USB Type-C 要增加 240W 的規格… – Gea-Suan Lin's BLOG
source link: https://blog.gslin.org/archives/2021/05/28/10174/usb-type-c-%e8%a6%81%e5%a2%9e%e5%8a%a0-240w-%e7%9a%84%e8%a6%8f%e6%a0%bc/
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
USB Type-C 要增加 240W 的規格...
在「USB Type-C Specification 2.1 allows up to 240W Extended Power Range (EPR)」這邊看到這個規格：
Extended Power Range cables have additional requirements to assure that these cables can deliver the full defined voltage and current range for USB PD EPR operation. EPR cables shall functionally support a reported 50 V and 5 A o peration. The minimum functional voltage that a cable shall support is 53.65 V. The electrical components potentially in the path of V BUS in an EPR cable, e.g. bypass capacitors, should be minimally rated for 63 V.
All EPR cables shall be Electronically Marked and include EPR-specific information in the eMarker as defined by the USB PD specification. As defined in the USB PD specification, EPR cables are marked as 50 V and 5 A capable. All EPR cables shall be visibly identified with EPR cable identification icons as defined by the USB-IF. This is required so that end users will be able to confirm visually that the cable supports up to as high of PDP = 240W as defined in the USB PD specification.
也是基於 E-Marker 晶片的關係，除了充電頭支援外，線本身也得支援。這解決了目前很多家桌機都自己搞 >100W 的 dock 來支援高瓦數的充電，推出一個標準來涵蓋收斂...
會不會搞到以後連桌機都可以用 USB-C 界面供電啊...
Related
因為一條 USB 線燒了三個設備...
Benson Leung 花了不少時間在測試 USB 線 (「Google 工程師在 Amazon 上留下對 USB-C 線的精彩評價...」與「Google 工程師在 Amazon 上對 Type C USB 線的評論」)，而前陣子他測到一條超棒的 USB 線，把他三個測試設備都燒壞了：(出自這邊) Surjtech's A-to-C cable seriously damaged a Pixel 2 laptop and two USB PD analyzers. 他在 Amazon 上留下的說明可以看到他發現廠商直接把 GND 與 Vbus 的線接錯了 (這個有厲害...)： I directly analyzed the Surjtech cable using a…
February 7, 2016In "Computer"
Raspberry Pi 4 的 Type C 無法使用 Macbook Charger 供電的問題
Raspberry Pi 4 出來後有些災情 (畢竟又加了不少東西近去)，在 Hacker News 上看到的 Type C 介面的充電問題：「Raspberry Pi 4 not working with some chargers (scorpia.co.uk)」，引用的原文可以在「Pi4 not working with some chargers (or why you need two cc resistors)」這邊看到，裡面提到了新的 Type C 供電介面在接某些充電器時不會供電 (包括了 Macbook 的充電器)： The new pi has been released and it has a USB Type-C connector…
July 6, 2019In "Computer"
Google 工程師在 Amazon 上對 Type C USB 線的評論
先前提到「Google 工程師在 Amazon 上留下對 USB-C 線的精彩評價...」，後來這位工程師 Benson Leung 寫了更多的評價出來，在「Amazon.com: Profile for Benson Leung」這邊可以看到。 可以看到大量的線被打了兩顆星，不過還是少數有幾條線測過了： USB Type C cable (USB-C) to USB3.0 Type A: TRUE CURRENT Aluminum shell and Braid Shield cable Reversible for Macbook, Oneplus2,Nexus 5x, Nexus 6P, Huawei and Other Devices 3.3ft (1meter) Nekteck USB 3.1 USB Type C…
November 17, 2015In "Computer"
Author Gea-Suan LinPosted on May 28, 2021Categories Computer, Hardware, MurmuringTags 240w, 50v, 5a, c, power, type-c, usb Leave a Reply Cancel reply
Your email address will not be published. Required fields are marked *
Comment
Name *
Email *
Website
Notify me of follow-up comments by email.
Notify me of new posts by email.
Post navigation
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK