{829} What Is Flyback Converter Topology

in this video {829} what is flyback converter topology in switch mode power supply smps, i explained what is isolated flyback converter and how it works. in Flyback Converter topology (FBT), it is a transformer isolated converter based on the basic concept of buck boost topology. In a flyback converter, a semiconductor switch is connected in series with the transformer primary winding. The transformer is used to store the energy during the ON period of the switch, and also provides isolation between primary and secondary side. in normal operation, when the switch is ON for a period of TON, current flows in primary winding and creates magnetic field, but due to reverse direction of secondary winding, the output diode becomes reverse-biased and the transformer behaves as an inductor. The value of this inductor is equal to the transformer primary magnetizing inductance LM, and the stored magnetizing energy from the input voltage source VIN. Therefore, the current in the primary transformer (magnetizing current IM) rises linearly from its initial value to peak primary current. As the output diode becomes reverse-biased, the load current is supplied from the output capacitor. The output capacitor value should be large enough to supply the load current for the time period TON, with the maximum specified drop in the output voltage. At the end of the TON period, when the switch is turned OFF, the transformer magnetizing current continues to flow in the same direction. The magnetizing current induces negative voltage in the dot end of the transformer winding with respect to non-dot end. The diode D1 becomes forward-biased and clamps the transformer secondary voltage equal to the output voltage. The energy stored in the primary of the flyback transformer transfers to secondary through the flyback action. This stored energy provides energy to the load, and charges the output capacitor. Since the magnetizing current in the transformer cannot change instantaneously at the instant the switch is turned OFF, the primary current transfers to the secondary, and the amplitude of the secondary current will be the product of the primary current and the transformer turns ratio,

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00:00 what is flyback topology, and how flyback converter works
00:53 flyback converter topology block circuit diagram
01:38 flyback circuit explained

[RotacRepair]

Sir, you have gifted me a 100% understanding of the snubber circuit purpose. Thank you!

[kmhovlog]

like mashallah so great flyback converter topology informative video thanks for sharing

[BetterBiomedChannel]

YouTube hasn't suggested your videos to me in a while. Great video.

[trcwm]

Thanks very much for the video! I never realised the coil/transformer has opposite phase. Will you cover other topologies as well?

[sadunnakipoglu]

شكراً جزيلا على هذا المجهود الذي تبذله ربِ يوفقك ويسعدك . تحياتي لك من تركيا.

[billguitarvin]

Thanks so much for taking the time to make this video! It really helped to clear up some misconceptions I had about how a fly back converter works. I love all the videos you have devoted to talking about SMPS, as it has greatly increased my understanding of how they work and how to troubleshoot. All the best to you and take care!

[BORABAYRAM]

ALLAH razı olsun bu paylaşım için. Başarılarınızın devamını dilerim.

[HarlavanisPanagiotis]

Amazing video dear friend, have a blessed Sunday 😊

[ionix]

Again the way how you explained is amazing. Thank you very much.

[MarkPrince]

Thank you very much brother such a great and simple to understand flyback topology please continue few more videos on same topic related to other topologies if possible
Once again thank you very much and best regards from Philippines 🇵🇭

[vijayakumarkumar]

Very good and useful information sir thanks for sharing this knowledge to us

[juanriofrio]

Thank you for the explanation, it was easy to understand the flyback concept. I appreciate it very much.

[zaneenaz]

The transfer of voltage or more simply the transfer of energy by the methods you mentioned is quite interesting.
Multiple ways of looking at the actions of flyback converter and similar switching methods. Again enjoyed your presentation.

[eletronicbrazil]

I want to thank you for your dedication thank you for teaching electronics

[kaizen]

Teşekkürler efendim. Çok güzel bir video olmuş. Hayırlı günler dilerim.

[jamesjohn]

Sir, nice explanation pricis clear to understand!!!

[shekharvartak]

Great knowledge sir. Very very thanks for this informative video

[andreyace]

Thank you for the video, a very good explanation! Peace and good to You!

[gauripartapshanker]

Informative vedeo, detailed vedeo. Thank u so much God bless you

[fahad]

well explained thank you and ma sha allah wish you a good luck