Hi, guys. Welcome back to today's video.
Today, we got a 65W GaN fast charger from TEGIC.
We also posted a video about TEGIC power station.
You can click the upper right corner to take a look.
The packaging continues the design of TEGIC 30W mini fast charger.
It contains the charger and manuals inside.
Let's see the charger.
The ultra-thin charger has been very popular in recent years.
Many brands have released their ultra-thin chargers.
So does TEGIC.
This 65W charger is pretty recognizable.
And it's equipped with foldable prongs.
So, it's like a tiny toast when folded.
Take a look at the specs info.
Model is A12-CN.
The input and output can be divided into two parts.
And it supports wide-range input and up to 65W output.
Designed by TEGIC.
The USB-C port is at the top.
The size of the charger is
88*41*12mm (3.46*1.61*0.47 inches).
And weight is about 70g (2.47 oz).
Compared with Apple 67W, the thickness is only half of Apple charger.
And then, compared with Huawei 66W ultra-thin charger
and Realme 50W mini charger, the TEGIC charger is slightly thicker.
The ChargerLAB POWER-Z KT002 shows it supports Apple 2.4A,
Samsung 5V2A, DCP, QC2.0/3.0, PD3.0, and PPS protocols.
It also supports five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A.
and a set of PPS.
OK. The next step is definitely to take it apart.
It adopts ultrasonic welding.
So, it's pretty hard to open it.
We have to pry it little by little and be patient.
After opening it, there is a layer of graphite thermal pad under the yellow insulating tape,
which can spread the heat evenly.
This is the PCB module, which is covered by thick silicone adhesives.
Let's remove it and then discharge the PCB for security purposes.
Here are the input prongs,
and then remove them from PCB.
A layer of yellow insulating tape is on the other side.
The prongs are fixed by screws.
The planar transformer is on the front.
Those two cylinders are electrolytic capacitors from Yongming.
Here is the output solid capacitor, which is placed horizontally to reduce the thickness.
All those special components and layouts can make this charger so thin.
Firstly, the time-delay fuse comes from Lanbao TB series
3.15A 250V.
Then, the common mode choke can filter out
EMI interference and is placed between prongs to save space.
The safety X capacitor can suppress differential mode interference.
0.1μF.
Then, the bridge rectifier can convert AC into pulsed DC.
Model is TT8M, withstand voltage is 1000V.
And then, two filter capacitors convert it into DC, which are from Yongming KCX series.
47μF 400V.
The differential mode choke is connected in series between the two capacitors.
After filtered by the electrolytic capacitor,
the DC can be converted into low-voltage AC through the transformer.
And the GaN Power IC is controlled by master control chip for high-frequency switching.
The master control chip comes from Kiwi KP2202,
which is a high-frequency quasi-resonant flyback controller.
It integrates high-voltage startup and X-capacitor discharge.
The switching frequency can be adjustable at 500 kHz, 300 kHz, and 140kHz.
There is a Yongming capacitor, wrapped in heat-shrinkable sleeve.
4.7μF 160V.
The GaN Power IC is from Navitas NV6136A, which adopts QFN6*8 package.
The resistance is 170mΩ, and the switching frequency is 2MHz.
It integrates GaNSense lossless current sampling technology and does not require
external sampling resistors, which can save space and improve conversion efficiency.
Remove the planar transformer, which is covered with heat resistant tape for insulation.
The synchronous rectifier and controller are on the front.
And seven MLCC filter capacitors are on the back.
Smash the magnetic core to pieces.
And you can see the coil of the planar transformer.
The low-voltage AC from transformer is converted into pulsed DC after synchronous rectification.
The synchronous rectifier controller is from Joulwatt JW7726B,
which is a synchronous rectifier controller that supports CCM, DCM, QR, and ACF.
The synchronous rectifier is from AOS AON6220, which adopts DFN5*6 package.
100V, 6.2Ω.
Two SMD Y capacitors are from Anshan Keifat, marked with 681M and 102M, respectively.
Here is the USB-C port.
Two solid capacitors are next to it, which can filter out pulsed DC into pure DC.
They are from Yongming NPX series.
330μF 25V.
Here is the CT1019 optocoupler.
The protocol chip can inform the required charging voltage
to master control chip through the optocoupler.
The protocol chip is from SONIX SNPD1683, which is a highly integrated USB-C
port controller that complies with the latest PD and QC5 standards.
Well, that's all components of this ultra-thin charger.
To achieve the ultra-thin thickness, we find its internal components and
layout have been completely changed compared to other typical chargers.
You can even tuck it into the small pocket of your jeans, which is very convenient when you're out.
OK. That's all for today's video.
You can click the corners to view other TEGIC products if you're interested.
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See you in the next video. Bye.