Hello, everyone!
Welcome back to today’s video.
Today, we gonna tear down a powerful power brick,
which is the UGREEN 100W fast charger.
It comes with three USB-C and one USB-A.
This charger continues the square shape and adopts the silver-grey.
The surface feels like on a paper.
We can see the “UGREEN” is printed on the front, and “100W” is on the back.
The charging pins can be folded, so it’s very convenient to bring it to travel,
especially in the holiday season.
Then, let’s take a look at the specs.
Model is CD226.
It supports input of 110-240V~50/60Hz 2.3A.
The USB-C1 and C2 can support up to 100W.
And the USB-C3 and USB-A can support 22.5W.
The total output of the four ports is up to 100W.
Produced by UGREEN technology.
There’re four ports on the other side and printed with info.
Then, let’s test its size.
The length and width are 69mm (2.72 inches).
And the height is 33mm (1.3 inches).
Weight is 227g (7.8 oz).
You can easily hold it in your hand even though it can support 100W and four outputs.
Compared with Apple 96W charger, and you can see the difference.
This cable comes with this charger.
After using POWER-Z KT002 to test it, we can see it supports 100W charging.
The length of this cable is 1.5 m (4’11.1”), which is capable for most situations.
Then, we will use ChargerLAB POWER-Z KT002 to test all those four ports.
USB-C1 and USB-C2 share the same specs.
They can support QC2.0/3.0, AFC, FCP, SCP, PE2.0, PD3.0, PPS protocols.
And they can also support five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V5A,
and one PPS of 3.3-21V3A.
The USB-C3 supports QC2.0/3.0, AFC, FCP, SCP, PE2.0, PD3.0, PPS protocols.
And except for the PD3.0, PPS, the USB-A can support rest of the protocols.
Those two ports can support four fixed PDOs of 5V3A, 9V2.44A, 12V1.83A, 15V1.47A,
and two PPS of 3.3-5.9V3A, 3.3-11V2A.
After the brief introduction and simple test,
we gonna remove the shell to check the internal structure.
After opening the shell, we can see the AC pins are connected to PCB by wires.
There’s a heat sink on the top of PCB module, wrapped with yellow insulating tape.
The back is covered with thermal pads, isolation plates, and heat sink.
Remove the heat sink.
We can see lots of silicon adhesives between the components.
Then, let’s clean it up.
This is the isolation plate between the electrolytic capacitor and the small output PCB.
It also adopts multiple PCBs.
This is the small PCB at the input.
Two electrolytic capacitors and a bridge rectifier are on it.
There is also a small PCB at the output.
Four USB receptacles are soldered on it.
Flip to the back.
We can see lots of controllers and MOSFETs.
ChargerLAB found this charger adopts the architecture of high-frequency QR flyback topology and
secondary step-down circuits.
Firstly, the switching power supply outputs a fixed voltage.
Then, multiple secondary step-down circuits can output different voltages.
This charger does not have the PFC boost circuit that most high-power chargers have.
So, it can be smaller.
Then, let’s take a look at every single component.
The specs of time-delay fuse is 3.15A 250V.
The yellow cube is safety X capacitor.
Those two black components are varistor and surge suppressor.
There are two common mode chokes, used to filter out EMI interference.
There are two bridge rectifiers on the side of small PCB,
used to convert the high-voltage AC into DC.
Two electrolytic capacitors are on the other side.
There are another three electrolytic capacitors on the main PCB.
All of those five electrolytic capacitors are from SZ-Gather.
The capacitor can make the high-voltage DC more stable.
The transformer is wrapped by insulating tape.
There’s a thermistor, which is fixed by silicon adhesives and used to detect temperature.
There is a small capacitor on the other side, used to power the master control chip.
Then, flip to the back.
Let’s see what’s on the back.
The master control chip is a familiar model.
ON Semiconductor NCP1342.
which is very common in the architecture of high-frequency QR flyback topology.
The GaN IC of the primary circuit is Navitas NV6125,
which adopts QFN 6*8mm package.
It also integrates driver and GaN FET, which can reduce the external components.
Here is the optocoupler, used for output feedback.
Here are two SMD Y capacitors from TRX.
This tiny chip is the synchronous rectifier controller.
Two Will synchronous rectifier MOSFETs are next to it.
After introducing the switching power supply, Let’s move to the secondary step-down circuit.
Those three solid capacitors at the output come from APAQ,
used for filtering after synchronous rectification.
And there’re another three solid capacitors on the back, used for the output filtering.
Actually, there’re three independent secondary step-down circuits.
The USB-C1 and C2 share the same circuit.
There’re three protocol chips, which control three step-down circuits.
Model is Ismartware SW3516H.
It integrates 5A high-efficiency synchronous step-down converter.
It can also support any port fast charging of USB-C + USB-A and dual ports current limit.
Except for the protocol chip, there’re two MOSFETs and a step-down inductor
for every single step-down circuit.
They can cooperate with protocol chips to step down.
And this external MCU is responsible for power distribution.
Well, that’s all components of this UGREEN 100W fast charger.
It has three USB-C and one USB-A.
We can call it an “all in one” charger.
And you can easily put it into your bag when you go out.
Except for this one, ChargerLAB also published some teardown videos of 100W chargers
from other brands, such as Baseus, Satechi, Aohi.
You can simply click the corners to check it out.
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and we will make all kinds of power-related videos in the future.
This is ChargerLAB.
See you in the next video.
Bye.