Questions tagged [power-delivery]
The power-delivery tag has no usage guidance.
49
questions
0
votes
1
answer
43
views
USB Type C PD Minimum Requirement
I have been wanting to veer away from older USB connectors and start using USB Type-C receptacles in future designs but the standard is quite confusing as a hobbyist.
Searching the internet I see that ...
- 353
1
vote
1
answer
102
views
Help identifying chip in Huawei motherboard
Can you help me identify this chip? It looks like a SOT23-5 chip, it seems to be part of the USB-C Power Delivery. The laptop doesn’t power up because this chip seems to be part of the negotiation ...
- 11
2
votes
2
answers
105
views
PDN with ferrite bead
One objective in PCB design is to keep PDN impedance lower than a certain value upto a frequency range, to ensure power integrity. I believe that maintaining power integrity means that PDN is able to ...
- 2,071
0
votes
1
answer
76
views
Power distribution on a board with large number of voltage rails
Complex FPGA boards nowadays can have a large number of voltage rails like 5V, 3.3V, 2.5V, 1.8V, 1.2V and seprate analogue and digital supplies and then separate voltage rails for specific components ...
- 12k
1
vote
0
answers
60
views
Power plane vs polygon pours
This question is being asked from perspective of Altium but applies to other PCB CAD programs as well.
So we can have two type of dedicated copper areas for power on a PCB plane. One is a polygon pour....
- 12k
4
votes
2
answers
147
views
Safety of dual male / single female Y cords
On Amazon there are Y cords with two male plugs and a single, higher current female socket. These are advertised as providing a way to power equipment with higher current demands than a single outlet ...
- 41
-1
votes
2
answers
223
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
0
answers
46
views
Why does Backside Power Distribution work for high speed CPUs?
Several upcoming or future CMOS process nodes are said to offer some kind of backside power delivery for Silicon CMOS transistors, so the precious area in the lower metal layers is freed up for signal ...
- 22.4k
1
vote
1
answer
155
views
1
vote
0
answers
361
views
For USB-C, is it compliant to use the SBU pins for low voltage serial data transfer during 20 V Power Delivery?
I'd like to use a PD controller to allow for 20 V, 60 W+ to enter the sink system, but I'd also like to use the sideband pins (or other pins) to send some 3.3 V TTL serial data to the host side in the ...
- 11
0
votes
0
answers
81
views
USB connection and reconnection issue
I have upgraded a design with a USB2412 to a design with a USB2514Bi chip to have more USB ports available.
During testing we discovered the device works like expected when we connect it to a USB A ...
user220456
0
votes
1
answer
178
views
Is there any benefit of the power plane capacitance to PDN?
PWR and GND plane make a capacitor with the dielectic in between them. The closer the two planes are physically, the higher the electrical coupling and thus the capacitance between them.
Power ...
- 12k
0
votes
1
answer
203
views
How to connect a 24VDC LED light strip and 5V/500mA microcontroller board to power with a single USB-C cable?
I have a 24VDC LED light strip and 5v/500mA microcontroller board that I would like to connect to power with a single USB-C cable. At the moment they connect to their own power sources and the light ...
7
votes
2
answers
972
views
Implementing USB-C PD PHY directly into micro-controller
I want to explore more USB-C PD, in particular Programmable Power Supply (PPS), to supply my projects with power. There are some good projects1 using some standard communication (e.g. SPI or I2C) to ...
- 193
1
vote
1
answer
69
views
I'm having issues with multiple regulator power delivery design
The device I'm designing consists of an STM32F405, a few 3V peripherals, and a few 5V peripherals. The device is is powered off of a 12700 Li-ion battery. The first regulator is a buck/boost that is ...
- 123