The next generation c-type cable exposure supports 240W high power quick charging

Author:     Published in:2022/5/23 8:52:54    Hits:

On May 25, 2021, the USB-IF Association released version 2.1 of the USB Type-C Cable and Interface Standard, which updated the section on power supply capability. USB PD3.1 specification will be the original USB PD3.0 content into the Standard Power Range (SPR), the maximum Power remains unchanged at 100W; At the same time, Extended Power Range (EPR for short) is added. The maximum Power is Extended from 100W to 240W.


The EXPANDED power range EPR includes three fixed Voltage levels (28V, 36V and 48V) and three Adjustable Voltage Supply levels (AVS), according to usB-IF. The maximum current level remains unchanged at 5A; 100-140W power is 28V AVS, voltage range is 15V-28V; More than 140W to 180W power is 36V AVS, voltage range is 15V-36V; More than 180W to 240W is 48V AVS, the voltage range is 15V-48V.

According to the USB PD3.1 standard, USB type-c cables are classified into 20V common cables and 50V EPR cables. If the power output exceeds 100W, not only the 5A Cable of EPR (extended power) needs to be used, but also the SPR can enter the EPR by shaking hands with the EPR specific information between the Source, Sink and Cable. If the cable is Captive cable that is fixed to the charger, only a handshake is required between Source and Sink.

Recently, the charger head network has obtained the Type-C 3.1 cable launched by Junfa Electronics, to expose what the new cable will look like in the next few years in advance.

From the appearance, the connector Type is USB-C to USB-C, which is not much different from the common C2C cable.


The terminal head is made of white plastic integrated injection molding, which perfectly wraps and protects the internal chip. The mesh tail is lengthened to improve the bending resistance. Most of the cable damage is the outlet position, and the opening treatment will not be too stiff.


When the macro camera takes pictures of the usB-C interface, it can be seen that the design of full Pin pins is adopted. Due to the high bandwidth requirements of USB4, it can only be satisfied with full Pin, unlike low-speed cables that can be used without full Pin.


In terms of cable skin, The cable is made of nylon braided with interlacing to protect the wire body from wear and tear and provide higher durability.


The end-to-end length of a cable is 102cm, which is the most commonly used length in daily use.


By reading cable e-marker information through USB tester, it can be seen that the scheme is Yichong (0x315C). In terms of power transmission, it supports maximum 50V5A EPR high current transmission and USB2.0 transmission rate.


Apple 96W charger was used to connect the Zenfa electronic Type-C 3.1 cable to charge the Macbook Pro 2021, and the power reached 20.3V 4.57A 92.84W, reaching the upper limit of fast charging power.08.jpeg

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