probably SiC device, there will be additional loss to the discharge of the Cds at each switching cycle which has to be taken in to account. Driver design and auxiliar power supply for the driver are not shown in this video. In real life you will need flyback or push pull to generate 15/20V for the power supply or your drivers, both used for the first and the second bridge
@@manoA98A thank you very much sir
How to see the output voltage Bode plot of LLC?
Hello Mano...great video ....could you please make video on average model/small signal model of active clamp forward converter?
Average model of active clamp forward coverter requires a tons of time and demonstration of maths and paper, in this period i'm quite occupied so I don't know if I will find the time to do that
Did you now that Google sees the .dll files in your Buck converter directory as containing a virus ? I know they do not but Google does not like them. They don't like .exe files either and other extensions
Thank you for this !
Woh, really? They are Just Spice files lol
No, there are 2 DLL files in that one directory that also contains .CPP files which download just fine. When I choose either one or several files for my download in the ZIP file package, it even tells me that those 2 files could not be downloaded. Weird I know but probably not that weird for Google and Google Drive. Gmail also has limitations on what kinds of files are attached to an email.
Great stuff you have there though ! I am happy with what you have done with LTspice. I have only started to use Qspice once or twice so far and it is nice you have some of that as well.
Is this a Full bridge ?
Yes
Very nice, how the signal of the full bridge produce zvs ? Runing phase shifted or how
@@endremurti ZVS in the primary Is reached through the condition explained at the beginning of the video: Min. Dead time and magnetizing inductance which Is able to discharge the CDS of the mosfets