{319} TL494 PWM IC, Datasheet, Function Explained

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  • เผยแพร่เมื่อ 3 ก.พ. 2021
  • TL494 PWM IC, Datasheet & Function Explained. it is pulse width modulation controller ic used to drive push-pull, half bridge and buck regulator topologies.
    TL494 device incorporates all functions required in construction of a pulse-width modulation (PWM) control circuit on a single chip. TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC), a pulse-steering control flip-flop, a 5 V, 5%-precision regulator, and output-control circuits. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies. output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or single ended output operation, which can be selected through the output-control function.
    TL494 PWM IC Datasheet Function / working principle Explained
    tl494 is used in switch mode power supplies / atx power supply / inverter circuit / pulse width modulation motor control circuits / dc to dc converter circuit / pwm module / inverter circuit with feedback / adjustable power supply / class d audio amplifier circuit / half bridge driver / solar inverter circuit /
    i explained tl494 deadtime control / frequency calculation / circuit examples / circuit diagram
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ความคิดเห็น • 191

  • @andredeschamps1587
    @andredeschamps1587 2 ปีที่แล้ว +10

    Mr Haseeb. This is a wonderful and indepth explaination of the TL494. I am sure that there is no college in the land that could match the information and the delivery you give us in these amazing lectures. Thank you so so much for all the time you spend on these videos. Good health and prosperity to you my dear Sir!!!!!!

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว +2

      best regards
      please check video number 449, 450 & 453 for practical application of TL494. another part of this IC is coming soon to program its error amplifiers

  • @MasterIvo
    @MasterIvo 9 หลายเดือนก่อน

    Awesome! Thank you so much for this clear explanation.
    28:35 current limiting
    29:33 master/slave

  • @user-os2tb5hq1d
    @user-os2tb5hq1d 4 หลายเดือนก่อน +1

    I have studied in IISc, one of the best colleges in India. I want to assure that there are professors here who only talks about datasheet reading and if someday they open up any datasheet then in a one hour class, they explain so bad and boring you will hate everything . May God bless you❤, you are 100x better than them.

  • @user-xl6mi1py8b
    @user-xl6mi1py8b ปีที่แล้ว +3

    جزاك الله خير اروع واوضح شرح

  • @henryberesford8704
    @henryberesford8704 3 ปีที่แล้ว +5

    English version greatly appreciated. Many thanks -excellent content.

  • @MAA567000
    @MAA567000 2 ปีที่แล้ว +1

    Thank you very much, it is a very useful explanation.

  • @shekharvartak1306
    @shekharvartak1306 ปีที่แล้ว +1

    Best explanation ever i watched on TL 494 ic . Thanks for sharing

  • @belalsmart7138
    @belalsmart7138 2 ปีที่แล้ว +2

    I believe that you are one of the best u tubers in this field ..

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว +1

      best regards
      please check my latest video number 449. that is practical circuit for TL494

  • @DarsKitchen
    @DarsKitchen 3 ปีที่แล้ว +3

    Great Video all due to your hardwork!!

  • @kaizen1071
    @kaizen1071 8 หลายเดือนก่อน

    Teşekkürler efendim. Hayırlı günler dilerim.

  • @matttodd9424
    @matttodd9424 3 ปีที่แล้ว +2

    Hi excellent video good presentation and comprehensive information thank you

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว

      thanks a lot
      please accept my best regards for your valuable feedback

  • @jinusiret
    @jinusiret 2 ปีที่แล้ว

    Today I am frustrated with a TL494 circuit and I got some ideas to resolve thanks for video, keep going

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว

      yes dear. sometimes TL494 makes a big headache, specially in feedback loops and compensation

  • @kitchentoolss
    @kitchentoolss 3 ปีที่แล้ว +3

    Mashallaha very nice and useful tutorial. 🌻 🌻 🌻.

  • @ahmedmadkour
    @ahmedmadkour 3 ปีที่แล้ว

    ما شاء الله ♥️ ربنا يزيدك يارب العالمين 🙏 احلى 👍 استمر اخى الغالى

  • @Ayeshainthekitchen
    @Ayeshainthekitchen 3 ปีที่แล้ว +1

    Informative and very useful upload. Keep sharing your valuable work brother

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว

      Many many thanks dear sister
      remember me in your prayers

  • @qaiserqureshi100
    @qaiserqureshi100 3 ปีที่แล้ว +1

    Another helpful n useful presentation. Big Like 👍

  • @wesameed824
    @wesameed824 3 ปีที่แล้ว +3

    Very good and interesting lesson
    I hope to make a practical video about this ic
    I mean with oscilloscope and transistors
    Thank you very much

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว

      You are welcome
      sure i will make a complete tutorial to make a best understandable practical tutorial

  • @carolinediyandvlog
    @carolinediyandvlog 3 ปีที่แล้ว +2

    Great video , thank you for sharing and have a good day

  • @tyronearendse1722
    @tyronearendse1722 3 ปีที่แล้ว +2

    Hi friend thanks for another informative video, I just want to know if there are no square waves on pins 8&9 and 10&11, can I assume the ic is faulty? Thanks in advance for your help

  • @vloggerAbhaypathak1
    @vloggerAbhaypathak1 3 ปีที่แล้ว

    Ek aur bahut knowledgeable vdo
    Nice upload
    Sabhi electronics fields ke logo ko dekhna chahiye

  • @rosszzzz
    @rosszzzz 3 ปีที่แล้ว +1

    Really doing great job

  • @DelmaHole
    @DelmaHole 3 ปีที่แล้ว +1

    Another wonderful sharing my friend, Big thumbs dear.👍🏻 Stay safe Fully watched ✅ Stay in touch!

  • @kuchpanktiyajindagiki
    @kuchpanktiyajindagiki 3 ปีที่แล้ว +1

    You are perfect in your work.

  • @khanlalavlogs
    @khanlalavlogs 3 ปีที่แล้ว +2

    Great and superb video like always, a great detailed explanation. Keep it up brother...

  • @vijayakumarkumar9190
    @vijayakumarkumar9190 3 ปีที่แล้ว +1

    Very useful information Sir Thanks

  • @Dr.QaisarAbbas99
    @Dr.QaisarAbbas99 3 ปีที่แล้ว +1

    Another nice job 👍
    Stay blessed

  • @kaupstudio-supportid5956
    @kaupstudio-supportid5956 3 ปีที่แล้ว

    Very informative and interesting, stay safe and blessed

  • @LileArtCraft
    @LileArtCraft 3 ปีที่แล้ว

    Great share

  • @BajisKitchen
    @BajisKitchen 3 ปีที่แล้ว

    Always beautiful sharing hardworking 👍👍

  • @W1RMD
    @W1RMD 3 ปีที่แล้ว +1

    Thank you sir! 🙌 I know have a MUCH better understanding this IC. Could you do a similar video on an L5991? I'm working a power supply from a PS2. It's really only a training aid for me as a new board is only about $15 US.

  • @ziadfawzi
    @ziadfawzi ปีที่แล้ว

    Thanks a lot.

  • @ThePhanFamily
    @ThePhanFamily 3 ปีที่แล้ว +1

    great very informative .. keep sharing

  • @mansirrabiu7412
    @mansirrabiu7412 3 ปีที่แล้ว

    Helpful video 👍

  • @HarlavanisPanagiotis
    @HarlavanisPanagiotis 3 ปีที่แล้ว +1

    Wonderful video dear friend!!!

  • @roshnikasafarwithtahirwasi1019
    @roshnikasafarwithtahirwasi1019 3 ปีที่แล้ว

    excellent work as usual

  • @kuchpanktiyajindagiki
    @kuchpanktiyajindagiki 3 ปีที่แล้ว +1

    Awesome upload as always dear brother. Keep sharing

  • @wechselrichterschaltungen
    @wechselrichterschaltungen 3 ปีที่แล้ว

    Hallo, vielen dank für die super erklärung! ein ähnliches ic ist der SG3525......er hat allerdings nur einen fehlerverstärker. viel erfolg und leiben sie gesund!

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว +1

      ja SG-3525 ist das gleiche ic, das von 100Hz bis 400KHz arbeitet,
      Dieser TL494 arbeitet jedoch von 1 kHz bis 300 kHz (und seine Schaltfrequenz ist halb so hoch, wenn wir Pin 13 mit VRef verbinden).
      Es gibt einen weiteren Unterschied, dass TL494 einen Open-Collector- und Open-Emitter-Ausgang haben
      SG-3525 hat jedoch einen Totempfahlausgang
      (Es wird mit Google Übersetzer übersetzt, möglicherweise ist es ein Fehler bei der Übersetzung in die deutsche Sprache.)
      yes SG-3525 is same ic that works from 100Hz to 400KHz,
      but this TL494 works from 1KHz to 300 KHz (and its switching frequency is half when we connect pin 13 to VRef)
      there is another difference that TL494 have open collector, open emitter output
      but SG-3525 have totem-pole output
      (it is translated using google translator, might be sime error in tranlating to German language)

  • @princesasa124
    @princesasa124 ปีที่แล้ว +1

    Thank you so much

  • @susantaatha6468
    @susantaatha6468 3 ปีที่แล้ว

    Excellent Thanks you sir.

  • @Nabd.machahire1
    @Nabd.machahire1 3 ปีที่แล้ว

    super Laik 134 bon courage

  • @emmylifestyle
    @emmylifestyle 3 ปีที่แล้ว +1

    mashallah so beautiful video big like 👏👏👏🌷🌷🌷🌷🌷

  • @giorgostexnikos6976
    @giorgostexnikos6976 3 ปีที่แล้ว

    excelent analysis thenks

  • @KashmirFood
    @KashmirFood 3 ปีที่แล้ว

    Very great work brother

  • @STV-th2tv
    @STV-th2tv 3 ปีที่แล้ว

    Thanks for sharing good knowledge my brother

  • @manilapunjabikitchen8154
    @manilapunjabikitchen8154 3 ปีที่แล้ว +1

    15lk
    Very nice upload

  • @ilokanavlog5016
    @ilokanavlog5016 3 ปีที่แล้ว +1

    Thanks for sharing keep on vloging God bless new suporters here

  • @temyraverdana6421
    @temyraverdana6421 3 ปีที่แล้ว +1

    Thanks!

  • @TractorDailyVlogs
    @TractorDailyVlogs 3 ปีที่แล้ว

    Welldon great job

  • @fatimaKitchen12
    @fatimaKitchen12 3 ปีที่แล้ว +1

    Walkum aslam mashaAllah excellent work bhai

  • @rahulpatelgujratahmedabad3497
    @rahulpatelgujratahmedabad3497 2 ปีที่แล้ว +1

    Good tiching karte hai 👌👍👍👍👌👌👌

  • @milad-masters961
    @milad-masters961 ปีที่แล้ว +2

    Your information is very comprehensive and complete. Thank you very much for the videos you posted. I had a few questions about how to get in touch with you.

    • @HaseebElectronics
      @HaseebElectronics  ปีที่แล้ว

      You are welcome!
      my gmail id is
      ashraf4ta4
      whatsapp 00962791161084 (Muhammad Ashraf)

  • @zakiausa
    @zakiausa 3 ปีที่แล้ว

    Beautiful video thanks for the sharing you doing great job brother mashallah thanks for the sharing god bless you and take care 🇺🇲🥰👍salam brother

  • @muhammadishtiaq24
    @muhammadishtiaq24 3 ปีที่แล้ว +1

    always excellent

  • @mon-alarby
    @mon-alarby 3 ปีที่แล้ว +1

    بالتوفيق يارب احلى لايك
    عندى جديد ↩

  • @aminkhanone7627
    @aminkhanone7627 2 ปีที่แล้ว

    Thanks a lot sir plz also make a vidio on 4558 ic

  • @user-xl6mi1py8b
    @user-xl6mi1py8b ปีที่แล้ว +1

    اخي الكريم عندي سؤال لو اردنا ان نصنع سخان مغناطيسي يعني طباخ ليزر باستخدام هاذه القطعة ومسفت ٢٠٠v خمسين امبير هل تعمل على ١٢ v بشكل جيد وشكرا

  • @Dc_tech386
    @Dc_tech386 ปีที่แล้ว

    Am trying to understand the load sensor control is it a load monitor sensor to automatically adjust the duty cycle for load to keep the current output of any power supply is that’s your explanation or not

  • @chileyork
    @chileyork 2 ปีที่แล้ว +1

    Suscribed ,amazing channel you have my friend

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว

      Thanks and welcome

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว +1

      for 494 practical
      please check video series video number 449, 450, 452 & 455 to see the practical work of TL494

  • @hamzatvchowkazam338
    @hamzatvchowkazam338 3 ปีที่แล้ว

    Very usefull information

  • @huseinjfry
    @huseinjfry 2 ปีที่แล้ว +2

    Mashaallah brother, This video helps me so much, thanks for the explaination, But can i ask a question?
    How does the the comparator work between 2 input : Error amplifier (1,2 and 15,16) and oscillator? what's the action of the IC to control the duty cycle? how can it drives a driver (ex : TLP250) to increasing or decreasing the duty cycle, so the output of the buck converter maintain a stable set point? I hope you can explain it with the video explaination. Barakallah

  • @gregorybolin4672
    @gregorybolin4672 4 หลายเดือนก่อน

    What is the range of duty cycle ? Can it change voltage how much ? 230 to 110v ? 300 to 50v ? I bought a grid tie inverter for usa and it came with higher European volrage. All it had to go between usa and European was a jumper and a 10k resistor that wasn't soldered fully to the board. They told me where it was and it works fine now.

  • @ARA-HOUSE
    @ARA-HOUSE 3 ปีที่แล้ว +1

    Lk 52 👍👍

  • @TYGAMatt
    @TYGAMatt 2 ปีที่แล้ว

    Sir. Is it possible to explain UC3843, especially when used in flyback boost converter. I have difficulty to understand the loop compensation between comp and FB.

  • @banang3908
    @banang3908 11 หลายเดือนก่อน

    Thanks Mrs Haseeb, I want to know, if we can replace tl494 by sg3525.
    John from Togo.

  • @user-oc1vl6jr8q
    @user-oc1vl6jr8q 3 ปีที่แล้ว +1

    جميل جدا 🌹🔔

  • @shakilahmed591
    @shakilahmed591 3 ปีที่แล้ว +1

    Thanks for your help. I want to request you how to use dummy load & precautions to use on smps

  • @FancyBangles
    @FancyBangles 3 ปีที่แล้ว

    ماشاءاللہ ماشاءاللہ بھائی
    ❤️❤️❤️❤️

  • @AbdulMomenZargar60
    @AbdulMomenZargar60 3 ปีที่แล้ว

    Good Afternoon My Brother

  • @Whosewillwin
    @Whosewillwin 3 ปีที่แล้ว +2

    Sir good job, i subscribed since your have higher understandable demostration, but there some begin who follow your video so can you prepare special videos for them please?

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว +1

      welcome and special thanks
      yes i try to address the questions of my viewers

  • @BhajanShradha
    @BhajanShradha 3 ปีที่แล้ว

    Superb 👍

  • @WithEmanFatima
    @WithEmanFatima 3 ปีที่แล้ว

    English MN zaida samji NAI aa raa par ap ne eis par kob ahaa sa work kia hei MasaAllah

  • @electroniquepassion
    @electroniquepassion 3 ปีที่แล้ว +2

    *Nice*

  • @Dc_tech386
    @Dc_tech386 ปีที่แล้ว +1

    I get a real good question can the Ic automatic adjust its duty cycle when load is connected to like say a inverter to keep the ac volt at a stable output can the Ic do that ????

    • @HaseebElectronics
      @HaseebElectronics  ปีที่แล้ว

      exactly yes. ic must have to adjust duty cycle in 2 conditions
      1. if load changes
      2. if input voltage change
      in both cases, ic will adjust duty cycle to provide regulation

  • @LousyPainter
    @LousyPainter 3 ปีที่แล้ว

    I wish there was an Awsome icon! Thanks.

  • @KienzyMylien02
    @KienzyMylien02 3 หลายเดือนก่อน

    Hello can help? , I have IC transceiver PAN2416AV for receiver, have 2 output (1. Input, Input with Pull-up resistor, Push-pull
    output, PWM output "for forward") (2.Input, Input with Pull-up resistor, Push-pull
    outputoutput, PWM output "for reverse/backward"),
    how to connect to ESC with 3 cables S+- ( esc only have 1 signal input, ic receiver have 2 signal output)

  • @arupmallik3070
    @arupmallik3070 ปีที่แล้ว

    In a SMPS the IC number is erased, how to identify it is TL494 or KA7500 or if other 16 pin IC?

  • @Dc_tech386
    @Dc_tech386 ปีที่แล้ว

    I noticed you avoid the feedback voltage I really would like you to explain the feedback voltage and how it work and where the feedback voltage should come from

  • @vahid.rad32
    @vahid.rad32 ปีที่แล้ว

    Hello, dear brother, I have a 12V 30A power supply whose power transistors are 2sc2625. It was broken, and because I couldn't find that model, I used the large package transistor l13009. Currently, the highest output current of the source is 16A. Can I increase the current to 25 amps by manipulating the tl494 pins? I hope you can guide me

  • @profrobinson
    @profrobinson ปีที่แล้ว

    sir. how we could do to minimize overshoot, undershoot or ringing problems on tl494 amplifierrs?

  • @tomfrance-francecorp
    @tomfrance-francecorp ปีที่แล้ว

    Is it possible to make a spwm output with this ci?

  • @masoudjafarzadeh
    @masoudjafarzadeh 8 หลายเดือนก่อน

    Ihave this problme but idont have any lm 358 or any comrator
    I grounded pin4 but it's not work
    What can i do for this problem
    Thanks

  • @anilkumar-ws6wo
    @anilkumar-ws6wo ปีที่แล้ว

    Sir excellent information please help me sir can I use to 494 instead of tl594

  • @aasaan_islam
    @aasaan_islam 3 ปีที่แล้ว

    Nice physics and lectronics

  • @kitchentoolss
    @kitchentoolss 3 ปีที่แล้ว +2

    Watch for 12 min 🌻🌻🌻

  • @saldinsuljevic6215
    @saldinsuljevic6215 3 ปีที่แล้ว +3

    Esselamu alejkum brother. Can you explain how do we calculate feedback compensation loop and what does it mean? Thanks!

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว +2

      sure. it is basically the gain adjustment of feedback error amplifier. so we select a resistor which will suitable to create a relation between the output voltage and switching of the controller

    • @oisongvietmy5528
      @oisongvietmy5528 3 ปีที่แล้ว +1

      TL494 is a voltage mode control, therfore the open loop gain will observe a -40dB slope which make it difficult to compensate. At least a feedback compensator type 2 or best would be type 3 to keep the loop stable. Great work for tutoring others.

  • @belalsmart7138
    @belalsmart7138 2 ปีที่แล้ว +1

    Thank you sir,
    I have inverter( 12v dc to 220v ac ) using this ic, but the output hertz reaches 100Hz not 50 hertz but volt output is correct (220v), how can I solve this problem???
    Thanks,

    • @HaseebElectronics
      @HaseebElectronics  2 ปีที่แล้ว +1

      please check its RT/CT values. may be these components at pin 5 & 6
      and check 5 volt reference at pin number 14. if more than 5v, replace IC.
      or calculate and adjust RT & CT values for push pull 50 Hz operation

    • @belalsmart7138
      @belalsmart7138 2 ปีที่แล้ว

      @@HaseebElectronics
      Thanks alot , appreciated your response.

  • @zatisungur3434
    @zatisungur3434 3 ปีที่แล้ว

    Hi
    I will ask differently from this topic
    I have a Mega328 lcr-t4 transistor tester and it's defective
    measurements of components are always like mosfet
    do you have any idea about repair
    thank you

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว

      this mega328 is digital, so i never tried or used it so far

    • @zatisungur3434
      @zatisungur3434 3 ปีที่แล้ว

      @@HaseebElectronics 😊

  • @andresrodascassagne8911
    @andresrodascassagne8911 3 ปีที่แล้ว

    Hello , I'm from SothAmerica , can u make more videos about inverters welder machine? I kind of understand that it is a current mode smps

    • @HaseebElectronics
      @HaseebElectronics  3 ปีที่แล้ว +1

      welcome dear
      there is a complete series of inverter welding machine, theory, circuit and practical
      check video number 289, 291, 292, 293 299

  • @iofirm7454
    @iofirm7454 7 หลายเดือนก่อน +1

    🎉

  • @FilipinaWifeAbroad
    @FilipinaWifeAbroad 3 ปีที่แล้ว

    oh my! hahahah! the reason why I majored English in college and became an English because of this crazy numbers ahahah!

  • @user-dh8zy3og5l
    @user-dh8zy3og5l 5 หลายเดือนก่อน

    Aslm brother how can I change an smd transistor with bipolar

  • @eozkantar
    @eozkantar 7 หลายเดือนก่อน

    How can I increase 12 volt 40 amps to 30 volts?

  • @MrBoparaiHardeep
    @MrBoparaiHardeep 4 หลายเดือนก่อน

    Transistor ki base emitter voltage, base collector voltage, collector emitter voltage kya hoti hai ? Sir please is topic ko detail me batayiye & kisi circuit me lage transistor ki base emitter etc voltages ka kese pata kare k working circuit me wo transistor kis voltage pe kam kar rha hai? Kyi baar kya hota hai k SMD pacakage me equavalent nhi milta to problem hoti hai. Mere paas car ki LCD Display hai usme AB2 transistor laga hai jo k khraab ho gya. AB2 transistor (SOT-89) Pacakage me hai jo k 60V, 2W & 5A ka hai. Ab problem yeh hai k SOT-89 Pacakage me 5A ka transistor nhi mil rha agar koi milta to uski base emitter voltage kam hoti AB2 k compare me. Please is topic pe video bnaye... thanks

  • @ahasanhabib8260
    @ahasanhabib8260 29 วันที่ผ่านมา

    Assalamu alaikum, Bhai, ak ic ha jiska number mps2229 , jo 60V250AH E-baike Charger pa dia Huwa ha eski equivalent mil nahira ha, datasheet vi properly nai Mila, ap eski barama TH-cam pa Kuch bataiya to bari meharbani Hoga. Allah Hafaj.

  • @user-pq5tz5pn4g
    @user-pq5tz5pn4g 3 ปีที่แล้ว +1

    🤝🤝👏👏👏💐👍👍

  • @abufazal3043
    @abufazal3043 10 หลายเดือนก่อน

    L6599ad ic testing kaisa Kara

  • @yassine1806
    @yassine1806 2 ปีที่แล้ว

    👍🇩🇿🤝

  • @victorrinz3753
    @victorrinz3753 10 หลายเดือนก่อน

    how remove protection tl494

  • @abufazal3043
    @abufazal3043 10 หลายเดือนก่อน

    Assalam walekum
    L6599 ic tasting kaisa kare