All Questions
30
questions
0
votes
0
answers
51
views
Options after breaking USB-C jack off of PCB
Hello!
Snapped the USB-C jack off of my Logitech MX Keys.
I have a background in computer engineering and some experience doing board-level repairs. I do have an SMD hotplate, multiple soldering ...
- 1
0
votes
1
answer
38
views
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 ...
1
vote
1
answer
123
views
Asymmetric charging with (symmetric) USB C
I'm wondering if asymmetric charging behavior (does it differently depending on which orientation is used on the cable connector) is a feasible failure mode with USB C, which is supposed to be an ...
- 113
1
vote
0
answers
170
views
12VDC LED blinks when powered by a PD charger using a USB-C decoy module
I am trying to build a low-voltage LED lamp powered by a USB-C PD power adapter instead of a traditional DC power supply with a barrel connector. Several reasons for this:
USB-C cable is detachable ...
0
votes
1
answer
115
views
Sink 15 W from USB power supply
my question is simple but USB standard and how it works, let me going crazy.
I need to sink up to 3 A (5 V) from a USB type C connected to a 15 W (5V @3A) wall power supply.
My board should have only ...
- 91
2
votes
1
answer
178
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
0
votes
0
answers
193
views
Battery mangement IC with USB C 2.0
I am currently designing a one-cell battery USB C 2.0 device. I saw many battery chargers from Texas Instruments such as bq24295, bq25628, bq25898, bq25890/2, bq25601, etc.
I would like to use and ...
1
vote
1
answer
201
views
Automatic Power Switching (USB-C and AA batteries )
I am trying to use a P-Channel MOSFET to automatically switch from battery power (4xAA) to USB-C power (5V) when the USB-C cable is connected. I am using a resistor network (R1 and R2) to create a ...
0
votes
0
answers
86
views
Load share across 3 USB-C PD connections
I have 3, 20V 100W USB-C PD power supplies, which are basically a USB-C power bank connected to 3 of these USB-C triggers. I would like to spread the load of my project out among all 3 power supplies, ...
- 155
1
vote
1
answer
125
views
Splitting a USB-C for aux power
I'm building a mechanical keyboard and I need more current from my PC than I can get from one usb port. Can buy/make a usb splitter that I can plug into two A ports on my PC and plug into my USB-C MCU?...
- 13
1
vote
3
answers
1k
views
USB-C power microcontroller ESP-32-S2 and NeoPixels
I am working on making a custom PCB that powers an ESP32-S2, as well as roughly 40 NeoPixels using a USB-c connector.
I made my first set of boards (ever) and was thrilled the computer recognized it ...
- 143
0
votes
0
answers
132
views
Can I syphon power from a USB-C smartphone and still charge the phone?
I'm designing a device (simple 5V LED) that will be powered by a smartphone (via the USB C socket). I am struggling with allowing the phone to be charged at the same time via the same connection.
Is ...
- 101
3
votes
1
answer
1k
views
Why USB-C has 4 Vbus? And how does it affect my design?
I'm making my first pcb design and decided to use UCB-C to power it. I don't understand why such connector has 4 Vbus. Is it fine for me to just use one? Are there benefits to distributing power over ...
- 75
2
votes
1
answer
62
views
USB-C Charging Device With Agnostic Power Supply
I'm designing a PCB that will utilize USB-C to supply power (5V/3A) to my board and have a few questions:
What are the requirements to ensure a 5V/3A (15 W) supply to my device if I know nothing ...
- 21
1
vote
1
answer
2k
views
Why doesn't my car hardwire USB C loom work?
I decided to tap off the negative and positive wires for a 12V cigarette lighter and wire in a USB C charger to discretely provide permanent power to a Bluetooth receiver in my car. I have a 4A inline ...
- 111