Comments on: Higher power USB-C will deliver 240W https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/ All about electronics and circuit design Sun, 19 Apr 2026 21:53:56 +0000 hourly 1 http://wordpress.org/?v=3.9.14 By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1875050 Tue, 07 Apr 2026 10:13:12 +0000 https://www.epanorama.net/blog/?p=188745#comment-1875050 https://etn.fi/index.php/13-news/18746-gan-vie-usb-c-n-teollisuuteen

USB-C on tähän asti ollut käytännössä kuluttajalaitteiden liitin. Nyt se alkaa murtautua myös teollisiin virtalähteisiin. Renesas Electronics on esitellyt GaN-pohjaisen AC/DC-alustan, jossa USB-lataus yhdistyy jopa 500 watin teholuokkaan.

Keskeinen muutos ei ole yksittäinen laturi, vaan arkkitehtuuri. Renesasin uusi Half-Wave LLC (HWLLC) -topologia on suunniteltu skaalautumaan noin sadasta watista aina 500 wattiin ilman perinteisten ratkaisujen kokoon, lämpöihin ja hyötysuhteeseen liittyviä kompromisseja. Samalla samaan kokonaisuuteen on integroitu sekä tehokerroinkorjaus (PFC) että resonanssikonvertteri.

USB-C:n rooli tässä on tarkasti rajattu mutta merkittävä. USB Power Delivery -spesifikaation Extended Power Range (EPR) nostaa liittimen maksimitehon 240 wattiin (48 V, 5 A), ja Renesas tuo tämän osaksi suurempaa virtalähdealustaa. Käytännössä USB-C ei vielä kanna koko 500 watin kuormaa, mutta siitä tulee osa samaa teollista tehonsyöttöarkkitehtuuria.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1873084 Wed, 11 Mar 2026 18:37:02 +0000 https://www.epanorama.net/blog/?p=188745#comment-1873084 “Blooper” Is a Null Modem Cable for the Modern USB Era
Clem Mayer invented this USB Looper, aka “Blooper,” for direct computer-to-computer communication in the modern era.
https://www.hackster.io/news/blooper-is-a-null-modem-cable-for-the-modern-usb-era-9c2dbd740279

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1871687 Mon, 23 Feb 2026 20:36:20 +0000 https://www.epanorama.net/blog/?p=188745#comment-1871687 Probing a USB analog audio adapter
https://www.edn.com/probing-a-usb-analog-audio-adapter/?fbclid=Iwb21leAQJi-JleHRuA2FlbQIxMQBzcnRjBmFwcF9pZAwzNTA2ODU1MzE3MjgAAR4EuUloLzv8Kq-GgsJIqcZnHTn_EkapsuD9Cl9hlZjrbm5k4L3a4ABTsHaBFQ_aem_NTaIcSXckecNYTqhfE9cxQ

How do engineers squeeze all the necessary circuitry (and what is it?) into one of these devices, and do so this inexpensively?

With the demise of analog audio line out, headphone (output-only), and headset (adding mic-in) jacks in modern electronics devices—computers, smartphones, tablets, and the like—alternative methods of connecting analog audio sources and destinations are becoming increasingly common. Bluetooth-based wireless mating is certainly one option

The other common option involves instead leveraging the digital audio (plus power, along with other functions) connections that are still present in these devices.

Now that Apple has transitioned its devices to USB-C, both it and Google, along with others, offer(ed, in Google’s case) diminutive, cost-effective, and performant USB-C-based successors

And…whaddya know…for a pleasant change, the C-Media CM3271 USB audio controller shown in the earlier conceptual diagram actually matches what’s on the PCB underside!

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1870765 Thu, 12 Feb 2026 16:56:22 +0000 https://www.epanorama.net/blog/?p=188745#comment-1870765 Bilteman edullinen USB-C-kaapeli vakuutti TM:n testissä – Applen kaapelille tyly tuomio
https://tekniikanmaailma.fi/bilteman-edullinen-usb-c-kaapeli-vakuutti-tmn-testissa-applen-kaapelille-tyly-tuomio/

Usb-c-kaapeleiden ominaisuuksia mitattiin käyttöön suunnitellulla erikoismittarilla, joka ilmoittaa käytettyjen johtimien lukumäärän lisäksi kaapelin sisäisen vastuksen. Suuri vastusarvo kielii yleensä liian pienestä johtimen paksuudesta suurella virralla tehtäviin latauksiin.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1870260 Sat, 07 Feb 2026 20:32:57 +0000 https://www.epanorama.net/blog/?p=188745#comment-1870260 https://tekniikanmaailma.fi/lehti/3a-2026/testi-edulliset-usb-c-kaapelit-2-36-e-heikoin-lenkki-latauksessa-ja-siirrossa/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1868689 Tue, 13 Jan 2026 14:26:34 +0000 https://www.epanorama.net/blog/?p=188745#comment-1868689 https://www.reddit.com/r/embedded/comments/162wpp3/capacitor_selection_for_usb_power_switch/
https://electronics.stackexchange.com/questions/279569/how-do-i-create-a-usb-cable-with-a-capacitor-in-line

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1868054 Fri, 02 Jan 2026 08:13:59 +0000 https://www.epanorama.net/blog/?p=188745#comment-1868054 https://www.facebook.com/share/p/17dBybb8WH/
Laitoin githubiin viimeisimmän projektini C-Portify.
https://github.com/1c3d1v3r/C-Portify

Projektin osilla voi korvata USB-B portin USB-C portilla. Kuvassa on modattu TL866-II+ ohjelmointilaite.

Minulta löytyy jokunen ylimääräinen jos jotakuta kiinnostaa.

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1867473 Mon, 22 Dec 2025 12:41:19 +0000 https://www.epanorama.net/blog/?p=188745#comment-1867473 The representative, who either sought to deny her service with an absurd remark or was entirely confident in his assessment, claimed that the Pixel’s swollen battery was caused by the use of a Samsung charger.

Read more here: https://wccftech.com/google-service-center-pixel-swollen-battery-due-to-using-samsung-charger/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1865634 Thu, 20 Nov 2025 11:32:28 +0000 https://www.epanorama.net/blog/?p=188745#comment-1865634 Posted onNovember 17, 2025 by Jean-Luc Aufranc (CNXSoft) – 1 Commenton pdsink – An open-source USB PD 3.2 sink stack for embedded devices
pdsink – An open-source USB PD 3.2 sink stack for embedded devices
pdsink is an open-source USB Power Delivery (PD) 3.2 sink implementation for embedded devices released under an MIT license.
https://www.cnx-software.com/2025/11/17/pdsink-an-open-source-usb-pd-3-2-sink-stack-for-embedded-devices/

pdsink highlights:

USB PD 3.2, SPR (Extended Power Range), and EPR (Extended Power Range for 28V and up) support on the sink side.
Platform-agnostic C++ core that does not depend on a specific HAL or RTOS.
Reference implementation using OnSemi FUSB302B + FreeRTOS (ESP32-C3).
MIT license enabling the project to be used in commercial products without conditions.

pdsink can be found on any “sink” device (aka power consumer) such as tools, lab gear, and custom PD-powered devices. Vitaly stresses that the project does not support source role (SRC), nor DRP / DFP / FRS / Alt Modes. You’ll find the source code, one example called “fusb302_rtos_esp32c3_arduino”, and documentation to get started on GitHub.

https://github.com/pdsink/pdsink

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2021/05/27/higher-power-usb-c-will-deliver-240w/comment-page-3/#comment-1859419 Mon, 11 Aug 2025 14:49:24 +0000 https://www.epanorama.net/blog/?p=188745#comment-1859419 It is IMPOSSIBLE to make the Ultimate USB-C Cable!? (High-Speed)
https://www.youtube.com/watch?v=LOIVrVVYBfA

In this video we will have a final look at USB-C cables. I already created the “perfect” USB-C PD cable that can transfer 240W with minimal losses. But viewers asked for a High-Speed USB-C cable instead. So how hard can it be? Well, let’s say shielding, twisted wires, EMI and much more will be topic of this video ;-) Let’s get started!

Thanks to Mel Science for sponsoring this video!

0:00 You Dislike my USB-C Cable
2:16 Data Transfer does not work?
4:45 Shielding is IMPORTANT
6:43 Making a High-Speed USB-C Cable
9:04 Twisted Wires are IMPORTANT
10:13 Final Test & Verdict

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