Since the iPhone 8/ 8 Plus/ X incorporated the USB PD fast charging feature, capturing a lot of attention from mass media; including ours. However, to active fast charging, Apple recommend their customers to buy the Apple fast charging lightening cable and the 29W charger. Same as we have done with previous chargers, we are going to take apart Apple’s 29W charger.
An illustration of the charger is captured on the white package with ‘USB-C 29W’ on the right top corner.
On the back of the package, you can find “29W USB-C Power Adaptor” written in multiple languages.
On one of the sides, there’s a label stating the name of the product, designed in California, made in China, the product model A1540, and serial number C4H716402KXG2VCBH.
After removing the protective film, you will find the manual, a user guide, the charger, and a outlet adapter.
The charger plus the outlet adaptor weights a total of 132grams only.
It retains the classic Apple design with its simplistic structure and rounded corners. The width measures to be 56mm, length is 56mm, and thickness is 28 mm.
It comes with the standard 2-pin plug adapter that users can take off and attach the necessary prongs for their country.
The SN code is printed on the base: C4H71640KXG2VCBH, same as the one printed on the package.
We used the Power-Z KM001 USB PD to inspect this PD charger. On the screen, you can see that this charger supports an output voltage of 5V2.4A and 14.8V2.0A; consistent with the specifications given by the manufacture.
Then, we tested the maximum power with the Power-Z FL001 USB PD. The result: output voltage is 4.91V2.8A with an output power of 13.8W and the input power is 16.3W.
14.8V voltage resulted in a maximum output of 14.76V2.3A, power of 34W, and an input of 36W.
Apple 29W USB-C PD power adapter comes with a sturdy case and protective film; the ground wire is fixed on a T-shape mount.
After removing the case, you can see the structure of the charger.
A piece of thermal copper plane is placed on the adapter with a flexible thermal pad on the copper plan. The entire piece of copper is wrapped with high-temperature insulation tape.
The structure composed of a ground wire system, a wall plug socket, and the main PCB.
The wall plug socket is wrapped with high-temperature insulation tape; the female and male wires are firmly glued.
Varistor S10 K300K1 is used as the primary protection against the low-level repetitive surge currents.
Solteam socket supports up to 250V2.5A
Common mode filter 19387-R 13A1713E
All wires are well welded.
PCB Specifications: STMicroelectronics, Siyin 644BV 7B003 BRD, Siyin BQY, Siyin VE, Siyin 258 4670 1646, SiyinT1IS.
ON Semi NCP4304A+ Infineon BSC077N12NS
Infineon is FLUT12A2010
The top and bottom of the PCB are connected to the copper plane with MOS tube. There is also a nichicon 33uF 35V electrolytic capacitor.
There is a white isolated housing between the PCBs.
Separating the shell and the PCB
Nippon electrolytic capacitors: KXJ 400V56uf
Siyin LT 7B06A KBP208GL Rectifier Bridge
USB-C pin, laser code L073N0JD
The tiny piece next to the USB port is wrapped with high-temperature insulation tape.
Remove the temperature insulation tape, you can see the SiyinY704 715 33.
We know Apple commands a strong consumer loyalty in its customers. It’s fairly common to see Apple consumers with an Apple phone, laptop, watch, tv, etc… They have branded themselves quite well in making people want their products so much that consumers are willing to camp out at their stores for hours or days every time there is a new product launch. After the detailed dissection of the Apple 29W USB PD charger, it’s a good charger choice but is it the best for the price? What do you guys think?