{449} Design TL494 PWM in Push Pull Driver Mode Practical. Push Pull or Half Bridge Driver Circuit
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- in this video i demonstrated how to design #TL494 / TL495 pulse width modulation control ic in switch mode power supply or ATX computer power supply. i explained how to use this ic in push pull mode to drive half bridge or push pull circuit. it can be programmed from 1KHz to 300KHz switching frequency . its frequency depend on RT timing resistance and CT timing capacitor
this is continuation of inverter circuit, tl494 is smps pwm pulse width modulation controller ic to drive push pull driver, it can also drive half bridge
04:00 - Saw thoot wave, not square wave :)
at 06:30 time i said square wave instead of sawtooth wave
i am sorry for that. sometimes in saying it becomes mistake. because while while recording video i have to watch on camera, circuit, soldering iron, paper marker. so it is acceptable to convert sawtooth wave to square wave, LOL
i am thankful for indicating my mistake. please accept my best regards and special thanks
@@HaseebElectronics no big problem dear friend, I understand that you drawing sawthoot wave & saying square wave simultanously, but You're still the best for explain & demo on its particular IC works, I loved it!!
@@TheJavaSync it is my pleasure.
Beautiful MashAllah
May Allah give you more susses Ameen summa Ameen
Aameen. stay blessed
I want to say many thanks that u have given lot of technical tutorial video.
best regards and special thanks
Mashallah excellent
best regards
Amazing share and very informative context. Keep safe and stay connected
Watching here again sending full support thank you for sharing
Thanks for the visit
nice work dear friend ,
Beautiful update , big like for ur work
have a nice day , stay connected .
best regards dear brother
Excellent work mashaAllah
جزاک اللہ خیرا
Bar bar dekh Raha hu.....thanks sir ji
Your channel is the first place where I could actually understand how this IC works.
Congrats!
Awesome, thank you!
Thank you! Best yet description of a tl494 built before our very eyes. I plan to watch this again with soldering iron in hand. Have a great weekend sir.
it is my pleasure
in next part i will try to reveal its hidden features
mr. Haseeb you have no idea how you are helping me improve my skills may be blessed
it is my pleasure
Thank you for making this ic operation more understandable
best regards
the next part will also to discuss the same IC to discuss its more hidden features
@@HaseebElectronics thank you I'm looking forward to watch it
156 thanks seyring 🌹👍
Big big like beiutifull job 👍🌹
Many many thanks dear
Thank you for the valuable technical information!
Very nice 👌
Thanks a lot
Amazingly useful demonstration
Big Like from London 🇬🇧👍
thanks a lot bhai
I like your work god bless you 💎💐
Thank you so much 😀
u r my best teacher
special thanks
Great sharing with great explanation. Keep it up bro
thanks a lot
Beautiful information.
thanks a lot
Useful demonstration. Lk
Really amazing upload brother with excellent demonstration. Keep sharing your wonderful work. Allah bless you
very good and use full information thanks
thanks a lot
Big like - my dear friend ❤️👌
Appreciate your valuable vedios. I'm from srilanka
جزاك الله خيرا
شكرا جزيلا
Always great job as usual
best regards
May Allah bless you, deserves million of likes ...
Thanks,
Excellent thanks for sharing this informative video
it is my pleasure
Great video, very nice.
Thank you very much!
More than excellent sir,,
best regards
Very nice video 👍👍👍👍
Bahut knowledgeable video 🙏🙏🙏 thanku sir. Sir ik video over voltage n over current wale circuit di v bnado using lm 324 ya 358 please sir 🙏🙏🙏
best regards and special thanks
i will share as well
Next one super episode. Thanks
best regards and special thanks
Hi my brother 😍 give you super 👍 good luck and keep safe
best regards
design TL494 PWM in push DRIVER mode practical nive video bro
best regards
This is a great series. Thanks for all of your effort.
My pleasure!
Good information sir 👌👌👌❤❤❤
Very informative.
best regards
Ma Sha Allah beautiful
Jazaak Allah khair
Thanks brother. It was very useful to me.
You are welcome
like #180👍😍
Asalamu’Alaikum brother. Masha’Allah you really work so hard to teach. professional work Masha’Allah . May Allah give you lots and lots more success Ameen 🤲Jazak’Allah Khair Bhai
Many many thanks
Very nice and informative video
So nice of you sir
Great work
Thank you so much 😀
Excellent job bro.
Much appreciated
Very nice&amazing video
Many many thanks
Thank you very much sir
Most welcome
Nice information video ☺️
Big like have a great day 😊
best regards
Best regards to you
MashAllah very nice video sir
Awesome bhai
best regards and special thanks
This is extremely educative
It is my pleasure
Lk 26 good job brother 👏👏👏
Many many thanks
Excellent explanation as usual!!! This is just what I needed. Keep up the great work.
Замечательное очень полезное видео! Огромное спасибо!
Thanks for your excellent video!!
You are welcome!
humanity bless you.
best regards
Wish You Good Luck
best regards Zargar bhai
Excellent video dear friend, greetings!!!
many many thanks
السلام عليكم ورحمة الله مشاء الله لاقوة إلا بالله
Jazaak Allah khair
thanks dear brother
Good video and very useful information 👍
Thank you very much. Have a great day 🙏
Wow!! its nice tutorial. Explained clearly.
Plz sir provide a simple and tested full bridge circuit for 50hz output dc to ac stage inverter that can be made easily at home. Thank you 🙏
السلام عليكم الله يعطيك الصحة ويبارك فيك علي المعلومات القيمة نبارك الله عليك
ASSALAMU ALAIKUM HASEEB BHAI, I AM REPAIRING AIRCONDITION AND REFRIGERATION PCB, KINDLY MAKE VIDEO ON TOP245PN IC WITH DETAIL EXPLANATION, I LEARND AND GAIN LOT OF KNOWLEDGE FROM YOUR VIDEOS, THE WAY YOU ARE MAKING VIDEOS ITS REALLY ALLAH GIFT FOR YOU, ALLAH AAP KE ILM O AMAL MEIN BARKAT DE. JAZAKALLAH AND THANKS A LOT.
Good tiching karte hai 👌👍👍👍👌👌👌👍👍
thanks a lot
Great video brother!!
Please make a video on how to increase amperes of 24v smps...
best regards
sure i will do it soon in upcoming video
Super! Thank you!
best regards and special thanks
Thanks again
best✌✌✌✌✌👍👍👍👍👍👍
Amazing information
👍👍👍👍
best regards
👌👌👌👍
best regards
Great job.Thanks a lot.
Great video
Sir plz make a video on industrial inverter and ultrasonic generator 🙏
This is very important for me 🙏
best regards
and sure i will try my best to explain it
@@HaseebElectronics thank u very much Sir 🙏
Good video brother
Brilliant job 👍👌
Thanks a lot 😊
thanks man.excellent.but i need to find out again about two inverting and non inverting function.please explain that pins more.thanks. ❤️❤️❤️🙏🙏
Salaam Janab Bhai Saab
Allah aap ko sakaamat rakhey aameen
Nice work sir Haseeb.
Thanks for sharing.
Please sir don't forget the video I ask, the AC voltage Stabilizer. Thank you sir.
thank you brother , I want know why the output inverter less then 220 volt ac the problem in internal circuit or output circuit ???
most of the time the problem is in voltage booster section, it fails to maintain high dc voltage to fulfill the requirements of output circuit
and in some cases the output filter is not designed perfectly so that it drops the voltage.
@@HaseebElectronics put when new inverter the output 220 volt ac and now after more year ago the output 150 volt ac what change parameter component to change the output voltage
@@خالدباشميل-ب9و i think in voltage booster section (push pull section) one of the driver is off
or
in output switch one pair or one MOSFET is off or its drive is missing
Mr. Hasseb, please allow me to congratulate you!
You really have teaching talent!
The configuration you explained was the first with the TL494 that worked flawlessly. Chapeau bas!
However, I have a question...
The other variants I tried were designed to work at 50Hz. Practically, I was not able to vary the duty cycle at this frequency, because if it was different from 50%, the circuit would not divide correctly and there would be massive desynchronizations between the two outputs (very different periods).
Well,
I noticed that in the TL494 datasheet, the f0sc is at least 1KHz, but I can't understand how the others managed to make the TL494 work at 50Hz !!
Do you think it's possible?
If so, I would like to ask you to help me understand how!
With many thanks and best wishes,
Tab
best regards
for 50Hz operation, use SG3525 , it is same TL494 jsut its bottom Fosc is 100Hz to 400KHz
i will prepare its practical design, and it will available in 1-2 days.
TL494 have bottom line 1KHz, so it is will become hard to operate it at is below the manufacturer's specifications
@@HaseebElectronics : Thanks for the suggestion! I already studied the SG3525 datasheet, it was on my list, but I was actually very surprised by the experiments that I saw posted by others on TH-cam, with TL494 operated with outputs at f = 50Hz! I wonder, are they just fakes? And if so, for what reason? Just advertising for more hits ?!
it is doable but that is not a good technical approach to drive a component beyond the manufacturer's specs.
many youtubers share suck attractive content to get more views and be much more famous, but they cannot prove it practically as most of the youtubers are just copy pasting, and non-technical approach. in result the viewer cannot get the perfect results.
although in sense of TL494 we need to adjust the ramp signal to give oscillation but it will never be justified that we downgrade a component from 1KHz to 100Hz
@@HaseebElectronics : Thanks for the reply! What about an 74HC90 at the output of TL494? If f0sc=1KHz , then fout1=fout2=500Hz (push-pull config). After that, maybe a :10 divider like 74HC90 will bring out those 50Hz signals, that will be buffered and finally applied to the mosfets. So what do you say ? Thanks a lot!
Hello friend good video however the equation of push pull only applies if the integrated circuit is original from Texas Instruments
Thanks
Great Sir how to control dead time please
dead time control
single ended operation
frequency
time period
and all other calculations in next video
Walkum aslam bhai
thanks a lot dear sister
Sir! I appreciate the great job you're doing. Please I have a question for you. How can I adjust UVLO for tl494?
How is the TL494 used to run 0ne coil Forward Converter with 2 MOSFET that need to turn GATES on SAME time and therefore , 50% on + 50% off for the COIL? (superimposed square waves)-- looking for replacement for complicated circuit of IR2110 IC high and low side driver? Double-Ended transformer-coupled Gate-Drive Circuit
Only works with frequency above 300 hz does not work at 50 or 60 hz.
I built this test circuit for TL494. It is working but duty cycle can not be adjusted. I checked this video 10 times I can not see and you do not say where you connected the pot except only to pin 3? Can you explain where the three terminals of the feedback potentiometer are connected? Thanks!
Sir i congratualate you on the way you have explained, i didnt have any knowledge on how the ic works but now i have gotten some ideas. Can you do the same explanation on the sg3525 ic pliz
best regards
i am trying to prepare a detailed lecture on 3525 soon
whether duty can be operated above 50 percent....
as it is used to drive bipolar magnetic topologies (push pull, half bridge or full bridge)
so duty for each channel must be set below 50% and deadtime must be observed to prevent from cross switching
thanks.but i test three anor four ic and set all you set but no output.just on e1 and e2 have 50hz sinusoidal output.set saw ct to 50 khz . 😭🙏🙏
Hello sir thank you for the great job you are doing I'm a big fan among your followers but one thing I need you to do if is possible, please I want you to make the schematic or draw the circuit for us thank you
very good video useful ,az494ap also same or not
Yes, it is same. i hope this video is special for you
@@HaseebElectronics many thanks sir i will checked
super
best regards and special thanks
please which pin is use to set the duty cycle .i want to use it to design an inverter with a duty cycle of 50%
Pin 1 & 2, for voltage sensing
15 & 16 For current sensing l. are error amplifier pins
These can be configured to set duty cycle
Specially 5o adjust voltage, pin 1 or 2 can be varied
@@HaseebElectronics thank you sir
Helo how to connect 2 pin push pull pwm foward and babckward to 1 signal pwm ( example ESC, only have S+- )
Ass salam walaikum,plz make a video uc3842 3 4 5 ic full details.
sure i will do it
Plz use a bread board for these type of work 😊
okay brother
@@HaseebElectronics i have a question sir
For 50hz AC out put what should be the Tl494 freq ?
A freq bit higher at output and wana adjust it by RT so i wana know the Tl494 output freq to have stable 50hz at 220v side