USB-C Power Delivery Hardware Design - Phil's Lab #104

Your tutorials are incredible and they make electronic so easy.
A slight clarification. If USB-PD IC is configured to get 3A at 15V (45W), is it possible to get a current above 5A at a lower voltage. (Eg: 6A at 7.5V) by sending through DC DC buck converter? Power losses are ignored.

this is serious level explanation lucid with plain clear english and structure totally different from your daily ,,dosto`` videos ps the 4.7uF at the jack is a bit dangerous a bleeder should be there if your last device was 15 v and the next one you hook there is 3.3 things might go bad

why do thin cables cause the voltage drop?

Thank you. Would love to see a video like this but additionally with lipo battery+charging.

Thank you. for the SMD Cap sizes What are your Rules? Whats the size of Bigger Caps?

Hello sir,
I need to know,
The USB PD chip canbe used without microcontroller. And Its also have its own 3.3V integrated voltage regulator so why we can not use this 3.3V supply to the ISNK and VBUS voltage divider resistor.

Can you make battery charge pcb?😅😅

The Tag connect header is interesting but not small at all. Once a connecto is smaller then a USB C connecter then maybe it is small

USB C connectors are the worst garrbage connectors ever.
You quickly find this out if you're blind or visually impaired.
These POS's don't last a week before they are ruined and no longer work.
How they ever got approved is byond me. What kind of s1ckphvck greenlighted this sh1t.

Hey Phil. Did you upload the follow up video regarding i2c communication with the st board?

Hi, can you maybe provide what USB-C power supply you are using? I have 5 chargers at home And I am not able to negotiate 15V@3A with any of them. 20V is working fine.

How can I just create a usb 3.0 usb-c without PD just Data Communication?

This is so amazing 🎉, I really enjoyed working this, but please do you have a video on firmware for stm32 talking to pd controller ?

I have been trying to work out what the VDDD and VCCD lines are for, which wasn't really explained.

According to the datasheet (Page 5), the VDDD line is a 3.3V output that can be used for the VBUS_MIN, VBUS_MAX, ISNK_CRS and ISNK_FIN lines, so I'm guessing these lines don't necessarily need an external 3.3v buck converter like you have.

Funny enough, Page 4 also says an external source of 2.7 V–5.5 V can be used to power the IC on VDDD line if nothing is being supplied to VBUS_IN.

Still trying to work out VCCD, which also seems to be a 1.8v output. The only reference I could find for this line was "Output voltage for core Logic", but just goes to ground anyways?

What a great video. thank you. I am trying to build a 6 port usbc PD hub from household AC current. I was going to use a step down transformer to generate the 12v needed but wondering if this is a better approach. I dont need data, just power

Very timely for me! I have nothing to add except there are only two kinds of slashes. Slash and back-slash. Linux like slashes. Microsoft likes back-slashes.

Why did you end up using a buck converter? If I’m understanding correctly pin 23 already provides 3.3 v

Hello, I enjoyed the video.
Is it possible to do it the other way?
I have a DC barrel type adapter and I want to change the connector part to PD type.

Hey, very interesting Video. Do you perhaps also planning a Video how to design a POE „Client“ , like a POE HAT for a Raspberry, or such like this (or a POE to USB-PD converter,…) 👍

Great video, Phil!
Have you managed to communicate with the PD controller via I2C? I don't see any details, nor the registers description in the datasheet. Have you found any?

Hi, Chapeau for your eloquent and very clear presentation.
Would the Altium .PrjPcb from this design be available. I looked everywhere. I also looked for the CY4533 data @ Infineon, hardly useful. I have Altium, so I can adapt the board to my mechanical requirements. Thanks in advance.

Your channel is a diamond mine of information. Thank you!

Can you help explain why my S23 Ultra which is said has USB3.2 and it fast charges depending on charger so has USB PD capability.

why is it not giving an external nvme enclosure that draws between 5W to 10W the power it needs.

Does the NVME enclosure need to have PD built in? but since it isn't working... why is it working on windows and not complain about the nvme drive drawing high power?

Certainly everybody must be having problems with external nvme enclosures with new nvme drives not getting enough power to it?

Hi Phil, I think you have the answer to a lot of people's problems. What I mean is that new laptops come with USB C charging and more than often the USB C connector gets bent or breaks but the connector cannnot be swapped because the charger then defaults to 5 volts as there is no PD Negoation. As a result, a fair new charger brick is wasted and new one has to be purchased wich contributes to electrical waste etc. The solution to this problem would be try to make a device like in this video that allows you to add a new connector but also does the PD Negotiation with the charger it does supply the voltage the laptop or device negotiates. Can this little board do this? or is there something you can make that allows this? For example, When I cut off my USB C connector on a Dell Charger, I have 3 wires Blue, White and Black but when I added a new connector I cant get it to go above 5volts. Would you be interested in solving this problem and maybe even creating a mini board for sale? You can scan the forums and this is a huge issue across the globe with USB C connectors

I like your videos but , could you not boooooooooom so much. My neighbors really appreciate it. :P

Fantastic content. thank you

Truly one of the best sources for professional electronics engineering on the net. Thank-you.
I'd love to see a similar video but using bidirectional source/sink of 100W, and also 240W. ICs for src/sink seem less available - TI has TPS25750 that I've been looking at for a 1S2P battery operated device.

I would love to be able to download this design and play with it. I don't see any links to it in the description.
Great video truly!!

Does anyone know if there are any solutions out there for e.g. adding a USB-C PD port to an existing DC power supply? I have one made from an ATX computer power supply, and I'd love to be able to access something like 100W via USB-C PD, supplied by the ATX supply. I'm using one of those Chinese boards which take the ATX connector input and break it out to individual positive/GND for each voltage (3.3, 5, 9, 12, -12).

I've been looking for a way to use e.g. the 12V output as a power source for a USB-C port providing PD, but it seems that all the resources online are for the opposite (as in, making simple 'adjustable' power supplies by using a USB-C wall adapter and one of those PD "trigger" boards).

What I want to do is more like if you imagined the demo board from this video, but with a DC barrel jack for the input and a USB-C female connector for the output.
I'm actually surprised the usual Chinese sources don't seem to be supplying anything like this.

I'm sure it could be done with some effort if I butchered an existing PD wall adapter and inserted the DC input in place of the AC circuitry and rectifier, but I'd much prefer a proper solution without any hidden surprises. There's also the fact that the wall adapter components would be configuring voltage/current limits for the PD negotiations, so I wouldn't get 100W from a 65W adapter (plus, there's the risk that the components used aren't rated for 100W).

Can I use a laptop usb C PD port to act as a source? Ex: power a 12v device from a laptop usb c pd port?

This is all fine and dandy, and yes you can get these boards for pennies on the site that shall not be named but I'm more interested in the reverse.. a board that contains a buck converter, an appropriate mcu and PD chip that can set the buck converter to supply the asked voltage. IE.. supply it with 12V from a generic source, then transform and regulate that voltage to what is asked on the PD port end of things. Why? for one, it would be a nice thing to have to convert existing fixed voltage PSU's to something more versatile , also it would be nice to have a cheap device that can supply the non spec 5V5A a PI5 asks for from standard 25watt delivered through a spec compliant PD supply. I've been on digikey but unlike with the IC's described in the video the ones doing the reverse , while i'm sure they exist, are somewhat elusive (to me) i'm probably not using the correct search terms. Any info from frankly anyone would be nice. Cheers.

It would be awesome if you could make a video on wireless charging, particularly the type that are used in electric toothbrushes. There is scant resources out there, and it seems like a handy circuit for a lot of rechargeable applications.

This is great and complete. Thank you.

Can i put power to dc jack and usb c to out put power ? This circuit can use bidirectional?

Did you make that follow up video with I2C comm to the PD controller?
It seems to me that a lot of these PD controllers don't detail the I2C communication for host MCU, hoping this one stands out.

Hello! Nice work as always! I'm planning to use it on my next project. What I cannot understand is the following: the ISNK current is the max current negotiable by the ic? So if I put 5A, I can still use a pd of 5V@5A? Thanks!

can you plz make some review of existing pd controller and its "flaws" based on ts components omparng to wat u used for yyour own. market is overwhelmed with controllers so it might be interesting for your audience. there is another utuber that has overview of just good ones that can output power acc. to specs.

So, I'm late to this and this might be nitpicking, but it appears that the INA180A3 is 100V/V. The A2 devices are 50V/V, unless I'm missing something?

Thanks so much for all the excellent content, I'm learning a lot from it! Love your videos!

I have a doubt.... How is power gonna flow at the beginning if no 5.1k resistor are connected to the CC pins?

Hii, I want to know if this IC can be used in standalone mode without a Microcontroller

I might use this for one of my projects. Thanks for sharing!

So in this case is the usb c port used to input power into the system or does it output power?

Hi Phil! Thank you for the clear and informative video:). I was wondering if you were ever able to flash firmware via the usbc port on this board? Thanks and all the best!

thank you for this very helpful vid

Thanks

HI Sir,

what i can do for the USB CPD host side. I mean i want to make a powersupply which will be capablw of USB CPD. Great Video as always!!

Hi Phil's! What IC do you recommend I use to be able to program and view from uart, only using the type C cable?

In your load switch schematic, it looks like you have left out a zener diode and a resistor between the source and the gate that's present in the datasheet. How do you know to leave those out of your design? A lot of the resistor values are also very different from the datasheet.