Hello guys, and welcome back to our channel.
ChargerLAB has gotten an Apple 12W USB-A Charger,
which is the only Apple charger supporting the 5V2.4A protocol.
Let's take it apart.
The front of the packaging is printed with the Apple logo,
the product name and the picture.
In the back, you can see the usage, the CE mark and product names in several languages.
The parameter is on the side.
The packaging includes the charger and manual.
The charger has a classic square design, with a white PC casing and rounded edges.
It is equipped with the foldable prongs.
The removable plug makes it easy for users to change
to meet different needs.
The metal "button" can be connected to the ground wire.
The gray shell of the plug is printed with the 2.5A 250V
and the manufacturer name.
The USB-A port is white.
The size is about 46 X 46 X 28 mm (1.81 X 1.81 X 1.1 inches).
The weight is about 66g (2.32oz).
The ChargerLAB POWER-Z KT002 finds that the
USB-A port supports Apple 2.4A protocol.
Ok, let's see what's inside.
First, take apart the shell and take out the PCBA module.
As you can see, the isolation plate used for insulation
corresponds to where the USB-A receptacle is.
The metal "button" that solders wire is for grounding.
The primary filter capacitor and transformer are wrapped with insulation tape,
and a plastic sheet is inserted between the USB-A receptacle and the transformer
to strengthen the insulation.
The AC input receptacle stampings a fixed metal piece
and solders the wire to the PCBA module.
The input wire and cold-pressed terminal are covered with the heat shrink tube
and soldered to the PCBA module.
The transformer is insulated by tape and fixed with adhesive.
The PCB slotting and isolation board
insulate the primary circuit from the secondary circuit.
Then, let's analyze the componets one by one.
The fuse resistor is externally wrapped with black tape
for insulation and overcurrent protection.
The common mode choke from Sumida
is surrounded by a magnet ring and wrapped with external insulation tape.
Two high-voltage filter capacitors from Nippon Chemi-Con,
are for the primary filter and support 400V 12μF.
This is the differential mode choke between the two capacitors,
whose pin is covered by an insulation tube.
The primary master control chip marked with 601A is in QFN package.
The primary switch transistor is from Infineon IPS80R1K4P7,
marked with 80R1K4P7, belonging to the CoolMOS P7 series.
It is an NMOS with the withstand voltage of 800V,
resistor of 1.4Ω and package of IPAK SL, namely the TO-251.
The Sumida OEM transformer's date code is 2143.
Two Y capacitors are stacked together.
And one of them is insulated with heat shrink tube on its pins.
The L217 SMD optocoupler is for output voltage feedback.
The synchronous rectifier from Onsemi, marked with 658L,
is an NMOS with a withstand voltage of 60V, resistor of 5mΩ and the WDFN8 package.
The DCM-mode synchronous rectifier controller from Onsemi FAN6240, marked with ACD,
supports the maximum operating frequency of 200kHz.
The output solid filter capacitor is 1200μF 6.3V.
The serial number of the charger is on the inside of the USB-A receptacle.
Well, that's all for the teardown of the Apple 12W USB-A charger A2167.
Even this charger used a synchronous rectifier back in the day,
it was still not popular.
It supports 5V2.4A and can reach the maximum output power of the charger
when charging for the devieces with a Lightning cable.
To be honest, it's not bad.
OK, that's all for today's video.
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I'll catch you guys in the next video.
Bye.