Hi, guys. Welcome to today's video.
Today, we gonna take apart the Samsung 25W fast charger.
Model is EP-TA800.
It's the first USB-C charger of Samsung and the original charger for Samsung phones.
What we get is a black charger with fire-retardant PC case.
The front continues Samsung's design, "super fast charging."
It supports input of 100-240V~50/60HZ 0.7A,
and output of 5V 3A, 9V 2.77A, 3.3-5.9V 3A, 3.3-11V 2.25A.
It adopts fixed pins.
And USB-C is at the bottom.
Then, let's test its size.
41*51*26mm (1.61*2.01*1.02 inches).
Weight is 54g (1.9 oz).
Compared with Apple 30W charger,
slightly smaller.
But it's still bigger than some third-party GaN chargers.
Use ChargerLAB POWER-Z KT002 to test it.
It supports Samsung 5V2A, DCP, QC4, PD3.0, and PPS protocols.
It also supports two fixed POOs of 5V3A, 9V2.77A,
and two PPS of 3.3-5.9V 3A and 3.3-11V 2.75A.
Next, let's go ahead and take it apart.
The shell adopts ultrasonic welding.
So, we have to use to spudger to pry the top case.
Take it out and discharge the PCB.
We can see the PCB is clean and compact.
There's an isolation plate between the primary and secondary circuits.
The thermal adhesives on the back can enhance heat dissipation performance.
Let's start from the input.
The input fusible resistor is protected by a heat-shrinkable tube.
1.1Ω.
And the input bridge rectifier is on the back.
This electrolytic capacitor comes from CapXon, 400V 15μF.
And another capacitor is also from CapXon, 400V 22μF.
Here is the I-shaped inductor.
And the power supply capacitor of master control chip also comes from CapXon, 50V 10μF.
The master control chip is Samsung customized model from DIODES.
Model is GP801LS.
The primary switching MOSFET adopts SemiHow HCD70R600.
Withstand voltage is 700V.
The transformer is protected by plastic case.
The Everlight optocoupler is used for communication and output voltage regulation.
Then, turn to the output end.
Here is the blue Y capacitor.
And the spces of solid capacitor is 14V 560μF.
The synchronous rectifier controller is also a customized model.
And the synchronous rectifier adopts POTENS PDC6986BZ-5.
65V, 8.5mΩ.
The protocol chip adopts DIODES AP43771.
And the output VBUS switch MOSFET comes from Winning Team
and adopts DFN3030 package.
Withstand voltage is 30V.
Finally, the USB-C is wrapped in plastic case for reinforcement.
Well, that's all components of this charger.
As the original charger of Samsung phones, its quality is pretty good.
The key components come from DIODES.
And the capacitor comes from CapXon.
It can support mainstream protocols like QC, PD, and PPS.
So, it can be compatible with different devices.
The only disadvantage is the size, especially compared to some GaN chargers.
Ok, that's all for today's video.
We've also published the teardown videos of other Samsung chargers.
You can click the corners to take a look.
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See you in the next video.
Bye.