All Questions
81
questions
1
vote
3
answers
71
views
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 ...
- 13
1
vote
0
answers
25
views
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 ...
- 31
0
votes
0
answers
32
views
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 ...
- 145
1
vote
1
answer
163
views
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 ...
- 145
0
votes
1
answer
61
views
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 ...
- 3
0
votes
2
answers
86
views
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 ...
- 65
0
votes
0
answers
33
views
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 ...
- 182
0
votes
0
answers
42
views
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 ...
- 31
0
votes
2
answers
79
views
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 ...
7
votes
3
answers
2k
views
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 ...
- 95
1
vote
0
answers
96
views
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 ...
- 797
0
votes
0
answers
46
views
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 ...
1
vote
2
answers
983
views
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 ...
- 135
1
vote
0
answers
49
views
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 ...
- 11
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 ...
