Higher power USB-C will deliver 240W

Today’s USB-C charging can support up to 100 watts. But that’s not enough for all gaming laptops and other power-hungry devices. There seems to be real need for more USB power because some manufacturers have sold off-spec 130W USB-C adapters. The new standard capacity of 240 watts is enough to run larger monitors, printers, gaming laptops and other devices.

The USB Implementers Forum (USB-IF) has just announced that it’s more than doubling the amount of power you can send over a USB-C cable from 100W to 240 watts.
https://www.theverge.com/circuitbreaker/2021/5/25/22453936/usb-c-power-delivery-extended-power-range-epr

The USB-C Release 2.1 spec more than doubles the power output of the all-in-one cable.

The USB Implementers Forum (USB-IF) has just announced that it’s more than doubling the amount of power you can send over a USB-C cable to 240 watts. This is something that the USB-IF is calling “Extended Power Range” or EPR for short.

This means you’ll eventually be able to plug in the same kind of multipurpose USB-C cable you currently use on lightweight laptops, tablets, and phones to charge all but the beefiest gaming laptops (which will still need an ugly barrel jack and a proprietary power brick to charge).

You’ll need new USB-C chargers and cables to take advantage of the new spec, of course. A cable will need to support up to 5A and 50V to be compliant.

This gives the hint that the extra power capability is made possible by increasing the supplt voltage. 5A*48V=240W. In addition to higher voltage I expect some extension to the USB power delivery device handshaking specifications to reliably tell when this higher voltage is appropriate, because sending 48V to an older device expecting 20V 5A maximum would most propably fry it.

Stephen Shankland / CNET:
USB standards body unveils its USB-C 2.1 revision, which supports power up to 240W, up from 100W currently, aimed at devices like 4K displays and gaming laptops — An upgrade to the USB-C standard will accommodate levels of up to 240 watts, an improvement that could let you plug power-hungry devices …
https://www.cnet.com/news/usb-c-upgrade-delivers-a-whopping-240w-for-gaming-laptops-and-other-power-hungry-devices/

An upgrade to the USB-C standard will accommodate levels of up to 240 watts, an improvement that could let you plug power-hungry devices like gaming laptops, 4K monitors and printers into the universal port.

The USB Implementers Forum (USB-IF), the industry group that develops the technology, revealed the new power levels in the version 2.1 update to its USB Type-C specification on Tuesday. The new 240-watt option is called Extended Power Range, or EPR.

Cables supporting 240 watts will have additional requirements to accommodate the new levels. And USB-IF will require the cables to bear specific icons “so that end users will be able to confirm visually that the cable supports up to…240W,” USB-IF said in the specification document.

USB Type-C® Cable and Connector Specification Revision 2.1
https://usb.org/document-library/usb-type-cr-cable-and-connector-specification-revision-21

The USB-C specification isn’t the only one covering how USB ports and cables work. Today’s mainstream USB 3.2 and brand-new USB 4 govern how data is sent over cables. But USB 4 is rare, just arriving now in newer laptops.

76 Comments

  1. Tomi Engdahl says:

    Support up to 240W | Teardown of Newest PD3.1 Dual USB-C Cable
    https://www.youtube.com/watch?v=FZFtiimc7Lw

    0:00 Intro
    0:43 Testing
    1:25 Teardown – Cable
    3:06 Teardown – USB-C Connector
    4:22 Summary

    Reply
  2. Tomi Engdahl says:

    USB Type-C 2.1 Cables Start to Become Available for 240W Power Delivery
    By Mark Tyson
    published May 02, 2022
    They can deliver up to 48 volts and 5 amps.
    https://www.tomshardware.com/news/usb-type-c-21-cables-start-to-become-available-for-240w-power-delivery

    Reply
  3. Tomi Engdahl says:

    Plugable’s new USB-C meter can measure power delivery up to 240W
    By
    João Carrasqueira
    Published Aug 02, 2022
    https://www.xda-developers.com/plugable-usb-c-meter-240w-charging/

    Plugable has announced a new version of its USB-C voltage and amperage meter, now with support for power delivery up to 240W.

    Reply
  4. Tomi Engdahl says:

    USB Type-C® and Extended Power Range Capability
    https://www.ul.com/resources/usb-type-c-and-extended-power-range-capability

    Join this webinar to discover how to apply UL 62368-1 and UL 9990 to meet system safety requirements and obtain UL certifications for the source, sink, and cable that go over 100W up to 240W of power.

    Reply
  5. Tomi Engdahl says:

    EPC9171 KIT – 90–265 VRMS Universal AC Input to 15 V–48 VDC , 5 A Output USB PD3.1 Reference Design Board
    https://epc-co.com/epc/products/demo-boards/epc9171

    The EPC9171 demonstration board is an universal AC input voltage range and frequency isolated power supply, designed for USB PD3.1 systems and supports operation in Extended Power Range (EPR) Mode. It is capable of supplying 240 W maximum output power at 48 V output voltage and 5A load current. A power density of about 1.1 W/cm3 is achieved by employing, GaN power switches operated at high switching frequencies in both the primary and secondary circuits.

    Reply
  6. Tomi Engdahl says:

    USB Type-C 2.1 Cables Start to Become Available for 240W Power Delivery
    By Mark Tyson published May 02, 2022
    They can deliver up to 48 volts and 5 amps.
    https://www.tomshardware.com/news/usb-type-c-21-cables-start-to-become-available-for-240w-power-delivery

    Reply
  7. Tomi Engdahl says:

    Versatile DIY USB Power Supply
    This portable 100W + 65W charging unit features two USB-C Power Delivery ports, four USB-A ports, and a 24VDC output jack.
    https://www.hackster.io/news/versatile-diy-usb-power-supply-e9412acf257b

    Reply
  8. Tomi Engdahl says:

    Uusi Redmi lähestyy jo kännykkälatauksen maksimitehoja
    https://etn.fi/index.php/13-news/14329-uusi-redmi-laehestyy-jo-kaennykkaelatauksen-maksimitehoja

    Xiaomin uusi Redmi Note 12 Explorer on saanut mainetta markkinoiden tähän asti nopeimmalla lataustekniikallaan. 210 watin latausteho on uusi ennätyslukema Android-luureissa. Tällä teholla puhelimen 4300 milliampeeritunnin akku täyttyy nollasta sataan prosenttiin vain yhdeksässä minuutissa.

    Laitteen laturissa käytetään Navitas Semiconductorin GaNFast-piirejä. Galliumnitridi-tehopiirit kytkevät 20 kertaa perinteisiä piisiruja nopeammin, joten tehonsyöttö on huippunopeaa. 210 watin laturi pystyy lataamaan puhelimen akun 66 prosentin kapasiteettiin vain 5 minuutissa.

    Teholukemista huolimatta Redmi Note 12 Explorerin laturi on kooltaan vain 67,3 x 64,3 x 30 millimetriä. Laturin tehotiheys on 1,25 wattia kuutiosenttiä kohti.

    Uuden Redmi-puhelimien latauspiirien toimittaja on kalifornialainen Navitas Semiconductor, jonka piireillä on viimeiden vuoden aikana rikottu lataustehoennätyksiä tiheään, kun latureissa on rikottu ensin 100 watin raja ja sitten pikavauhtia 200 watin raja.

    Tällä hetkellä rajan asettaa USB-väylän tehonsiirtostandardin eli PD 3.1-version 240 watin maksimiteho. Sellaisia latureita markkinoille on luvassa jo ensi vuonna.

    GaN-piireissä tehon kasvattamisen rajan sanelee itse asiassa fysiikka, tarkemmin transistorin hila. Jos jännite on liian matala, kannattaa laturi edelleen tehdä piipohjaisilla komponenteilla. Jos jännite on liian korkea, hila hajoaa. Raja on noin 7 volttia. Sen yli GaN-piireillä ei voida mennä.

    Laturivalmistajan pitää siksi löytää ihanteellinen latausjännite, jossa lataus on mahdollisimman nopeaa mahdollisimman kompaktissa koossa. Navitasin GaNSense-tekniikassa tuleva jännite reguloidaan 6,2 volttiin. Ratkaisulla voidaan syöttää 300 wattia tehoa ilman jäähdytystä.

    300 watin teho on käytännössä mahdollista jo ensi vuonna.

    Reply
  9. Tomi Engdahl says:

    Sata wattia langattomasti
    https://etn.fi/index.php/13-news/14330-sata-wattia-langattomasti

    Siinä missä pienten kannettavien laitteiden langallinen lataus kiihdyttää jo yli 200 watin tehoissa, kasvaa teho myös langattomassa Qi-latauksessa. STMicroelectronics on julkistanut langattoman tehovastaanottimen, jonka teholuokitus on 100 wattia. Kyse on korkeimmasta Qi-standardin mukaisesta lataustehosta.

    Reply
  10. Tomi Engdahl says:

    Throwback: USB Hotplate Used 30 Whole Ports
    https://hackaday.com/2022/12/01/throwback-usb-hotplate-used-30-whole-ports/

    Once upon a time, USB was still hip, cool, and easy to understand. You could get up to 500 mA out of a port, which wasn’t much, but some companies produced USB cup warmers anyway which were a bit of a joke. However, one enterprising hacker took things further back in 2004, whipping up a potent USB hot plate powered by a cavalcade of ports.

    The cup warmer was stripped of its original hardware, and fitted with six 2-ohm resistors instead. At 5 volts, each would draw 2.5 amps and the total power draw would be on the order of 75 watts. Each resistor would thus need five USB ports to power it to stay under the 500 mA limit, for a total of 30 USB ports in total. Six PCI-to-USB cards were installed in a motherboard for this purpose, providing the requisite ports. A 500 watt power supply meant the computer had plenty of juice to run the hot plate.

    Reply
  11. Tomi Engdahl says:

    USB-C: Introduction For Hackers
    https://hackaday.com/2022/12/06/usb-c-introduction-for-hackers/

    We’ve now had at least five years of USB-C ports in our devices. It’s a standard that many manufacturers and hackers can get behind. Initially, there was plenty of confusion about what we’d actually encounter out there, and manufacturer-induced aberrations have put some people off. However, USB-C is here to stay, and I’d like to show you how USB-C actually gets used out there, what you can expect out of it as a power user, and what you can get out of it as a hobbyist.

    Reply
  12. Tomi Engdahl says:

    Jopa 240 watin USB-lataus helposti sulautettuun
    https://etn.fi/index.php/13-news/14350-jopa-240-watin-usb-lataus-helposti-sulautettuun

    Yhä useampi sulautettu laite saa virtansa C-tyypin USB-väyän kautta. EU:n tuore laturidirektiivi vahvistaa tätä kehitystä omalta osaltaan. STMicroelectronics yksinkertaistaa näiden eri laitteiden suunnittelua uusimmalla X-CUBE-TCPP-ohjelmistopaketillaan.

    USB Power Delivery -standardi tukee käyttötiloja vanhoista 5V/0,5A aina 48V/5A tasolle asti, jolloin väylää pitkin voidaan syöttää jo 240 watin tehoa. USB-virransyöttöä tuetaan jatkossa kasvavassa määrässä laitteita. Valikoimaan sisältyvät virtapankit, älykaiuttimet, PC-oheislaitteet, viestintälaitteet, lääketieteelliset laitteet, POS-päätteet, teollisuusnäytöt ja akkukäyttöiset sulautetut sovellukset.

    ST:n X-CUBE-TCPP-ohjelmistopaketti helpottaa kehitystä STM32Cube-ekosysteemissä ja tarjoaa kirjastot kolmelle ST:n portfoliossa olevalle USB Type-C -portin suojauspiirille. Nämä ovat TCPP01-M12, TCPP02-M18 ja TCPP03-M20.

    Reply
  13. Tomi Engdahl says:

    https://hackaday.com/2022/12/13/usb-c-cable-types/

    Sorting Cables Into (Mental) Boxes

    For a start, there are two variations of current capability – 3 A and 5 A, with 3 A being the bare minimum for any cable out there, and 5 A support being optional. Of course, as you would guess, the bargain bin cables might be undersized for even 3 A, but most cables will pass 3 A no problem. Last year, USB-C group introduced EPR, raising maximum voltage from 20 V to 48 V, and requiring changes to cables and connectors to increase isolation between power and data pins. That’s two more categories, SPR (20 V max) and EPR (48 V max). However, there are no 3 A EPR cables, so it’s a tiny bit less confusing than it sounds.

    Then, there are at least four variations of data transfer speeds. It used to be that you’d have USB 2-only and USB 3-only Type C cables, as well as Thunderbolt-certified cables. Now, there’s a new USB 3 standard which wants higher speeds, and needs higher-specced cables. Plus, there’s active USB-C cables that put the signal through redrivers or fiber optics for achieving long-distance operation. If you thought there might just some cabling variability that introduces additional small permutations inside and outside the specification, you are, unfortunately, correct.

    This gives us a three-by-four matrix of “which cable you might have on hand”. Three for 3 A, 5 A, or EPR 5 A, and four for cable speeds. There’s also plenty of blatantly out-of-spec cables out there – like charging-only cables without 2.0 pins, which is blasphemous as per USB specification. Of course, you can indeed buy these by accident, or intentionally. How do you figure out which ones you have? Let’s simplify the situation to the three-by-four case and mostly dismiss the exceptions – over time, the weird cables will become less and less prominent, as even bargain bin manufacturers will learn to keep it together.

    The undeniable benefit of having so many cable variations is that you can actually buy a $5 USB-C cable when you only need $5 worth of capabilities, and a $40 cable when you need $40 worth. 2.0-cables are also thinner, lighter and more flexible – you really don’t want to use a Thunderbolt cable when you want to charge your laptop on the go. Plus USB-C has facilities to distinguish between different cables! Let me show you.

    Your Cable Has A Computer In It… Almost

    When a power supply is capable of providing more than 3 A over a cable, it won’t do that instantly – first, it will check that the cable can handle such a current, and that the device connected is able to accept it.

    How does it check cable capability, exactly? By reading the cable’s “emarker”. An emarker is a memory chip inside the cable plug that encodes the cable capabilities and parameters, and taps into the CC channel in order to transmit them. It’s required for anything more than USB 3 speeds or 3A current, and there’s a myriad of parameters that could be encoded into an emarker, including even, ahem, country codes. Would you like to learn more? Here’s a programmable emarker (VL151) datasheet, it lists a ton of fun info you will be able to get out of an average emarker!

    https://datasheet.lcsc.com/lcsc/1806080019_VIA-Tech-VL151-A3-W_C209761.pdf

    Reply
  14. Tomi Engdahl says:

    Recently learned that the latest generation of USB-C power meters can actually read the E-marker chip. Finally I can figure our what cables are Gen1 vs Gen2 vs Thunderbolt 3 easily!!!
    https://www.reddit.com/r/UsbCHardware/comments/z2hncm/recently_learned_that_the_latest_generation_of/

    Reply
  15. Tomi Engdahl says:

    USB-kaapeli näyttää itse, millä teholla lataa
    https://etn.fi/index.php/13-news/14387-usb-kaapeli-naeyttaeae-itse-millae-teholla-lataa

    C-tyypin USB on käytännössä jo ottanut mobiililaitteiden universaalin liitännän paikan. Se siirtää datan ja latausvirran huippunopeasti. Mutta millä teholla kaapeli kulloinkin laitetta lataa? Nyt myynnissä on kaapeli, joka näyttää suoraan syötetyn tehon määrän watteina.

    Baseus on kehittänyt USBC-kaapelin, joka tukee 100 watin lataustehoa. tällaisia kaapeleita ovat markkinat pullollaan, mutta Baseus erottuu joukosta, sillä liitinosaan on lisätty LCD-näyttö, joka näyttää suoraan lataustehon.

    Reply
  16. Tomi Engdahl says:

    Your USB-C Cable probably SUCKS! Sooo is that Bad?
    https://www.youtube.com/watch?v=vKJWwBXRPuI

    In this video we will be having a closer look at USB-C cables and find out why most of them are actually not that great. We will be focusing on 100W power transfer so very fast charging. I will show you how much power loss 13 different USB-C cables produce and why most of them do not meet the standard specs. Let’s get started!

    0:00 The Problem with USB-C Cables
    1:49 Intro
    2:26 60W/100W cables?
    3:14 E-Marker Chip?
    5:04 Test Setup
    6:42 The Worst Performing Cable
    7:43 Test Results
    9:50 Verdict

    Reply
  17. Tomi Engdahl says:

    https://etn.fi/index.php/13-news/14424-oneplussan-seuraavan-lippulaivamallin-tietoja-julki-mukana-yllaetyksiae

    Yllättävin ja jo laajasti uutisoitu ratkaisu on pikalataustehon laskeminen 100 wattiin. Esimerkiksi syksyllä julkistetun 10T-mallin laturi oli jo teholtaan 150 wattia. Yllättäväksi ratkaisun tekee sekin, että sisarbrändi Realme on tuomassa markkinoille jo 240 watin latausta, mikä on uusiman USB PD -standardin mahdollistama maksimiteho.

    Kaikki Android-puhelinten nykyiset yli 100 watin pikalaturit perustuvat galliumnitridi- eli GaN-piireihin. Niissä maksimilatausteho on käytännössä 300 wattia, kun jännitteenä käytetään 6,2 volttia. GaN-piireissä hila ei fyysisesti kestä yli 7 voltin jännitettä ja 6,2 volttia on osoittautunut optimiksi. Jos tehossa mennään yli 300 watin, tarvitaan jonkinlainen jäähdytysratkaisu lämmöntuoton takia.

    Reply

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