First, the appearance of the Greenlink 65W GaN charger
The front of the box is printed with the product appearance, the upper left corner is the UGREEN Greenlink brand and product name, the bottom of the GaN X65w and four major characteristics of the logo.
On the back of the box are the product features, specifications, and basic information about UGREEN Technology Co.
The box is designed as a drawer, with a cardboard tray to protect the product, and a carrying handle at the front for easy removal.
The charger is fixed in the groove.
The charger is made of PC flame retardant black casing, and looks almost square on the front, with a curved transition at the ends, and the Greylink logo in the center of the body.
The overall shape of the charger is square, and it looks like a piece of "tofu block".
The front and back of the body uses a laser texture process, which is anti-scratch and wear-resistant, while increasing the aesthetics and feel of the hand, full of business flavor.
The input side of the housing is labeled with the product's parameter information
Model No.: CD225
P/N: 80767
Input: 100-240V~50/60HZ 1.8A
Output:
USB-C1/C2: 5V3A, 9V2A, 121V1.5A. 18W Max
USB-C3/C4: 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A, 65W Max
Total Output Power: 65W
Manufacturer: Shenzhen Orange Fruit Electronics Co.
Supervisor: Shenzhen Greenlink Technology Co.
Products Has passed the CCC certification.
The plugs are made of separate plastic modules, and the foldable design makes the charger easy to carry and won't scratch other devices in your bag.
The four USB-C ports on the output side are all black rubber cores, with white coils rising up to separate them into two groups, and labeled with sequences and power parameters next to the ports, making it easy for users to differentiate between them.
Using vernier calipers, the length of the charger is 64.92mm.
The width is 64.95mm.
The thickness is 32.07mm.
The intuitive feeling of holding the charger in your hand is that, even with four ports, the charging head is still compressed into a very small volume.
The net weight of the charger is about 178g.
Using ChargerLAB POWER-Z KT002 to detect the output protocols of the USB-C1 port, it shows that it supports Apple 2.4A, Samsung 5V2A, DCP protocols, as well as QC2.0/3.0, AFC, FCP, MTK PE+2.0, PD3.0 and PPS multiple fast charging protocols.
The PDO report shows that the USB-C1 port also has four fixed voltage steps of 5V3A, 9V2A, 121V1.5A, 15V1.2A, and two PPS voltage steps of 3.3-5.9V3A and 3.3-11V1.65A.
Using KT002 to detect the output protocol of USB-C2 port, the supported protocols are exactly the same as those of USB-C1 port.
In addition, the PDO message is also the same as that of USB-C1 port. The single-port output performance of USB-C1 and USB-C2 ports is the same, and supports power blind plugging.
Using KT002 to detect the output protocol of USB-C3 port, it shows that it supports Apple 2.4A, Samsung 5V2A, DCP protocol, as well as multiple fast charging protocols such as QC2.0/3.0, AFC, FCP, SCP, MTK PE+2.0, PD3.0 and PPS.
The PDO report shows that the USB-C3 port has five fixed voltage steps of 5V3A, 9V3A, 12V3A, 15V3A, and 20V3.25A, as well as a set of PPS voltage steps of 3.3-21V3A.
Also through the test found that the USB-C4 port output protocol is the same as the USB-C3 port.
The PDO message is also the same, and both interfaces also support power blind plugging.
Second, Greenlink 65W GaN charger disassembly
The back of the body shell apart, the shell has a protruding plastic fixed column, components covered with isolation plate and brass heat sink.
Remove the isolation plate, and the center area underneath comes with a heatsink that is coated with silicone to help conduct heat.
Take the charger out, there is a small board on the input side, the pins are connected to the board via AC leads, and four small boards are welded to the output side, with black insulating boards behind them for primary isolation.
The other half of the fuselage shell is equipped with a one-piece isolation plate, which plays a role in isolation and fixation.
Remove the front of the PCB board heat sink and isolation board, transformers, capacitors and other components to be reinforced with glue.
The back of the PCB is also equipped with a heat sink and isolation board.
After removing the isolation plate, you can see two places on the back of the board that are glued to help conduct heat.
The two places where the glue is applied are the rectifier bridge and the charger's main control chip.
By analyzing the circuitry on the front and back of the board, we found that Greenlink's 65W 4C Gallium Nitride fast charger adopts the popular switching power supply with fixed voltage output and four independent bucking four-port output design architecture. And all four ports use the same secondary buck program, by an MCU for power intelligent distribution. Here we start from the input side to understand the information of each component.
A side view of the PCB, with a hollowed out center, and a small input board on the left, along with X-capacitors and other components.
The front side of the input panel features a time-delay fuse, NTC surge suppressor resistor, and ****-mode inductor.
The delay fuse is 3.15A 250V.
The NTC surge suppressor is used to suppress the inrush current.
*** Mode inductor jacket heat shrink tubing for EMI interference filtering.
Close-up of the safety X-capacitor from STE Matsuda Electronics.
Close-up of another ****mode inductor.
The TMBFR310 rectifier bridge is located next to the small plate on the input side.
There is another one on the back of the motherboard, two for equalizing the heat.
A look at the front of the PCB, with three high-voltage filtering electrolytic capacitors on the left.
All three capacitors are supplied by CapXon, and two of the larger ones are 400V 47μF.
The third one is 400V 27μF.
A glance at the other side of the PCB shows the transformer in the center, and on the left side of the transformer are the synchronous rectifier output filter capacitors and inductors.
The main control chip power supply capacitors, specifications for the 50V 10μF.
The main control chip of the charger adopts PI SC1936C, which is the latest release of PI's built-in Gallium Nitride power device PowiGaN main control chip, a wide range of voltages, the maximum of 75W of continuous power in the case of the adapter.
PI SC1936C datasheet information.
The transformer is wrapped in insulating tape all over the body with information sprayed on the top.
Two output anti-interference blue Y capacitors.
The secondary synchronous rectifier MOS adopts Hengtaike HGN070N12SL, NMOS, withstand voltage 120V, DFN5X6 package.
Hengtaike HGN070N12SL data sheet information.
Close-up of the synchronous rectifier output filtering solid capacitor, also supplied by Fontainebleau, with a specification of 25V 1000μF.
Another specification of 25V 470μF.
Close-up of the filtering inductor.
At a glance, the output side features a chip on the left side of the motherboard, and all four USB-C ports are vertically soldered using a small board.
No silkscreen MCU for intelligent power distribution on the ports.
The USB-C1 and C2 sockets are welded to two small green PCBs, with buck inductors and filtering solid capacitors on the front of the board.
The back design of the two small boards is also exactly the same, and both use the SmartRun SW3516H + Ruijun RUH4040M2 step-down output program, so the C1 and C2 single-port output performance is exactly the same. Below we have a detailed look at one of the boards.
USB-C1 and C2 small boards on the main control chip are used Smart Rong SW3516H, for the buck control and protocol recognition.
Smart Rong SW3516H is a highly integrated dual-port charging chip with multiple fast charging protocols, supporting fast charging output from any of the A+C ports, and dual-port independent current limiting. It integrates 5A high efficiency synchronous buck converter. It supports multiple fast charging protocols such as PPS/PD/QC/AFC/FCP/SCP/PE/SFCP, maximum output PD 100W, CC/CV mode, and dual-port management logic. All of these features allow users to take advantage of the next generation, high performance dual-port charging solution with minimal power consumption.
Information on the SmartWin SW3516H.
The SW3516H is equipped with two Ruijun Semiconductor MOS, model RUH4040M2, NMOS, withstanding 40V, used for synchronous rectification and bucking for the interface output.
Ruichips RUH4040M2 details.
Close-up of the buck inductor, protected by heat shrink tubing around the jacket and reinforced by glue in the center.
Synchronous rectifier buck output filter solid state capacitor, specification 25V 220μF.
Two 3157 toggle switches for switching between QC and PD voltage feedback terminals.
Close-up of the USB-C female chassis, black rubber core without exposed copper, female chassis over-hole soldering.
The USB-C3 and C4 connectors are soldered to the blue boards, and both boards have the same design, with buck inductors and filtered solid capacitors on the front of the boards.
The back of the board has a secondary step-down circuit, and the same as the C1 and C2 ports, it also adopts the Zhirong SW3516H + Ruijun RUH4040M2 step-down output program. Here is also a detailed look at one of the boards.
A close-up of Jirong SW3516H, used for USB-C3 and C4 port buck control and protocol recognition respectively.
Also external are two Rui Jun RUH4040M2 for synchronous rectifier buck for interface output.
Close-up of the buck inductor.
A close-up of the solid-state capacitors, 25V 330μF.
A close-up of the USB-C female chassis, with KRCONN on the metal casing, provided by Shenzhen Jingrui Xingye Technology Co.
All disassembled, take a family photo.
ChargeHead.com disassembly summary
Greenlink 65W 4C-port GaN fast charger is compatible with many protocols, supports multiple fixed voltage slots as well as PPS voltage slots, and has a wide range of overall compatibility. The C1 and C2 ports support 18W PD fast charging, and the C3 and C4 ports support 65W PD fast charging, and both sets of interfaces also support power blind plugging, support for cell phones, tablets and laptops and other devices fast charging needs, easy to use.
Charging head network through the disassembly of the understanding that UGREEN Green United 65W 4C port gallium nitride fast charger overall circuitry using switching power supply and four-way DC-DC architecture. The switching power supply part, composed of PI highly integrated main control chip SC1936C and Hengtaike synchronous rectifier MOS, fixed voltage output. The four DC-DC secondary step-down outputs are all adopted by Zhirong SW3516H + Rui Jun RUH4040M2 step-down output program.
Designed to be square and compact, the charger has a laser texture process on the front and back to increase the feel and aesthetics; the input side is equipped with foldable pins, and the output side is a USB-C interface but designed with a differentiated logo. The internal planning of the charger is neat and orderly, and made isolation and heat dissipation treatment, in addition to multiple filter capacitors, pure output, the output side of the same design scheme. The overall product is portable and easy to use, strong performance, full of business style.