Hello everyone, welcome back to our channel.
What the ChargerLAB brings to everyone today is the
teardown of Apple 20W USB-C power adapter.
This charger firstly appeared as a standard accessory for iPad 8th generation.
But it still has to wait for the release of the iPhone 12 series, and then it caught the people’s attention.
Cause Apple cancelled the charger inside the box,
so the customer has to buy this 20W charger additionally.
And of course, the price of Apple accessories has always been very stable.
The price has not changed since it was released.
It has always been $19.
And we bought this Apple’s 20W charger from Apple’s official website.
Let’s take a look at the packaging firstly.
We can see that what’s inside the box at a glance.
The charger power is printed in multiple languages on the back.
The specification is on the side label.
OK, let’s unbox it.
Except for the charger inside the box Just a manual.
There is a protective film covering the charger to prevent surface from scratches.
The appearance of Apple’s 20W PD charger is pure white, very simple
And it adopts the fixed pins, not foldable.
Let’s see the specification here.
The manufacturer is Salcom Technology.
It supports the wide input voltage of 100-240V and can be used worldwide.
The maximum rated current is 0.5A.
For output, it has two PDOs of 5V3A and 9V2.22A.
Model is A2244.
There is also a serial number here, printed on the shell and burned into the chip.
The USB-C port is in the middle, and the plastic insertion is also white.
Let’s take a look at the size,
which is about 41.4*42.4*27.3mm (1.63*1.67*1.07 inches).
The weight is about 58g (2.05 oz).
Let me show you the whole Apple charger family.
Apple 18W,
20W,
29W,
30W,
61W,
87W,
96W power adapter.
Apple’s 20W charger is exactly the same as the 18W in appearance.
We have torn down the 96W, and you can check that in the right corner.
And except for today’s 20W charger, It’ll bring the teardown of Apple 30W very soon.
If you wanna see it, you can subscribe to our channel and turn on the Remind button.
Let’s test the performance of the charger.
We can see the serial number via ChargerLAB POWER-Z MF001.
Same as what printed here.
Continue to use ChargerLAB POWER-Z KT002 to test the supporting protocol.
Only Samsung 5V/2A, DCP and USB PD2.0 can be supported.
And it has two fixed PDOs of 5V3A and 9V2.22A.
Use the ChargerLAB POWER-Z KM001C to test the charging power.
8.88V, 2.18A.
So, the power is about 19.4W with PD protocol.
OK, after unboxing and testing, let’s start to tear it down.
We have said in the teardown video of 96W
that the apple’s power adapter is very difficult to take apart.
So let’s directly call our cutting machine to save time.
OK, the internal PCB module has been successfully taken out.
We find that the elastic plates of the charger can connect to the gold finger of the PCB.
There is a black rubber pad in here, used to isolate the pins from the transformer.
The shell of the charger is part of the USB-C receptacle port, which is more stable.
Then let’s see the PCB module.
You can see many components on the front of the PCB,
such as inductors, capacitors, and transformers.
And they’re supported and isolated by plastic.
There are fewer SMD components on the back of the PCB.
We can see the clear boundary between the primary and secondary circuit.
There are a PD fast charge protocol chip and a VBUS switch on the secondary side.
There are multiple holes on the board, used to fix the plastic frame on the front.
This product adopts switching power supply to output wide-range voltage.
And then use the protocol chip of secondary circuit to control the output voltage.
That’s to say, the alternating current comes in from the AC pins and is filtered by common mode chock.
After that, it’ll be rectified by rectifier and filtered by high-voltage electrolytic capacitor.
And then, the master control chip controls the transformer to step down.
And then, rectifying and filtering again.
Finally, the output is controlled by protocol chip.
Next, remove those components on the front.
Firstly remove this common mode chock, used to filter EMI interference
You can see that there is an input fuse here.
Specification is 1.25A 250V
The high-voltage electrolytic capacitor is next to it,
which comes from Nichicon.
Specification is 400V 15μF.
Here is another high-voltage electrolytic capacitor, which comes from Nippon Chemical.
Specification is also 400V 15μF.
Continue to remove two high-voltage electrolytic capacitors.
We can find a color ring inductor under the capacitor.
Continue to remove the transformer and the plastic frame.
The specification is 560μF 12V.
The solid capacitor for output filtering is wrapped in tape for insulation.
And then, let’s see what’s on the motherboard.
This is the master control chip, which has built-in primary controller, MOSFET and secondary
synchronous rectifier controller.
It is customized by Apple from PI.
Model is ZN1461C.
A synchronous rectifier MOSFET is next to it, which comes from DIODES.
And let’s turn to the back of the PCB.
The protocol chip comes from Infineon.
Model is CYPD2134.
The VBUS switch tube of output comes from ON Semiconductor.
Withstand voltage is 30V.
Well, that would be all components of this charger.
We have to say, The quality of Apple’s power adapter is pretty good.
It has master control chip from PI, and its protocol chip comes from Infineon.
Rest of the capacitors are all from Japanese brands.
But there are still some disadvantages in terms of protocol.
It only supports USB PD2.0 protocol.
Even the Apple 2.4A has been blocked.
So, what do you think of this $19 charger?
Will you buy it for your new iPhone?
You can leave your comments below.
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See you next time.