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.
115
questions
0
votes
1
answer
69
views
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 ...
- 125
0
votes
0
answers
56
views
STUSB4500 shutting down when I hook-up my wireless charger
I'm using the STUSB4500 to generate 12V, 3A which generally seems to work. I'm configuring the STUSB4500 NVM registers using the SparkFun_STUSB4500.h library and the code looks like so:
...
0
votes
0
answers
72
views
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 ...
- 109
0
votes
1
answer
66
views
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 ...
- 411
8
votes
4
answers
2k
views
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 ...
- 411
0
votes
1
answer
67
views
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 ...
- 411
3
votes
2
answers
616
views
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 ...
- 345
1
vote
1
answer
80
views
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 ...
0
votes
1
answer
125
views
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:
...
- 345
2
votes
1
answer
58
views
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 ...
- 1
1
vote
1
answer
86
views
USB-C: USB PD plus Data Transmission: Possible?
Background
Texas Instruments' reference design PMP41013 exhibits the use of bidirectional power transmission (DRP) via USB PD via USB-C.
This is principally accomplished through the use of two ICs:
<...
- 345
3
votes
2
answers
193
views
USB-C On/Off Switch Design that is PD Compatible (off similar to cold-plugging)
Setup
I am running 4 meters of 12V LED strip lights off of a USB-C power bank using a HUSB238. This results in ~24 watts (2amps@12v) and works fine for my use case. To modulate the intensity, I have a ...
- 141
1
vote
1
answer
57
views
USB-C PD + USB 2.0
I am looking to power homebrew computer designs with USB-C. I have previously used USB-B micro at 5v and the current limits there haven't been a problem but when building analog circuitry (a sound ...
- 111
1
vote
1
answer
87
views
USB Type-C PD Trigger/Dummy/Decoy Boards
I want to make a 10 ports usb-c PD bank regarding to this.
Perhaps a simple question but i have never worked with these:
https://www.amazon.co.uk/Trigger-Module-Pdc004-Voltage-Release/dp/B0BGL4YNGG (...
- 13
0
votes
2
answers
140
views
Can a USB type-C PD port of a laptop provide high voltage?
I have designed a MCU board using CYPD3177 USB-PD controller IC. The goal is to request 9V from a laptop and/or a PC computer's USB Type-C port whilst also establishing data communication. Current ...
- 107
0
votes
2
answers
131
views
Universal laptop charger on USB-C computer
I recently bought a new laptop that came with a USB-C charger, leaving me with a few universal chargers from my old laptop that do not have a USB-C tip, but have the power capacity to supply the 20V/...
- 3
3
votes
1
answer
328
views
USB-PD 3.1 (up to 240W) Dual-Role Port Controller
TLDR: do any dual-role USB-C port controller ICs support USB-PD 3.1 to allow 240W charging?
I am designing a power management module for an ebike which will utilize bidirectional USB-C Power Delivery. ...
- 31
0
votes
1
answer
54
views
Connected my keyboard to Apple 67W USB-C Power Adapter: Voltage Concerns [closed]
I recently had an experience with my keyboard (HHKB Professional Hybrid Type S) that I wanted to get some additional insights on.
Specifically, I accidentally connected my keyboard to a 67W Apple USB-...
- 13
1
vote
0
answers
23
views
Auto power switching between USB and a range of Lipos (1S-3S)
I'm designing a circuit used in a portable device. I want the option of powering the device over USB or from a range of different Lipo batteries (1S-3S).
I want the circuit to auto negotiate between ...
- 11
0
votes
0
answers
28
views
Charge one powerbank from multiple sources
I am in need of more power while traveling and for this purpose I will create a setup with one dynamo hub, one larger solar panel (30W) on the back of the bike and a smaller (10W) solar panel in front....
-1
votes
2
answers
93
views
USB-PD over USB-A
I have a power adapter from Samsung which supports an output of 5.0V 2.0A or 9.0V 1.67A. The adapter has a USB-A output and fast charges my S10 at 9V. Can USB-A be used for USB-PD?
I also have a ...
- 11
1
vote
1
answer
106
views
Is it possible to charge a device at higher power while maintaining USB 2.0 data transfer?
What I've got:
A car with a USB port that only supplies 500 mA.
An android phone with USB-C that supports QC3.0 and PD2.0
...So the phone discharges while driving with Android Auto.
What I want:
I ...
- 116
1
vote
3
answers
76
views
How to prevent power transfer (reverse current) between two DE-9 RS-232 cables? [closed]
we have two USB host devices that communicate with each other and as part of the chain, we are using two Serial to USB cables to connect them, like this:
We are not 100% sure as this happened at a ...
- 113
1
vote
0
answers
54
views
Huawei SCP (SuperCharge Protocol) decoy trigger?
So there are a ton of USB-PD decoy triggers, but they only allow for 5v@3a. However, I'd really love to be able to trigger the SCP [email protected] mode on the 65W battery packs I'm using. I'm not charging ...
- 121
1
vote
1
answer
47
views
USB-C to Low-Profile Connector Cable [closed]
I'm designing a board that involves USB-C power delivery (PD) and I am in need of a very specialized connector. The project design does not allow for mounting a USB-C connector on the board itself due ...
- 11
2
votes
1
answer
214
views
Using USB 4.0 port as USB 3.2 Gen2 x2 (10 Gbps per lane) with USB-C connector without PD-Controller
I'm designing a Motherboard with AMD Ryzen 7040 series APU, and I'm interested to use one of it's USBC ports (which support USB 4.0) only as USB 3.2 Gen2 x2 port.
I know that USB-C connector could be ...
- 1,031
0
votes
0
answers
50
views
Will it work if I put two e-markers on both side of USB-C cable
One of connectors on my USB-C charging cable is broken. It's a 5A cable with a e-marker that has 6 pins, D+/-, CC/VConn, VBUS+/-. I want to replace the broken connector but I'm not sure whether it's ...
- 707
0
votes
0
answers
58
views
LTE SC206E Smart Module acting as USB host and device
We have a requirement such that SC206E should act as a device when USB cable is connected to
J12 for programming ,otherwise it acts as a host. For this purpose we have implemented the circuit as shown ...
- 1,767
0
votes
1
answer
114
views
How do I implement USB-PD?
I have built a circuit that supplies a steady 5 volts and I would like to fast-charge my tablet computer.
If I simply connect 5 volts, the tablet will charge slowly. The tablet supports USB-PD. How do ...
- 12.1k
1
vote
1
answer
76
views
0
votes
0
answers
27
views
50 W Charger USB-PD Integration and Simulation
I'm designing a charger for a smartphone. I designed a circuit that will take 20 V 2.5 A at the output by following the USB-PD protocols required for 50 W through an internet-based simulation program ...
0
votes
2
answers
62
views
How to increase output power of pre-designed USB-PD fast charger?
The circuit in the link is providing 45 W output. How to increase output power to 50 W? Which component should be changed?
0
votes
0
answers
66
views
USB-PD DRP from a single LiFePO4 cell
I am about starting a project with LiFePO4 pouch cells. The idea is to create a powerbank from a single cell. The powerbank must have an input/output USB C connector with 65W minimum power (100W ...
1
vote
2
answers
175
views
How to use a USB powerbank for my electronics project when it starts with 2 or 3 V?
It seems appealing to power my small electronics projects with a 5 V USB power bank, however, it starts with 2 or 3 V, not 5. How come, and how to get a reliable 5 V output?
I tested with 2 digital ...
- 736
3
votes
1
answer
84
views
Looking for an easier way to design a USB-C adapter with indicator LED
My company makes a USB-C/USB-PD 2.0 compliant charging device for use in airplanes. It runs off 28VDC, has a built-in DC-DC converter, and uses the TPS25740B for the USB-PD controller. See the picture ...
- 31
1
vote
1
answer
80
views
USB-C Power Delivery Protocol has "POWER DEVICE ON" signal?
I purchased a year 2022 used HP Laptop with USB-C power supply. The BIOS is pwd protected from previous owner so the standard BIOS "WAKE ON AC POWER" is disabled.
I can power the HP off and ...
- 11
0
votes
1
answer
125
views
USB Type A with "PD Detect" pin. How is this leveraged?
I'm looking into using a USB 3.1 type-A port (ref: 632121300001) and its male counterpart that comes with a "PD DETECT" pin. I'm looking to make a USB-A to USB-C cable.
I might be missing ...
- 125
2
votes
1
answer
523
views
How do devices know how much power draw a usb cable can support?
This has been a little confusing.
I have cables that can support 5V-3A for both USB 2 and 3.
If I put together a type C to type A cable, the specs mandate the Default USB Type-C Current Rp resistor (...
- 125
1
vote
1
answer
177
views
USB device with maximum (900 mA) current draw
I am trying to design a USB device (slave), that should draw the maximum of 900 mA (USB3.0) current from a computer's USB port.
According to the USB specs, current is provided in "unit loads"...
- 11
0
votes
0
answers
69
views
How to determine the maximum charging output of a QI wireless charging coil and circuit board?
I purchased a 20-watt 3-coil QI wireless charging coil and PCB recently (see image with specs below) and I want to power it via the USB-C header and preferably a USB-C to USB-C cable. The USB port on ...
- 1
0
votes
0
answers
79
views
USB-PD DRP controller with Custom UPS board
I am trying to accomplish, combining a USB 3.2 Type-A port with a USB Type-C jack, which supports USB-PD DRP (Dual-Role-Power), like in a laptop, as described in this post. The part of USB-PD with USB ...
0
votes
1
answer
139
views
How much manufacturing and installing inaccuracy can USB C port tolerate? Is 0.5 to 1 mm too much?
How much manufacturing and installing inaccuracy can USB C port tolerate? Is 0.5 to 1 mm too much?
From recent purchases I found lots of USB C ports on brand new consumer products are not manufactured/...
- 1
0
votes
1
answer
113
views
DisplayPort Alt-Mode and USB4.0 port on USB Type-C Connector
I'm building an AMD FP7r2 based platform and I have a USB Type-C port to which I want to connect USB 4.0 signals.
The USB4.0 signals can be also used for DisplayPort (the APU supports this switch), ...
- 1,031
0
votes
1
answer
109
views
I2C transmission gate transistors
I have been looking at a design that uses DMN31D5UDJ-7s for gating I2C signals that are connected to 4.7 kΩ pull-ups to VIO = 1.8 V.
I was wondering if I could replace these transistors with ...
- 1,031
1
vote
0
answers
55
views
Type-C UFP source or sink
I'm very confused by USB power delivery. I've searched everywhere for the answer to my question and it just keeps getting me even more confused.
I have a microcontroller that plugs into my phone. ...
- 11
1
vote
1
answer
75
views
How much power for USB device from USB 3 Type-A host via full featured Type-A to Type-C cable? Also, Enumeration?
I have the following setup with two scenarios I will describe underneath.
The more I think about it and the more I look up the spec I get more confused and frustrated.
A USB 3.X host connected over a ...
- 21
1
vote
1
answer
831
views
Three-wire USB type-C power delivery
My HP Chromebook type-C charger stopped working after a hard pull on the cable. I tore apart the connector and found out the wires just beneath the connector were damaged. I got a new connector to fix ...
- 111
2
votes
1
answer
124
views
More than 5V from USB-A charger?
I recently came across a USB charger (Xiaomi MDY-11-EZ) with the following specs:
5.0V=3A 15.0W
9.0V=3A 27.0W
12.0V=2.25A 27.0W
20.0V =1.35A Max 27.0W
11.0V=3.0A Max 33.0W Max
What confuses me ...
- 31
1
vote
0
answers
86
views
How does a tablet or phone know when to initiate USB-C Power Delivery (PD) power role swap
I'm designing an interface that goes between what is essentially a basic USB-A "Device" (UFP) and a USB-C equipped user device. The connection with the USB-C port could be either a laptop ...
- 11
0
votes
1
answer
65
views
Why are integrated USB PD PSUs with powerbank not more common?
Looking into the circuits and logic behind USB PD (in particular USB-C PD), I wonder why it is not more often done to combine a wall-plug PSU and a power-bank (battery powered PSU) into one. Would ...
- 183