Hi, guys. Welcome back to today’s video.
Several days ago, we took apart the charger king, the EGO EXINNO 240W,
which can support up to 240W and charge six devices at the same time.
You can click the upper right corner to check that.
And today, we got another six charging ports desktop charger from UGREEN,
which can support up to 200W.
So, ChargerLAB also gonna test and take it apart. Let’s go.
The packaging looks very high-end, with golden product name on the black background.
Open the box. The charger is protected by a plastic film and fixed in the middle.
It also comes with a thick power cord and a charging cable.
This is a woven cable.
And the connector is printed with “UGREEN.”
The length of the cable is about 1.04m (3’ 4.94”).
The power cord plug is matte with a small hole in the middle.
And what we got is UK standard plug.
The other side is the three-prong port, printed with 2.5A 250V.
There’s a 13A fuse inside the input plug for over-current protection.
This charger is pretty like mini version of the Mac mini.
And the UGREEN logo is in the middle.
Four USB-C ports and two USB-A ports are on the side.
And the USB-A port is purple.
There’s a rubber pad on each corner. And the specs info is in the middle.
Model is CD271.
It can support input of 100-240V~50/60HZ 2.5A.
The USB-C1/C2 can support up to 100W. And the USB-C3/C4 supports up to 65W.
The USB-A1/A2 only supports up to 22.5W.
The size of this desktop charger is 100 x 100 x 32mm (3.94 x 3.94 x 1.26 inches).
A square.
And the weight is about 513g (1.14 lb).
The ChargerLAB POWER-Z KT002 shows the USB-C1 supports almost all mainstream fast charging protocols.
And the USB-C1 also supports five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V5A,
and a set of PPS.
The supported protocols and PDO information of USB-C2 are the same as USB-C1.
So, both ports have the same performance and can support up to 100W.
The supported protocols of USB-C3 are the same as USB-C1/C2.
But PDO information of USB-C3 is slightly different.
Only 20V3.25A, not 5A.
The supported protocols of USB-C4 are also the same as the other three USB-C ports.
And the PDO information of USB-C4 is also the same as USB-C3.
And then, the USB-A1 port also supports all mainstream fast charging protocols,
except for PD and PPS.
And the USB-A2 is the same as USB-A1.
After the brief introduction of this desktop charger,
let’s take it apart and check why it can charge up to six devices at once.
Firstly, use the spudger to remove the top case.
There’s a large heat sink for heat dissipation.
Take out the PCBA module.
The back of the module is also covered ​with a brass heat sink.
Remove the heat sink.
The PFC boost inductor and transformer on the front are filled with thermal adhesive for heat dissipation.
Clean up the module.
All plug-in components are soldered on the front.
The input socket is at the bottom.
And the input circuits are on two sides.
Flip to the back. We can see some SMD components, including the MCU.
ChargerLAB found it adopts the PFC circuit and LLC topology.
There’re five secondary buck circuits to regulate the fixed voltage
and support fast charging of six USB ports.
Next, let’s introduce every single component inside.
The input fuse is from CONQUER. 5A 250V.
The black NTC thermistor is from Shiheng Electronics.
The diameter is 13mm,
and cold resistance is 1.5Ω.
The blue Y capacitors are used to suppress common mode interference.
And the first common mode choke is behind it.
Another Y capacitor is on the other side of the input socket.
The safety X2 capacitor is 0.33μF.
Two bridge rectifiers are from Pingwei and connected in parallel.
The heat sink between them can enhance heat dissipation performance.
Then, the pulsed DC is filtered by two film capacitors and toroidal-core filter inductor.
The film capacitors are from Nissei. 1μF 450V.
Next, here is the master controller of this charger, which is from NXP.
It integrates independent PFC controller and LLC controller and improves space utilization.
Two GaN ICs for PFC boost are from Innoscience.
650V, 260mΩ.
The PFC boost rectifier is from Pingwei and adopts DFN8 x 8 package.
650V, 6A.
The PFC boost inductor is tightly wound with tape for insulation.
And the thermistor is wrapped in heat shrink tube, used for overheating protection.
Two AiSHi filter capacitors are connected in parallel, and used for PFC output filtering.
450V 68μF.
Two GaN ICs for LLC topology is also from Innoscience.
Same model as that of the PFC boost.
The LLC resonant capacitor is 0.033µF 630V.
And here is the resonant inductor.
The filter capacitor that powers the primary controller is from Capxon.
47μF 35V.
Three SMD Y capacitors are all from TRX, featuring in small size and light weight.
The EL1019 optocoupler is used to regulate the output voltage.
Two output solid capacitors are vertically soldered on a small PCB.
820μF 25V.
The synchronous rectifier controller is under the solid capacitors and from NXP.
It integrates drivers for LLC synchronous rectification.
Next, let’s talk about these five independent buck circuits.
Four of them are the same.
The other one is used for two USB-A ports.
The protocol chip and MOSFET are soldered on the back of the small PCB.
Three capacitors and an inductor are on the front of each PCB.
Three capacitors are from Capxon, used for the buck and output filtering.
220μF 25V.
The protocol chips of five buck circuits are from Ismartware SW3516H,
which is used for buck control and protocol identification.
Two synchronous buck MOSFETs can form the half-bridge and are from allepic.
40V, 6.8mΩ.
Here is the small PCB for two USB-A sockets.
The output and input filter capacitors are wrapped with heat-shrinkable tube
and heat-resistant tape, respectively.
The input filter capacitor is 220μF 25V.
The output filter capacitor is 330μF 16V.
Both are from Capxon.
The protocol chip and synchronous buck MOSFETs of two USB-A ports are the same as the USB-C ports.
Two VBUS MOSFETs for USB-A are from Pingwei and adopt DFN3*3 package.
30V, 5.5mΩ.
Finally, there’s an Eastsoft MCU for the intelligent power distribution of each USB port.
It integrates 6KB FLASH memory and 1KB SRAM memory.
And the maximum frequency is 32MHz.
Well, that’s all components of this 6-ports UGREEN desktop charger.
Unlike the ordinary charger, you have to plug it into the wall outlet or power strip.
This charger can be easily placed on your desktop and charge almost all your devices.
The master controller integrates independent PFC and LLC controller.
And it also integrates four GaN chips from Innoscience,
used for LLC topology and PFC circuit.
The higher integration makes it more compact.
OK, that’s all for today’s video.
Please drop a like, leave your comments, and subscribe to us.
I’ll catch you guys in the next video. Bye.