{925} LED driver circuit explained

in this video number {925} LED driver circuit using LIS9412, i explained Non-isolated step-down LED driver controller. Patented CCM working mode, Feed-forward current sampling without burning lamp beads, Over-temperature current foldback function, The most streamlined system structure, No input/output electrolytic operation, Input / Output Voltage "Zero" Distance, Integrated high-voltage start-up and high-voltage power supply functions, Integrated leading edge blanking (LEB), Integrated inductance compensation function
overview
LIS9412 is a control chip dedicated to LED constant current drive. It is suitable for step-down non-isolated applications. By adopting a number of patented control technologies, the system architecture has been simplified to the greatest extent. LIS9412 works in the inductor current continuous mode, no output filter capacitor is needed, and the ripple current of the load can still be kept at a low level; at the same time, compared with the current discontinuous mode, the peak current is smaller and the effective current is smaller, so the device loss is lower. The system can easily reach an efficiency of more than 95%. LIS9412 adopts the patented output constant current technology to ensure that the output current does not change with the inductance and the voltage of the LED light string, and achieves excellent load regulation. LIS9412 integrates high-voltage start-up and high-voltage power supply functions, without the need for start-up resistors or power supply windings. LIS9412 also integrates complete protection functions, including cycle-by-cycle overcurrent protection of input current, open-circuit protection of current detection pin, IC over-temperature regulation function, and short-circuit protection of output terminal, etc.

You are Invited to Join Haseeb Electronics

#led #driver #circuit
{925}, LED driver circuit explained using LIS9412, led bulb driver circuit explained, led driver, led, led driver circuit, how to repair led bulb, led bulb, led driver working principle, led driver ic working, how to repair led, led bulb repair, led bulb circuit repair, buck converter, constant current, led driver work, led driver tutorial, haseeb electronics, how led drivers work, how led driver circuit works, led driver circuit explained, led rc driver circuit, led driver circuit diagram
00:00 LED driver circuit explained
01:02 LIS9412 led driver ic datasheet explained
01:24 CCM led driver circuit diagram
01:53 how LED circuit works

[rapsrandom]

Good job Sir..
You are not just teaching the basic.. You are teaching how it works..And that is why you are the best...👏👏
Keep on uploading Sir..thank you.always watching from Philippines

[WRMD]

I'm impressed at your knowledge and ability to understand so many languages. Thanks for showing!

[mohamedantri]

كالعاده في القمة استاذي الفاضل اشرف شرح وافي وكافي جعله الله في ميزان بكل ثقة

[devendersundi]

very nice explanation, Thank you. May be you can teach us Chinese also, 👍

[Techo_Explorer]

Great video sir. I am very amazed with this video. You only not show how thing works, but also showcase your knowledge of different languages.

[JosepsGSX]

Excellent explanation. The new Chinese bulbs are even simpler, just the control IC and the LEDs direct to 220v (in my region), no capacitor, resistor or coil.

The great feature of all those type of circuits is their hackability. I have been tweaking the current sensing resistor in all my bulbs at home to reduce to half or less the current. Higher resistor, less current, a lot less heat, less stress on LEDs (they never burn now) and you get a very reduced electrical bill with still a lot of lumens.

This works great for ceiling lamps with many bulbs. Where before I had 3x6watt bulbs, now I have 4x2w modified ones. Less than half wattage.

[mjarefi]

The only YouTube channel that has Persian subtitles

[sachinGharat]

It's amazing way you are explaining any circuit.We just feel like we are also flowing like current in the circuit.Thank you very much sir.Have nice time ahead.

[qsnjkgq]

Excellent way of teaching and clearing the basics. Wonderful experience.

[mistawan]

very detailed explanation, especially using data sheets, this is very helpful.

[raol]

Wow you explain very well. I had no idea about that circuit and now i understand. Thank u so much.

[yasyasmarangoz]

Hello Mr. Haseeb.
I have seen your video and even though it is somewhat chaotic and your usage of the english language is not a 10/10, I must say that it was very informative.
Several other comments also mention qualitive aspects of your content.
Thank you! I might subscribe to the channel.

[gauripartapshanker]

Nice explanation. Knowledgeable and informative vedeo. Thank you so much.

[Dennis-ucgm]

You make it so easy to comprehend. I'm surprised there is now that simple of a driver device for LED bulbs. That explains how some I've seen are almost as inexpensive as the old incandescent bulb we use to use. 👍

[vijayakumarkumar]

Very good and useful information sir thanks

[dananjayagunatunga]

Very good explianation.many thanks sir.i am from sri lanka.

[sanwadaya]

I will hope your next Explanation soon. Thank you Sr...

[electronicrepairservice]

Great timing - I just took my spiral LED bulb apart yesterday to see if I could figure out why it failed. Amazingly I have 2 of the same bulbs that failed after 2 years and the boards inside are somewhat different from each other, different LED drivers too ... go figure. I love these bulbs (ANMIEN 120w) but now they are hard to find. 🙁 This is a great explanation of how the circuitry of an LED light bulb works. No more basic lightbulbs 😅 Very interesting lesson nonetheless, thank you!! 🤓 Just curious if there is a way to test the LED driver IC?

[andreyace]

Thank You very much!!! Peace and good to You!!!

[azam]

Sir, you have explained very very deep theory but i want to know its Purpose and its faults and effects of faulty Driver IC.