Questions tagged [usb-pd]
The USB-PD tag relates to the Power Delivery extension of the USB specification. USB-PD is capable of supporting up to 100 W of power after negotiation between spec-compliant USB PHYs.
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Help with IP2368 for 20V PD Output – Not Working as Expected
I am using the IP2368 IC to achieve a 20V output for USB Power Delivery, following the guidelines in the datasheet. However, I am experiencing issues, and it’s not functioning as expected.
Here are ...
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Charging and Discharging a Powerbank through the same USB C Port
I am currently designing a PCB that has a vertical USB C plug on it which is used to plug a normal USB C powerbank into it. This is used to supply power to the PCB via USB Power Delivery. Not a ...
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How do devices with more than one USB-C port prevent one port from charging others?
I’m working on a design that is essentially a USB battery pack. It will have a USB port for charging the battery and a USB port for that battery to charge some other device. It is a design requirement ...
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STUSB4500: Can someone please help me understand this diode/capacitor/resistor network in the datasheet?
I am working on a circuit that uses an STUSB4500 to negotiate USB-PD to power the system. I have it working without issue at the moment, but this little bit on the reference schematic from the ...
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DIY USB-C cable not recognised by USB PD power source
I'm trying to replace a wire from my camera's dummy battery from it's PCB -> barrel jack -> USB A cable to just female USB C.
I've got ready made USB-C female to 4 bare conductors cable.
I've ...
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Why do I need a USB-C controller for PD?
I am trying to design the SOURCE part. If I want to be able to supply 5V at 3A to a load using USB-C PD then I assume all I have to do is the following:
This is according to the latest USB-C standard ...
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How does USB-A communicate with a USB-C controller?
I want to design my own 4-port USB-A power supply, as shown below.
However, from what I am reading USB-A does not support PD. So I cannot get different voltages or currents.
I want to be able to ...
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Timing for USB-PD comms on CC line for USB-C?
I am working on a peripheral / powered device that will utilize USB-C power. I am planning on using an ADC to monitor the Rd voltage in order to determine how much current the device can use and ...
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Wireless charging disturbing PCB (USB-PD shut-down)
I'm using an ESP32 and the STUSB4500 for USB-C PD power negotation. I can set the output voltage VCC to either 5V or 12V and depending on my need.
When I hook up a wireless charging device (product ...
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FNB58 USB Tester: Using as universal power supply
I'm currently carrying quite a lot of different power supplies with me. To avoid additional weight and toolbox size, I would like to reduce it to 1 universal power supply solution.
In total, I need ...
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Why are there no 12V/5A USB PD chargers/batteries?
Any 100W USB PD 3.0 system must support 20V/5A charging. Naively I assumed that therefore they should support 5A at any of the lower voltage rails! But for some unclear reason, I cannot find any PD ...
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How to install a USB-C PD host port on my electric longboard (54.6 V)
Installing a USB-C Port on a Longboard for Charging
I'm exploring options to install a USB-C port on my longboard to utilize its enormous ~400 Wh battery for charging my phone/laptop/anything.
Initial ...
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12V through USB Type C without PD
Can I get 12V to my system through USB type C without PD or configuration CC lines or Using CC controller?
If yes how can I do that .
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Low Quiescent Current over USB Type-C [closed]
I'm working on a battery powered project which I'm currently planning on powering over USB Type-C for flexibility. The 5V/3A spec would satisfy my needs for the high end of power draw, however, I want ...
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USB-C module configuration pins in parallel connection
I have received a lot of help from several members of this site. After trying to wire two charging ports on the same device and investigating the diode OR-ing configurations and the power mux ...
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STUSB4500: Contact Ground Issue
I'm working with the STUSB4500 for USB PD Sink. My PD circuit is the same as the Sparkfun Power Delivery USB-C board, and everything works well, except for the fact that the ground is super sensitive ...
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Help identifying "A32F" and "G9" chips used in USB-C cable built in wattmeters
I have been trying to identify the chips that are used in "power meter" USB C cables and adapters. I have purchased and taken apart the following two adapters for this:
Adapter 1 - No name ...
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Need a help with CYPD3177
So basically this IC is used to request specific voltage and current options required at any point. You can find a User Manual here.
For changing the output voltage it says in page 21 that you have to ...
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Replace micro USB tablet connector with USB C
I'm considering upgrading my dad's old tablet, which currently has a micro USB connector. The issue arises from his habit of frequently misplacing the charger, and I'd prefer not to rely on an ...
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DC-DC design with STUSB4761
I am designing a powered USB HUB (UFP) which can provide power to the host through USB PD. This means I need a PD controller which supports DR_Swap and it seems that STUSB4700/STUSB4710 cannot be used ...
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USB Power delivery: what happens if device requests intermediate of power supply's supported powers? [closed]
For example, if you connect Power adapter that supports USB PD 3.0 with PPS, output of 5V, 15V, to a device which requests 9V (and does not support PPS), is it possible that power adapter would give ...
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USB C Power Delivery using below schematic?
I have limited experience with USB C and I want to design a board which needs to charge both a smartphone and another subsystem which draws around 1W. I have read that by just connecting a 5.1k ...
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How to design dual mode USB Type C power bank?
I want to design power bank that has 2 USB Type C ports and uses a large lithium battery inside.
I want to be able to use 100W power delivery when possible. I am absolutely overwhelmed by looking at ...
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USB Type C mobile phone charger Design using MPQ4242-AEC1
I am planning to design a USB type C charger for my bike. This is the first time I am designing a USB charger. I decided to use MPQ4242-AEC1 from MPS.
A 12 V will be coming from my battery. As per my ...
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Configuring a USB-C/PD Controller IC for a Type-A Output
I'm working on a new USB charging product to be installed on airplanes. I understand the power requirements well enough: it has to take 12V-32V input and be able to provide up to 45W of power per ...
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USB PD multiple voltages simultaneously [closed]
I haven’t been to stack overflow in a loooong time, it’s nice to be back!
I was just wondering if USB Power Delivery can provide multiple different voltages simultaneously… say, 5V & 9V, on two ...
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Pulling 100W from USB-C PD through SMD connector
I'm designing a compact addressable LED strip driver circuit. Since USB Type-C chargers with PD should be able to provide up to 100W @ 20V, I want to use a USB cable as my main power source to power ...
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Balancing Circuit for 2S Battery Using MAX77958 and MAX77960
I am currently working on designing a battery-powered device and have decided to use the MAX77958 and MAX77960 for the battery management system (BMS). While reviewing the datasheets and the ...
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Need help connecting 10 LED USB powered lights to one power source [closed]
I need help to connect 10 LED string lights into single plug. I wanted to make sure I have enough power, but not burn out the lights.
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Does USB-C Power Delivery require both CC pins or D+/D- pins?
I'm working on a project to update a device to use a Li-Ion battery rather than non-rechargables. I would like it to be charged via USB-C.
I have previously used IP2721 to handle the power delivery ...
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Monitoring Power/Connection status with INA219 and Arduino
Hey all I am looking to monitor the voltage/plugged in of a USB-C device.
I am using the INA219 to monitor the voltage using the I2C (SDA/SCL) lines to my Arduino (not shown in the schematic).
I just ...
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USB 2.0 FS device over USB C with both power directions
I'm designing a battery-powered device with the following requirements:
rq1: (a) Charge the device's battery over a USB C receptacle, or (b) provide power over the same receptacle. Both directions ...
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USB-C pulldown on the CC lines: Is one resistor enough?
I want to charge a small, battery-powered device via a USB-C socket. It has a single LiPo battery, so 5V is fine. Since I want to make the connection as simple as possible, I do not want to engage in ...
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Protection considerations for powering a microcontroller circuit through USB-C/Micro-USB
I am working on a project which utilizes an Adafruit ESP32 Feather V2 microcontroller and has a bunch of components requiring 5V.
I will have everything on a perfboard and to power it more easily, I ...
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USB-C assistance
I am creating a phased-array controller of sorts and will be using USB-C to power the controller. I have not used USB-C on my own PCBs. I would like a bit of clarification.
I used the generic USB-C ...
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Charging USB-C PD supported laptop from battery bank
Is there a way that I can change my USB-C PD supported laptop with battery bank? I have 3.7V 25000 mAH batteries bank. 5X (3.7V, 5000 mAH) batteries are connected in parallel. What sort of circuit ...
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Is there any logical reasons behind not allowing Vmax to a USB-PD device without communication?
AFAIK, when the power cable is connected, Usb-pd devices start with 5V and then set the power source to another higher voltage that the device can handle via proper USB communication.
For example, our ...
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USB PD: can two outputs of the same power supply be used to generate positive and negative voltage?
I want to power some old machines using an USB PD power supply connected via cables containing a USB PD sink configured for the proper voltage/current.
However, one of those requires three voltages: +...
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STUSB4500 PD controller: how to find reason for last shut-down?
I have a PCB using an ESP32 and the STUSB4500 PD controller. For some reason the system would shut-down once in a while but the problem is difficult to reproduce. I'm currently reading the ESP32 ...
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Is there a way to fool a PD device into using a non-PD Power supply? [closed]
I have a collection of Raspberry Pi's all fitted into a nice custom case, I am using a large 5V 30A power supply to supply all the Pi's and it works great.
I have just received a Pi5 and it has ...
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Do any USB cables support PD at low current only?
We have an application that requires around 7.5W of power delivery over USB. However, we would like the cable to be as thin and as light as possible. So, best case scenario, we would use USB-PD to ...
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USB C - USB A cable connection for power source
I'm trying to power a small microcontroller board using the USB-C of a smartphone, to do so I took a USB C - USB A that has 4 lines (Vcc, GND and 2 data), but I'm not able to get 5V out of it.
Simply ...
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Charge 20 V batteries with USB-PD
A number of power tools now use 20V or so batteries (ex. Milwaukee, Bosch, DeWalt, Parkside, etc). All of them usually come with their own charger (I think only DeWalt has the USB-C port directly on ...
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What is TS component in this PCB?
I am drawing a USB type-C PD charger based on the information given by this manufacturer, but I have doubt related to the components (TS4, TS3, TS7, TS8, TS6, TS5) in the PCB board, what are those ...
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What does this connector symbol mean in a charger schematic?
Could somebody explain what symbol JP1 means? iIt is presented in the schematic of the datasheet of a USB-C PD controller. I think JP1 symbol is kind of two state connector (normally closed and ...
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What does mean NC in an schematic and BOM?
I am reading this datasheet to implement that IC for an USB-C PD module to charge a 2-S battery pack, but I have the doubt in the schematic (page 11). There are some capacitors with value NC which I ...
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USB D± : Simultaneous BC 1.2 and USB2.0 data transmission Possible?
Background
USB pins D± are used for:
USB 2.0 data transmission
Battery charging (BC 1.2)
Question
Can D± be used for USB 2.0 data transmission and BC 1.2, or does BC 1.2 preclude the use of USB 2.0 ...
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USB-C Power Delivery Board (HUSB238), 3.25A Setting not working [closed]
I have developed this USB-C Power Delivery board using HUSB238 IC: https://capuf.in/usb-c-pd-power-delivery-board-65w/
Datasheet of HUSB238
Problem
What I have observed is using the Iset pin. If I ...
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USB-C: Adding Data Transmission to USB PD
Background
Texas Instruments' reference design PMP41013 exhibits bidirectional power transmission (DRP) via USB-C USB PD.
This is principally accomplished through an IC:
...
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USB Type C - only for powering my board
I want to use a USB type C cable only to power my board.
My board requires 5V input and max of 2A load.
I read that by default, the USB Type C cable can give an output of 5V & 3A.
So, I am ...
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