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.
175 questions
2 votes
2 answers
48 views
USB3 pass-through on a board - dealing with the USB-PD situation?
We have a board where the customer wants to be able to pass USB through from one USB-C connector (on the back) to another (on the front) to make plugging in the odd peripheral easier - sounds easy ...
- 7,277
0 votes
0 answers
81 views
Debugging MAX77958/MAX77961 System - PD Negotiates to 9V, but Charge Current is 0A with POR Error
I have designed a custom PCB for a 2S battery charging application using the MAX77958 (PD Controller), MAX77961 (Buck-Boost Charger), and MAX17320 (Protector). The MAX77958's I2C Master port is ...
1 vote
1 answer
76 views
USB Charging via Type-C to Type-C on power adapter does not work
I've made a Type-C charger IC for 3S battery. It is charging with Type-A to Type-C charger successful but it's not charging with Type-C to Type-C (via 20W Apple and 25W Samsung Charger) and Type-C ...
- 185
0 votes
0 answers
41 views
USB-C PD Charging: replacing a captive cable (plug) with a socket
There is a PD charger device utilizing a captive cable (with C-Plug). It can deliver 28V5A. My intention is to replace this cable with a C-Socket. I did some research already and know some level of ...
- 1,164
2 votes
1 answer
304 views
USB-C PD Charging: when is exactly the e-marker chip required? [closed]
I have this PD charging cable from Anker (A8895): You can connect it to a PD power brick, and it can actually charge 2 devices with PD: Notebook phone It's offering upto 20V5A (that's my largest PD ...
- 1,164
1 vote
2 answers
93 views
Does USB PD sink requires e-marker somewhere?
I built a device that draws current from a powerbank. The front-end for PD sink is an STUSB4500QTR. It is tuned to negociate 9V/2A. System is connected like this: ...
- 639
0 votes
1 answer
72 views
USB-C 1A charging port chip selection
I would need to crete a charging port that can be disabled by software. To do this I understand I would need: Boost converter PD controller I already find a boost controller supporting up to 4A and ...
- 155
2 votes
1 answer
105 views
USB-C charging speed
I'm making a simple USB-C charger with the idea to charge a phone using a battery. I'm using following schematics: so basically a simple power boost that takes power from the battery and connect to ...
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