Ruide QC4+ and disassembly

2018-05-14 11:19:46

Ruide original charger CD106 equipped with Qualcomm snapdragon 845 processor, the domestic first released 18W QC4 + fast charge technology charger really surprised a lot of consumers, in order to support QC4+ protocol, Ruide designed it a USB-C output interface, the output is 5V/3A, 9V/2A, 12V/1.5A, 3.3-5.9V/2A, 3.3-11V/2A, and the maximum power is 18W, but it can literally reach 22W when it shows 11V,and such high hardware configuration is counted to have met consumers expectation.What about the specific performance of QC4+ original fast charger?

1、Ruide QC4+ appearance

Separate outer package, white shell, simple and refined

CD106 original QC4+ appearance


TechnologyUSB PD4.0

Input100-240V-50/60Hz 0.5A

Output5V 3A/9V 2A/12V 1.5A 

         3.3-5.9V 3A/3.3-11V 2A(18W Max)



Model CD106, manufactured by Shenzhen Ruide Electronics, has a CCC mandatory certification mark and efficiency level VI mark at the bottom. The input supports 100-240V 50/60Hz 0.5A, and the output is 5V/3A, 9V/2A, 12V/1.5A, 3.0-5.9V. /3A, 3.3-11V, 2A, a total of five sets of gear, maximum power is 18W

2 Ruide QC4+ The tests

Authoritative detection from the charger web shows: When the USB PD protocol is detected, it indicates that the charger supports the USB PD3.0 protocol and supports the PPS specification. The USB PD protocol has three fixed voltage output gears of 5V, 9V and 12V,and two fixed voltage output gears of 3.3-5.9V and 3.3-11V, and the actual output capability of the test is exactly the same as the nominal parameters.

When charging iPhone8Plus,peak power can reach 18w, and support USB PD fast charging

When charging Huawei P20 PRO,peak power can reach 15w, and support USB PD fast charging

When charging Xiaomi model 10, power can reach 18.5w,which is beyond the nominal with a design margin

Test table of compatibility for mobile phones

Step test

Device temperature test

In the mobile phone compatibility test, the original QC4+ charger can enable high-voltage fast charge mode for all major brand mobile phone devices. Under the general trend of USB PD fast charging, it has found a compromise point. The QC4+ fast charging protocol maintains the advantages of QC3.0 and is compatible with USB PD3.0, PPS specification, and beitself  but no obey the development discipline of the environment. It can be seen in the test that the performance of the CD106 is very impressive, the mainstream devices are almost compatible, and the USB PD protocol power supply is preferred during the charging process.

3、Ruide QC4+The disassembly Ruide

Open the shell

PCB pin device surface overview

 well glued,and PCB chip capacitors and transformer are well fixed

PCB veneer device surface overview

Good safety measures with plastic sheet isolation between the primary and secondary sides

Secondary measurement through the optocoupler isolation for output voltage and current feedback, in order to meet CCC certification safety requirements,and to prevent electromagnetic interference. SiF7N65D is a power MOS that from SHENZHEN SI semiconductors



Chip of 1791-02 is Dialog PMW initial controller, model is iW1791

details for Dialog iW1791

Silk screen 9K01 UA 1810 is Dialog's latest built-in current detection PD3.0 controller iW657P, supporting QC4+. The iW657P uses Dialog's proprietary secondary-to-primary digital communication technology. When paired with the iW1781 or 1791, only one optocoupler is needed to transmit all the required information to the primary side, including the output voltage request and output Current limit, output under voltage, output over voltage, fault and reset signal. The iW657P has an built-in optocoupler driver to reduce cost and over voltage protection on the D+/D-/CC1/CC2 pins. It can detect overheat faults with an external NTC resistor. It integrates an output current detection circuit to provide the adapter over current protection

Dialog iW657P  details

Screen printing 603I is Dialog's synchronous rectification driver iW676; SG60N15S is a synchronous rectifier, and iW676 constitutes synchronous rectification.Tthe bottom left is the AO7534 MOS for the VBUS switch

Dialog iW676  function detail

The primary electrolysis is very firmly fixed by the glue. The Y capacitor is followed by an insulating plate, an isolation transformer and a small separate output  plate.

4、Ruide QC4+Summary

CD106 is the first product in China which can support QC4+ fast charge protocol and mass production. The Ruide QC4+ charger has been eye-catching since its release. In the domestic mobile phone brands, there are already plenty of mobile phones supporting QC4+fast charge protocol. Using Qualcomm's latest QC4+ fast charging technology, the charger performance is equipped with a USB-C output interface, nominal 18W, and the measured power can be up to 22W. The compatibility of QC4+ charger is also pretty strong. It can support QC3.0/2.0 and USB PD3.0 PPS standard, QC4+ charger materials are well used, and Dialog iW1791 as PMW controller on the primary side and secondary  side is made with Synchronous rectification scheme, composed of Dialog iW676 and MOS tube, and Dialog's latest PD3.0 controller iW657P is adopted as QC4+ protocol chip. This charger has excellent performance, exquisite workmanship and materials well used