I don't normally comment on videos, but this one deserves more than a thumbs up. Well done sir!
@ChristopheVerdonck3 жыл бұрын
For a Richtek advertorial it's ok i guess...
@johnnyleonidas66393 жыл бұрын
I dont mean to be offtopic but does someone know a way to get back into an Instagram account? I somehow forgot the password. I love any tips you can give me!
@janiesablan97432 жыл бұрын
I don't normally comment on comments, but here's my comment. Well done to you yourself sir!
@janiesablan97432 жыл бұрын
@@johnnyleonidas6639 try commenting on an Instagram post perhaps. I've tried asking an off topic question on a church vigil video about beastiality...let's say it wasn't my best idea...
@itsaustraliadayeveryday72342 жыл бұрын
@@janiesablan9743 Hahahah :)
@Imrooot5 ай бұрын
I never thought that charging could be so complex. Thank you for the great video.
@Maximus-tq8ny3 жыл бұрын
This was absolutely fantastic! I've seen so many "tip-of-the-iceberg" videos on things like USB-C PD but this goes into much more detail. Everything is explained in a way that makes sense. Nonetheless, I'll probably have to watch this one a few more times to catch all of the information that was packed in. You have earned yourself a sub, Sir!
@DSCKottawa3 жыл бұрын
@Jyothi Sithara No problem, the phone will select the correct voltage and current
@Infection3d3 жыл бұрын
Way more than I bargained for. This is extremely good information. Keep it up!
@Boz12111113 жыл бұрын
just what i needed to know. everything about charging. impressive video
@whatmust8146 Жыл бұрын
This is a deep down technical level in deep detail. He certainly knows his subject and this is what i am looking for. All the other one are general consumer grade scratches the surface. 99.99% of consumers do not care or know about something they use every day use and charge their cell phone. That means wrong purchase for the wrong purpose and wasteful. No wonder Walmart shelves have ton of these confusing cables, usb adapters. Knowledge is power!!!!!
@engineerkohat3 жыл бұрын
Wonderful explanation with great equipment use. Awesome.
@niklas65763 жыл бұрын
Never heard of this channel, but saw a middle-aged man with a mustache in front of some oscilloscopes and power supplies and immediately knew, i will get exactly the detailed information I was looking for :D
@two_number_nines3 жыл бұрын
This is the gold standard of the "how does X work".
@zaki4t2 жыл бұрын
If I spend months searching for such quality content for free I’ll simply get to nowhere. Thank you very much for the brilliant & clean effort you have kindly shared with us, respect.
@bharatshetty95603 жыл бұрын
Amazing!!! Many thanks for sharing all the different types of chargers, their specs and the internal design. Being an electronics engineer myself I found it more than enlightening, can't thank you more for painstakingly putting up the graphics in such a lovely way and make it look as simple as it did. Best wishes for your future presentations.
@IncroyablesExperiences3 жыл бұрын
All is said and done, great video!
@MatthewWalker03 жыл бұрын
That RT9759 is insane... "capacitive divider" is not exactly what I'd expect it to be called (no AC signals here). Found the spec sheet, got some clues, and it's more of a double charge-pump that actually uses the battery as a voltage source! Just considering the top half, it first configures the mosfets to use the battery plus the VBUS (which, recall, is externally maintained at twice the battery voltage) to charge the capacitor to VBUS/2==V_battery, then the mosfets are reconfigured to discharge the capacitor into the battery, and repeat. The bottom half is just a duplicate used presumably to ensure smooth operation.
@peterruppert78562 жыл бұрын
Way more info than I bargained for but I'm thankful for it! Awesome video! I had no idea these phone charging systems were so intuitive!
@phonerepairteam42893 жыл бұрын
We service mobile phones professionally and your video has helped us a lot to detect problems and malfunctions associated with charging on modern smartphones. Thank you very much for such a detailed explanation and we look forward to new content.
@nikolaisafronov34523 жыл бұрын
okay. where is the button to donate? It IS a crime to not support such quality videos!
@tj93823 жыл бұрын
This is a brilliant video I never knew there was so much that went into charging a device. Fascinating stuff.
@sensiblewheels3 жыл бұрын
Right? Insane.
@alice_in_wonderland423 жыл бұрын
All thanks to the engineers who designed it
@iggysixx3 жыл бұрын
This is the most in-depth, easy to understand, high quality video on charging that I've ever come across. I love that you are able to explain so comprehensively, while not diving into technical terms (even with the circuit diagrams, and the oscilloscope). That is the sign of true understanding and expertise. Also, thank you for explaining the differences between 'old' charging methods and the new ones, without skipping explenation of the old. I like to repair things, but that could be anything from power tools,.to a variety of smartphones, to old cellular phones. So the gap in my understanding of the differences in charging vs battery chemistry is only becoming more and more apparent as technology develops.. I found an oscilloscope a while back (in the trash - it works fine. From the late 70s I think). I have been meaning to use it to dig into electronics a bit more. Your video really shows the value of it, and I am freshly motivated to start digging in
@iggysixx3 жыл бұрын
On an unrelated note; Are you originally Dutch? (I think I hear the faint remnants of an accent at some points when you speak - your English is impeccable*, though :) * I suspect most Dutch people will not even notice what I am talking about)
@diavalus3 жыл бұрын
@@iggysixx I think he's Dutch as well. I am not Dutch myself and I quickly notice a Dutch accent. :)
@Patrick-nv3xd4 жыл бұрын
Excellent, informative video. Thanks.
@khamsingphengsimsavath97853 жыл бұрын
ภุ
@jasonmiller59563 жыл бұрын
Incredibly well done video. Great organization, instrument use, and pacing. Amazing!
@tabaghdissar3 жыл бұрын
That's the best video I have watched on power delivery. Everything is detailed and even non engineers can understand the concept
@andrewlindh50473 жыл бұрын
Thanks! Great explanation and examples of how the modern USB charging systems works.
@TwskiTV2 ай бұрын
Incredible demonstration. It's not so easy to find good explanations (and even documentation) on this topic
@MalayalamTechOfficial3 жыл бұрын
So informative 😍 Thanks a lot.
@Jobobaboss Жыл бұрын
Wow. This was such a pleasure to watch. Great learning course! I think I might need to watch this one twice to really remember all of the different circuits. Very clear and very understandable. Thank you so much Roland!
@danstiurca79634 күн бұрын
Amazing video. Well explained. Gained a subscriber.
@fiddley3 жыл бұрын
USB Charging is incredibly frustrating, it's practically a matter of trial and error hoping you can get a combination of device, cable and charging port that delivers optimal charging speed. I've lost count of how many times I have gone to charge a device and had it slowly discharge instead because something in the chain isn't correct. Thank you for this video though, it really helps demystify what's going on behind the scenes!
@varunadesilva29303 жыл бұрын
What can I say, absolutely brilliant video with in depth information. Thanks for your massive contribution to KZbin.
@iblesbosuok3 жыл бұрын
Richtek, you produce damn good products. Unfortunately your products unavailable on retailers around me.
@EdwinSteiner6 ай бұрын
This video is excellent. It is the first video I've seen on this confusing topic that actually explained things. Showing the circuits in action is an additional plus.
@twonky69093 жыл бұрын
I am interrested in the different charging standards of Phones. How does VOOC/WarpCharge by Oppo and Oneplus differ from other solitions. What is with the different pins in the connectors? I would like to make my own Type-A to Type-C cable, that also supports VOOC charge.
@Delali3 жыл бұрын
You have no idea how much value i've gotten from this video. Keep up the great work I'm working on a QC charger for my channel so yh, this video has been really helpful.
@pavanah98234 жыл бұрын
It was a superb explanation sir. Thank you.
@arjunb59413 жыл бұрын
Wonderful explanation with ckt concept and port role negotiation, scope signals, this video deserves more than a thumbs up!!
@midkort2 ай бұрын
Thank you for this well done tutorial! I appreciate the level of detail you covered.
@alexwang0073 жыл бұрын
The direct charge topology is so smart. By using the bettery current as feedback and directly controlling the flyback duty cycle, completing the feedback loop (probably a PI controller). Such high effciency.
@vimicito3 жыл бұрын
This was incredibly interesting to watch. On an iPhone I noticed very odd charging behavior that I hadn't seen on Android phones before. This video taught me everything about it that I needed to know and more, thank you!
@esmailalkassir1565 Жыл бұрын
What is it ?
@CCAPACCO3 жыл бұрын
this is gold! thanks. looking to read more from your resources :)
@ІгорАлієв20 күн бұрын
Nice vid! Why didn't anyone use data lines for charging too?
@wirdy13 жыл бұрын
Thank you. Very clearly explained. Very few users know how their phones charge, but for the techies this kind of info is useful to know which chargers / cables combinations work best.
@ruben347 ай бұрын
Finally I can implement usb-c PD on my projects. Great video explanation.
@JSuparman3 жыл бұрын
Thank you Sir for a deep detailed explanation about the complicated FAST CHARGING protocols.
@SAR-k4l4 ай бұрын
This is one of the best videos I have ever watched in this field.
@akankshaupadhayay23523 жыл бұрын
Super informative , nicely explained and great stuff, dis video deserves a thumbs up 👍
@etow8034 Жыл бұрын
So RichTek is the producer of MediaTek's Power Express (PE) charging technology ? Can we use a standard USB-PD 3.0 charger for phones requiring the PE protocol ? Where can we purchase RichTek USB-C chargers ?
@supercurioTube Жыл бұрын
This is exactly the info I was looking for, and the presentation was fantastic! Thanks a lot.
@aquual14623 жыл бұрын
REally indepth video, really good
@quantang63319 ай бұрын
Best video for battery charging ever!
@RuviaPawz3 жыл бұрын
This is the gold standard on KZbin
@sensiblewheels3 жыл бұрын
Omg 23:21 I've been trying to understand how my One Plus 8T charges, with it having 2 batteries and the charger max output being 65W! I'm so happy I found a solution here. Wonderful deep dive!
@orkin.itadmina20723 жыл бұрын
indeed a great knowledge to share with details and complete comprehensive visuals ... kudos!
@soumitratewari4833 жыл бұрын
Sir your engineering knowledge is awesome !!! 👍👍👍👍
@NextGen4.05 күн бұрын
That's what I am looking for, thanks a million for the great video.
@archer9056 Жыл бұрын
Single detailed video on KZbin about phone charging..❤
@AlvinAlsace3 жыл бұрын
This is pure gold. Timeless video, thank you
@iotsolutionslk3 жыл бұрын
I don't normally comment on videos. But this deserves a like comment and subscribe. Wow Wow Wow. This is how you create a how is works video. Simple + Complex + Techie + Theory + Practical. The presentation at it's best. Other youtubers please learn from this guy.
3 жыл бұрын
More info about charging the phone to 80 or 90% on affecting battery life... So much knowledge in this video! Thanks!
@km09993 жыл бұрын
Same same. I normally don't comment much at all. But this video is brilliant! I appreciate that ! Well done!
@HimanshuDewruwanHapuarachchi2 жыл бұрын
This video is an eye-opener. so clean and clear. thank you so much!
@packratswhatif.3990 Жыл бұрын
Thank you, excellent description and well needed !
@birdwatcher8993 жыл бұрын
Great video! I am glad that it appeared in my recomendations! Thank you sir!
@mr.reapir2 жыл бұрын
Your explanation was very well understood Thank you so much for solving many of my confusing issues in this lecture May you have the strength and courage to continue this successful video Thank you again
@oefzdegoeggl Жыл бұрын
Extremely good video about the topic. If I was a circuit designer for power adapters, I'd use the Richtek chips now 😄
@IncroyablesExperiences3 жыл бұрын
A question about direct charge/2 with capacitors: If the capa is charged with a constant voltage the charge efficiency should be only 50% (RC model with R internal PCB path + MOS resistance → even when the steps are slight it's the same as long as there are voltage steps), same when the capa energy is released to the battery at a slightly lower voltage than Vcc/2. The overall charge/discharge efficiency should be 25% but I know it's close to 100% → how it works? Capacitors are charged at constant current from the supply until the selected voltage is reached? (well why not), but how to discharge capacitors' energy at CC to the battery without any regulated buck converter?
@DimaZheludko3 жыл бұрын
Here's my layman speculation. "If the capa is charged with a constant voltage the charge efficiency should be only 50%". I fail to fully comrehend this diagram (15:21), but my understanding is that it works in two modes: Mode1: capasitors are connected to charger in series. Thus, they get each half the voltage. Mode2: capacitors are connected to the battery in parallel. This time they in totall output double current. So, we have two modes that are switched really fast. We are talking about kiloherz, maybe even hundreds. Essentialy we get alternating current (or swithching is the right word?). And what you do to limit alternating inrush current? Add some inductance! A tiny inductor will provide needed reactance that will limit currents. Reactance, when dealt in the right way, does not produce power losses. The main point of heating in this divider are switches themselves. They are vulnerable in the moment of switching: when their resistance is neither infinity (closed), nor zero (open). In this moment you need that inductance the most.
@pizzablender3 жыл бұрын
I suppose when the voltages are very close together, the switching loss will be very small. Let's say you have a 10 volt source and 9 volt sink. You transfer charge from the 10 to 9 volt level. Only 1 volt is "lost in translation" and 9 volts are transferred. Currents are equal. So 90% efficient.
@DimaZheludko3 жыл бұрын
@@pizzablender What you are describing is true, but it is true only for direct, constant currents. And it has nothing to do with capacitors, as they do not pass constant current. They are used to smooth variations in constant voltage. They can not change input constant voltage, they make it even more constant. As for simple constant currents, your conclusions look right.
@pizzablender3 жыл бұрын
@@DimaZheludko Think about capacitors as rechargeable batteries. Charge them in parallel. Then connect in series and discharge. The efficiency can be quite good.
@DimaZheludko3 жыл бұрын
@@pizzablender You are right in that regard. Only it's vice versa. Here, capacitors are charged in series and discharged in parallel. That's what I described in my first answer. The problem is in differences between a battery and a capacitor (especially the size you would find in mobile phone). Battery has some substantial resistance, so if you give it, say 200 mV more than it's voltage, it will charge. Capacitor resistance is bacically zero, so any voltage difference will give you high currents. These currents would produce resistive heating in other parts of circuits, hence the original question by *Incroyables Expériences* That's where the inefficiency comes from: if you connect a source of constant voltage to a capacitor, it will produce a currents that are limited only by the circuit itself. But that makes the circuit a resistive element, thus decreasing efficiency.
@1234456devcdeve3 жыл бұрын
Haven't watched but wanted to comment first after reviewing the intro and reading the comments. This will indeed be the video on battery.
@rfpixel3 жыл бұрын
This is gold! thank you very much for all the information and analysis!
@japhetobandajunior19438 ай бұрын
I say there's a lot to take in it would have been better if the circuits were coupled up with actual phones not just schematics. All in all its the greatest video on mobile charging.
@chideraakpa14242 жыл бұрын
This is so informative and in depth. Thanks for sharing!
@Saschabrix3 жыл бұрын
Thank you for all the explanations, it was super interesting I learned a lot!!!
@meshackkorir8013 жыл бұрын
I didn't know the communication thing btwn charger and phone...so I now know the problem with using two way cable...thanks sir.
@xprise1 Жыл бұрын
Thanks for this great Informational video. My phone is also Note 10 plus as you used in the video experiments. This is a very good phone indeed. ❤
@AshuariaLee2 жыл бұрын
This video is EPIC. Easy to understand! Thanks!
@tannisthadutta92842 жыл бұрын
Thank you for the beautiful explanation and demonstration!
@Swenser2 жыл бұрын
What ic in a phone usually negotiates with the USB charger? Is it the PMC? Or CPU? Or ? I am trying to repair phone that charges with one particular moto qc3 charger but not with any other chargers. It seems CC control problem. Flex and daughter board change have not fixed the problem. I'm currently trying to modify port to trick phone into accepting any charger. Next I'll try connecting together data lines on a normal charger and see....edit: I tied CC pin to Vcc and now all charges accepted. Quick charge won't work but I can live with that. Thanks for your useful video. Helped a lot.
@Mark1Mach23 жыл бұрын
Wonderful. I will rewatch this video to get better understanding. Thank you!
@bvesunsun23243 жыл бұрын
Best video to explain about mobile phone battery charging. I hope that I could watch this video earlier.
@DiegoLopez-rg2xt Жыл бұрын
I congratulate you for the video and thank you for sharing your knowledge with the community. Maybe you can help me clear up a doubt. I am developing a portable audio device that has two USBs (A and C), A is intended for communication (access to flash drives, etc.) and to provide charging to devices, through various fast charging protocols, on the other hand the type C is both an input to charge the audio device itself and an output to charge user devices, both handle fast charging protocols (up to 60 W), in terms of communication, this port is only a slave (it connects only to the pc). My Doubt is: If the fast charge management is controlled by the DP and DM lines, how can both A and C ports be connected to my microcontrollers? I hope you can help me clear up that doubt, since I am in the development of the prototype and that is crucial. From already thank you very much
@CKSChurch3 жыл бұрын
This is great man. Serious quality info here.
@abeerhamad71732 жыл бұрын
Thanks That what i look for So just geastion How can i get 12v from usb charger or power bank manaly? I need your anser
@UjjwalPatil203 жыл бұрын
Can you also explain the protocol used by phones from BBK Electronics.
@zetasyanthis3 жыл бұрын
This is extremely well explained! Thank you! :D
@Lam-s-Workshop3 жыл бұрын
Clear and concise. Thank you very much
@antoniomaglione41013 жыл бұрын
Know the problem... The market is flooded with cables made with a standard USB connector (the type you find on a mouse) at one side, and USB-C at the other side. This cable will not deliver anything above 5 Volt, 2 Amp charging in PD mode. It can deliver Qualcomm QC 2.0 and 3.0 modes, tough. So it is very important to know if the phone uses QC or PD quick charges mode. PD modes require usually a USB-C to USB-C cable. Some brands (like Huawei) use a proprietary charge mode, which basically are like the Qualcomm QC with a modified signalling, so they don't have to pay royalties to anybody. PD mode is not proprietary, it is a standard endorsed by USB Forum, but it is expensive; so we don't see PD in low range phones, and some partial implementation in midrange phones. This may change in the future if all phones will have a 5000+ mAh battery. Personally, I prefer QC over PD because it keeps the current low into the connectors. With a 5 Amp PD, the connectors must be very clean and tight. The problems increase with the square of the current. Thanks for the video...
@lolerie3 жыл бұрын
Nobody really supports 5 amps PD. That is only gigabytes Thunderbolt adapters. That standard USB-A is deprecated.
@aku_saya_dan_diriku4138 Жыл бұрын
I... dont expect this kind of explanation. My brain just overloaded... Anyway.... thanks. It really changes my point of view about mobilephone charger.
@ArifKamaruzaman3 жыл бұрын
Whoaa this is fascinating to watch. I never know how my phone charge so fast. Now I know how complex the charging system is.
@azeqsdwxc6549873213 жыл бұрын
Years ago a 5v 2.4A (=12W) charger was the top of the art, now we see things above 80W this is crazy
@lolerie3 жыл бұрын
Actually even the best of the best like Nexus 9 tablet were using maximum 5 volts 2 amps out of this. And that's only after you will patch the kernel.
@ariefhidayat7312 жыл бұрын
Now 240w
@yabincheng417111 ай бұрын
it goes to really complicated started at 16:30 Mind blowing
@rf44734 жыл бұрын
A clarity in the way of explaining incredible. Do you know if this method of fast charging can damage the battery due to heating? Ty so much.
@volodumurkalunyak46513 жыл бұрын
It depends how smart you'r smartphone manufacturer is. Smartphone should trottle down or disable charging if battery becomes too hot. Setting up those protections is up to manufacturer. Failture to do so may result in multi billion $ lawsuit for battery fires.
@lolerie3 жыл бұрын
The li ion batteries can hit up to 80° C. Modern ones that is.
@MakeElectricityАй бұрын
this video is very valueable & informative.
@whitbyretreat1453 жыл бұрын
The details in this video is mindblowing
@sangeeth_6192 ай бұрын
Great explanation! Thank you. ❤
@impaugjuldivmax Жыл бұрын
I have a Baseus and Ugreen charger, both 100w/20v/5a for my laptop. Is it possible to charge a smartphone with a 100w charger? how long will it live in this 100w mode?
@mikeunivers3 жыл бұрын
best explanation until now
@shiv14992 жыл бұрын
This video was done really well. Thanks :)
@moinshaikh66842 жыл бұрын
God level battery charging and protocol knowledge.
@martinhermsen15184 жыл бұрын
Very good explained, thanks.
@lokesh0000006 Жыл бұрын
Now Charging speeds have reached 240W so please update this video with latest stats & future tech. PPS type charging tech should be the Common standard in all Smartphones.
@HasanProd Жыл бұрын
best video on the topic on the entire platform
@Iam2lazy2register3 жыл бұрын
insanely educational! Thanks!
@yabincheng417111 ай бұрын
09:25 USB-C PD with 20 V and 5 A maximum capacity that delivers 100 Watts energy. How do we have even 240 Watts fast charging nowadays with USB-C cable? Crazy