Recently, the charging head network got a 40W fast charger from UGREEN GreenLink, equipped with dual USB-C interfaces, all support 20W PD fast charging, and support dual-port fast charging can not be powered down, you can simultaneously charge 20W fast charging for two iPhones 13, for dual-wielding parties or couples, a charger can meet the daily fast charging needs of mobile phones, charging without waiting. The following charging head network will disassemble this product to see how the material is made.
It is worth mentioning that the charging head network has also disassembled the GreenLink 65W 2C1A Gallium Nitride Fast Charge Charger, the GreenLink 100W 3C1A Four-Port Fast Charge Desktop Charge, the GreenLink 100W 3C1A Four-Port Gallium Nitride Fast Charge, the Green Link Mini 30W Gallium Nitride Fast Charge, the Green Link Little Diamond 20W PD Fast Charge Charger and many other chargers, welcome to check it out.
First, the appearance of GreenLink 40W dual C port fast charging
The front of the box is printed with the UGREEN brand, charger exterior drawing, name and three major selling point logos.
Charger parameters and branding information are printed on the back.
The package contains the charger and product warranty card.
The charger adopts a white shell of PC material, the main surface of the piano paint process treatment, the corners are too rounded, and the feel is good.
The front center of the fuselage is printed with the UGREEN brand logo.
The flat cut surface design of the input end can be well fitted to the wall plug and used stably.
Charger parameters are printed on the housing:
Model: CD243
Input: 100-240V~50/60HZ 1.0A
USB-C1/C2输出:5V3A、9V2.22A、12V1.67A、3.3-5.9V3A、3.3-11V1.8A
Total output power: 40W
Manufacturer: Dongguan Aoqiang Electronics Co., Ltd
Producer: Shenzhen GreenLink Technology Co., Ltd
The product has passed the 3C certification.
The charger is equipped with foldable GB plugs, which is portable and will not scratch other equipment in the bag.
The output is equipped with dual USB-C interfaces, which support power blind plug, but there is also a distinguishing logo printed next to the interface.
The measured charger body height was 59.19mm.
The width is 51.96mm.
The thickness is 27.89mm.
Intuitive feeling of the charger in your hand.
Net weight is approximately 104g.
The USB-C1 port measured using the Chargelab POWER-Z KT002 supports Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0/3.0, PE2.0, PD3.0, ppS fast charging protocol.
At the same time, the C1 port has three fixed voltage gears of 5V3A, 9V2.22A and 12V1.67A, as well as two sets of PPS voltage gears of 3.3-5.9V3A and 3.3-11V2.2A.
In addition, the output protocol of C2 port is the same as that of C1 port.
The PDO message is also exactly the same, that is, the performance of C1 and C2 ports is exactly the same, and it supports blind insertion.
Second, the Green Link 40W dual C port fast charge disassembly
The input housing is detached and the pins are secured using a black plastic plate and a screw package.
The measured module length was 54.27mm.
The width is 46.76mm.
The thickness is 21.09mm.
There is an insulated isolation plate and brass heatsink on the back of the motherboard, and the tape is attached together.
At a glance on the front of the motherboard, you can clearly see the input and output filter capacitors and transformers on the board in pairs, and the design of two independent switching power supplies is adopted, which is also the reason why the total output power of this charger is 40W and does not lose power.
At a glance on the back of the motherboard, the two switching power supply circuits on the left and right sides are clearly demarcated, and the peripheral circuits are very simple.
It was observed that this charger uses two independent but identical QR switching power supply architectures, and the protocol chip controls the output voltage of the interface. Let's start with the inputs to understand the information of each device.
At a glance, there are SMD fuses, NTC surge suppression resistors, common-mode inductors, I-inductors, and high-voltage filter electrolytic capacitors.
The patch fuse comes from Sapphire and is rated at 2A.
NTC surge suppression resistors are used to suppress the upwelling inrush current.
Common mode inductors are two-wire wound for filtering out EMI interference.
WRMSB30M rectifier bridge from Wolde, rectifier bridge from Shenzhen Wald Industrial Co., Ltd., this soft bridge through the softer recovery curve, relatively smooth shutdown characteristics, can reduce the diode junction capacitance to achieve very little harmonic oscillation produced effect.
Charging head network disassembly learned that the use of Wold WRMSB30M also has Pinsheng 65W 2C1A gallium nitride fast charge charger, instant 65W 2C1A gallium nitride fast charge charger, Momix 65W 2C1A gallium nitride fast charge charger, Maddodo 30W 1A1C fast charge charger and other products.
I-beam inductive jacket insulated tube.
The high voltage filter electrolytic capacitors are from CapXon Fongbin and are all available in 400V 15μF specifications. The charging head network learned that Fengbin capacitors have been adopted by more than 100 fast charging products of well-known brands such as Huawei, Greenlink, ANKER, Xiaomi, vivo, HP and so on, and the quality is also very reliable.
The main control chip power supply capacitor comes from Kaiser Xin Electronics, and the specifications are 100V 6.8μF.
The switching power supply main control chip adopts Onbau OB2631U, which integrates DCM PWM controller and high voltage switch tube, optimized for high performance and low standby power consumption and low cost switching power supply. In addition, complete protection features are available, including cycle-by-cycle current limiting, overload protection, undervoltage lockout, and internal overtemperature protection.
Another Close-up of the OB2631U.
The middle area is two transformers.
Transformer close-up.
At the output, the USB mother is soldered to a small board with a blue Y capacitor in the center.
CT 1018 optocoupler for primary secondary communication, feedback regulation output voltage.
Another CT 1018 photocoupler close-up.
Y capacitance close-up.
Synchronous rectifier chip adopts ONBA OB2004, built-in synchronous rectifier tube and synchronous rectifier controller, support 3-12V output, high integration.
A close-up of another Onbay OB2004 synchronous rectifier chip.
The four filtered solid capacitors at the output are all from Yubang, and the large size is 16V 470μF.
The small size is 16V 220μF.
The output board is equipped with protocol IC and output VBUS switch tubes on both sides of the board.
The protocol chips of the two C ports are made of ONPAR OB2613, which is a high-precision and highly integrated USB PD controller developed by ONBA, which has passed the PD3.0+ PPS certification and Qualcomm QC4+ test certification. Support PD3.0, PPS, QC4/4+, MTK PE+, Huawei FCP protocol, APPLE fast charge recognition, Samsung fast charge recognition, etc. Through the reserved GPIO settings, the A+C port dual-port fast charging design can be supported, which is extremely cost-effective.
Close-up of the output VBUS switch tube, silk screen B3006.
USB-C female close-up, via welding.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
Greenlink 40W charger adopts PC flame retardant material shell, smooth fuselage and good hand feel. 40W is the total output power of the charger, supporting two iPhones 13 20W fast charge can not be powered down, in addition to the foldable disassembly, it is very friendly to groups such as dual-wielding parties, boyfriends and girlfriends, or business people who often have to take out on business trips. In addition, the charger is compatible with QC, PD, PPS and other fast charging protocols, and has good compatibility with xiaomi, Samsung and other brand mobile phones.
Through disassembly, the charging head network found that this product is equivalent to two identical 20W fast chargers built-in, and the independent outputs of the dual ports do not affect each other. Using Onbao OB2631U+OB2004+OB2613 full set of high-integration fast charging solutions, Fengbin and Yubang two major brand capacitors are responsible for input and output filtering, passive components are also glued and reinforced, the overall material workmanship is good.