Hi, guys. Welcome back to chargerlab’s teardown,
Today, our leading actor is the Nubia 120W GaN charger.
It was just released not long ago. Let’s take a look.
The appearance of the charger is very recognizable.
The silver casing is the design for whole series. Charger pins adopt foldable design.
And then, the width is 31mm (1.22 inches), the thickness is 86mm (3.38inches),
the length is 57mm (2.24 inches), and the weight 233g (8.21oz).
Take out the Apple 96W charger for comparison. The size of the two chargers is almost like this.
There is also a Nubia 120W single-port charger.
And the design is quite different. The single-port model is smaller.
Then take out 65W GaN charger. Both belongs to the same “Dao” series.
So, there are many similarities in appearance.
After connecting to the power supply, There is a blue indicator light in there.
Let’s test the protocol of USB-A port. It supports Apple 2.4A, QC2.0/3.0,
AFC, FCP, SCP, PE2.0. USB-C has additional PD and PPS protocol.
There are five fixed voltage gears: 5V, 9V, 12V, 15V, 20V.
Dual USB-C supports 60W and 60W power. And also supports three simultaneous
fast charging of 60W,30W and 30W, Which is useful for multi-device users.
Ok, time is up. Let’s tear it down. Firstly, welcome our friend, Mr. hammer.
After opening it, we can see what it looks like inside.
Pull slowly with pliers, and the whole module can be taken out.
The entire module is covered by isolation plates and heat sinks.
There is also a layer of insulating tape outside the heat sink.
There are separate thermal pads outside of other components,
which are used to reduce the temperature rise. Let’s take a look at the size of the PCB.
The length is about 82mm (3.22 inches), the width is about 51mm (2 inches),
and the thickness is about 23mm (0.9 inches). And then, we gonna see the components one by one.
First, here is the input filter circuit. This is a time-delay fuse.
There is an NTC thermistor next to it. There is also a layer of Heat-Shrink
Tubing for protection. There are two common mode chokes.
There is also a larger common mode choke on edge, wrapped by insulating tape.
The red one in the middle is an X capacitor.
Here is a small rectifier board and two bridge rectifiers above it,
which are used to spread the heat. Not only that, the charger is
also filled with a lot of glue among other components for heat conduction.
There is another X capacitor next to it. Here is a CBB film capacitor.
The bigger one in the middle is the filter inductor, covered by insulating tape.
Then, we can see PFC boost inductor here. Its PFC boost circuit is on another side.
This small one is a PFC boost controller from ON Semiconductor NCP1622.
The GaN enhancement-mode power transistor is from InnoScience.
On the other side, two electrolytic capacitors
for high-voltage filter are in the middle. And there are another two same capacitors
on a small board next to it. Except for the rubber sleeve for protection,
there is also an isolation plate next to capacitors for insulation.
For those four capacitors， three from Zhongyuan and one from Yongming.
And then, let’s see the switching power supply circuit.
This is main control chip of switching power supply, from ON Semiconductor NCP1342.
The high-voltage switch tube next to it also adopts InnoScience INN650D02.
Here is its transformer.
Here is the secondary rectifier board, and two solid capacitors on it for output filtering.
There is also a layer of tape under the capacitor for isolation and a small LED indicator.
There are synchronous rectifier controller and rectifier tube on the back of the small board.
We have to take it down to see.
The three small boards are all welded vertically on the PCB to further save space and have
corresponding step-down inductors. Let’s take down these small boards.
Firstly, it’s the small synchronous rectifier board,
with MPS synchronous rectifier controller on it.
There are two Alpha & Omega synchronous rectifiers next to it, and two solid
capacitors from Emerald are on the back. This is the small board for USB-A female,
wrapped by black insulating tape for insulation and dust prevention.
A step-down inductor and emerald solid capacitor are next to it.
The ismartware step-down protocol IC is on the back, used for USB-A step-down control
and protocol identification, followed by three external MOS tubes from Vanguard.
Two of them are used for synchronous rectification and step-down of
USB-A output, one as output VBUS switch. And then, let’s take a look at the USB-C female.
There is a MOS tube from Vanguard on both sides. And an MCU from MindMotion, to control the power.
Here is an output VBUS switch tube, a step-down inductor, and a solid capacitor from Emerald.
The layout is basically the same for another USB-C.
Same ismartware SW3516H, same MOS tubes and same output VBUS switch.
And the same step-down inductor and solid capacitor from Emerald.
Ok, that’s all for our today's teardown. And that’s all components for this charger. If you like this
video, please drop a like, leave any comments. For more content, please subscribe to the chargerlab
and visit our website: chargerlab.com. Stay tuned, and we’ll see you next time.