Hello everyone. Welcome back to our channel.
The product we gonna teardown today is Samsung 45W USB-C Fast Charging Wall Charger.
I think most Samsung users already know it.
It is the fastest Samsung mobile phone charger currently.
And its price is $41.11 on Amazon.
This time let’s skip the introduction (everyone is familiar with it) and just open it up.
The packaging contains the charger, dual type-c cable and some documents.
The plug will be a little bit different in different countries or regions.
The charger still adopts black shell.
The matte surface can reduce fingerprints and scratches.
A lightning logo and “Super Fast Charging” are in the middle.
The specification is on the back of the charger.
The model is EP-TA845.
It supports wide-voltage input of 100-240V 1.2A, which means it can be used worldwide.
Its output will be 5V/3A, 9V/3A, 15V/3A, 20V2.25A and three sets of PPS.
The manufacturer is Dongyang and is made in Vietnam.
It also passed the relevant certification.
Then, let’s see the size.
The length of the charger is about 52mm (2.05 inches).
The width is about 53mm (2.09 inches). The thickness is about 29.6mm (1.17 inches).
Compared with the Apple 30W charger we just tear down.
Almost the same.
Next, let’s take a look at the cable inside the packaging.
It has dual USB-C port and both ends are marked with “5A”.
The other side is marked with Vietnam.
The length is 1m.
Use the ChargerLAB POWER-Z KT002
We can see it’s a passive cable and has E-marker chip inside
It can support 100W charging but just USB 2.0 speed of data transmission.
1m. Confirmed again.
And then, let’s test its performance.
The test results show that this charger only supports Samsung 5V2A, DCP protocols,
and QC4, PD3.0 PPS fast charging protocols.
And it’s not compatible with other fast charging protocols.
The four supported fixed PDOs will be the same as what is printed in the shell.
Except that, it also supports three PPS PDOs of 3.3V-11V/5A, 3.3V-16V/3A, 3.3V-21V/2.25A.
ChargerLAB POWER-Z KM001C shows
the charging speed can reach about 35W when use it to charge Samsung S20 Ultra.
OK, after talking about the appearance and performance of the Samsung 45W charger.
Let’s take it apart to see the internal structure.
Pry to open the shell along the edge of the output side.
Take a look at the PCB module.
The front transformer is covered with black insulating plate and heat sink.
Those components are fixed by gray silicone.
The heating components on the back of the PCB are also covered with silicone.
There is a plastic insulation plate to isolate the high-voltage electrolytic capacitor and the output port.
We will clean up the PCB module and then introduce its inner components.
After the observation and analysis by chargerlab.
This charger adopts the typical architecture of switching power supply and protocol chip.
The high-voltage current comes in from the AC pin.
It will pass the fuse and filtering circuit.
And then rectified by rectifier bridge and filtered by high-voltage electrolytic capacitor.
Then the master control chip will control the transformer to step down.
Then rectify and filter it again.
Finally, the output voltage will be controlled by the protocol chip.
The input side has the fuse, common mode chock, safety X capacitor.
And the rectifier bridge is vertical, which can make full use of spaces.
This is the thermistor, common mode chock. And three high-voltage electrolytic capacitors.
All the capacitors come from CapXon.
The specification of the outside one is 400V 15μF.
The two capacitors inside are 400V 22μF.
A small capacitor from CapXon is in the corner,
used to power the master control chip.
And it’s 50V 10μF.
Here is the transformer.
The model information of the charger is printed on the top.
Which is controlled by the master control chip on the back.
The chip comes from PI,
a well-known American manufacturer.
It is customized by Samsung and belongs to InnoSwitch 3-Pro series.
It has built-in primary PWM controller,
primary switching tube, and secondary synchronous rectifier controller, etc.
Except for the master control chip.
A discharge chip of X capacitor from PI is also used on the primary side,
which is used to improve the energy efficiency of the charger.
Model is CAP200DG.
The synchronous rectifier MOSFET is next to the master control chip of the power supply
and is used to cooperate with it to convert the AC into DC.
Withstand voltage is 100V.
There is also a protocol chip belongs to MM101 series,
which is designed and produced by Samsung.
There are two solid capacitors on the front secondary side,
connected in parallel.
Both are 30V 300μF.
They’re used for filtering after rectification, which makes the output voltage more stable.
The output port has outer plastic for protection.
And the blue Y capacitor is next to it, used for reducing output interference.
You can see that there is also a 30V VBUS switching tube of output
next to the output port
After removing the transformer, which comes from Winning Team International.
OK, that’s all components of Samsung 45W USB-C fast charging wall charger.
I’d like to say that The components’ quality of
this Samsung charger is pretty good.
Its master control chip comes from the well-known brand PI.
And the chip has high integration, which makes it has fewer components.
But we still need to know the protocols
it supports are not as good as many third-party chargers.
If you just want to charge your own Samsung phone, it’s totally enough.
So for this $41.11 charger,
Do you think it’s worth it?
And compared with third-party chargers, which one you’d like to choose？
Leave your comments below and subscribe to us.
I’ll catch you guys in the next video.