Flyback Converter DCM Mode Demonstration

#flyback #DCM #oscilloscope #flybackconverter #powerelectronics
In this video demonstration of flyback converter in discontinuous conduction mode explain using oscilloscope.
#DiscontinousConductionMode
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Thank You !

[@MrSummitville]

2 1/2 minutes into the video and all I see is an empty oscilloscope screen? Nope. I am out !

[@ElectronicsCircuitHubECH]

Sorry...I did not help you. Check some other video surely you will get lots of learning from this channel.

[@pbaemedan]

Professor, thank you for that excellent explanation. If the damped sine time for the leakage inductance ring is a 10 MHz, would we have harmonic content up to about 100 MHz? Also, does allowing the magnetizing current to decay to zero help heating in the inductor and improve it's reliability?

[@ElectronicsCircuitHubECH]

Thanks Dany for your compliment. Indeed it is very question. If you say 100MHz , it is 10th Harmonic of 10MHz. If the leakage inductance is higher and switch node is also higher, we can surely see some impact in radiated emission at 100MHz. But you can see the circut 1st oscillation damped means snubber is designed properly so it will not impact much.
To answer your frist question sure can have impact.
come to 2nd question yes in DCM transformer and Mosfet will dissipate less heat. It has less diode reverse recovery losses.
while cons are due to high ripple current it is used in low power applications.

[@pbaemedan]

Professor, thank you for your information. Conducted and radiated emissions plague a large percentage of designs that I review and approve. Being proficient in SMSPs, allows me to better support my customers. Power supplies are seen as so simple and easy, but most of the EMI failures are directly related to the power supply design. Your examples and experiences provide better insight into resolution of outage issues.

[@ElectronicsCircuitHubECH]

@@pbaemedan I completely agree with you Danny. Power supplies is bone of any design.