Apple launched a new upgraded MacBook Pro2021 at the recent new product launch, which is divided into 14-inch and 16-inch specifications. At the same time, Apple also specially developed two sets of brand-new power supplies for it, of which the 16-inch MacBook Pro comes standard with 140W Gallium nitride fast charging source, this is also the first show of incoming gallium nitride fast charging; 14-inch MacBook Pro comes standard with a 67W USB PD fast charging charger.
According to statistics, Apple has three types of chargers based on the USB-A port, 5W, 10W, and 12W, as well as a variety of USB PD fast-charge chargers such as 18W, 20W, 29W, 30W, 61W, 87W, and 96W. In terms of power, the 67W charger is not much improved compared to 61W, and there are 87W and 96W chargers on the top. Whether the new 67W charger will become a replacement for 61W is still unknown.
Through this table compiled by the charging head network, everyone can basically grasp the development history of the Apple USB PD fast charge charger family. At present, the Apple PD fast charge has covered the power range of 18W to 140W, and it is directly upgraded from the original USB PD2.0 fast charge to the USB PD3.1 fast charge.
Today’s article is mainly to share with you the disassembly of Apple’s latest 67W PD fast charging charger, let’s take a look at this new power supplyAccessoriesThe workmanship and materials.
1. Appearance of Apple’s original 67W PD fast charge charger
The packaging maintains the Apple family tradition. The front of the white case is printed with the appearance of the charger, and the upper left corner is the Apple logo and USB-C 67W Power Adapter.
A look at the back of the box.
The power plug is included in the package, and the side suggestion: match with 13-inch and 14-inchMacBookPro use.
The product model A2518 and input and output parameters are printed on the sticker on the other side.
In addition to the charger, the box also contains three instruction manuals.
The charger is a white shiny shell with a square shape, the input end is a foldable pin, and the design is detachable.
The edges and corners of the charger are designed with a smooth transition, and the pins are supported by double wings on both sides, which makes it more stable when plugged into the socket.
Single-port USB-C design on the output end.
Detailed specifications are printed on the side of the pin. 67W USB-C charger, model: A2518, manufacturer: Lite-On Technology Co., Ltd.
The other side is detailed parameter information, input: 100-240V~50/60Hz 1.65A; output: 5.2V3A, 9V3A, 15V3A, 20.3V3.3A, the charger has passed CCC, KC certification.
Compared with Apple’s 61W charger, the volume of the two is exactly the same.
In the hand, compared with other brand chargers of the same power, it can not be said to be very small.
The measured length of the charger is about 74.1mm.
The width is also approximately 74.1mm.
The thickness is about 28.6mm.
The net weight of the charger is about 205.5g.
Unplug the plug, you can see that there is a series of numbers inside the charger jack, which is the unique 17-digit serial number of the Apple charger: C06140609BS06NMAG. The serial number is like an ID number. Each Apple charger is unique and has been Burned into the chip, can be read by special test equipment.
Using ChargerLAB POWER-Z MF001 to detect the relevant information of this charger, it shows that its serial number is also C06140609BS06NMAG, which is exactly the same as that on the shell, indicating that this charger is an official original product.
Use ChargerLAB POWER-Z KT002 to detect the USB-C port output protocol, show that it supports Apple 2.4A, Samsung 5V2A, DCP, PD3.0 protocols, and the displayed PD output power is 65W.
Different from Apple’s 140W GaN fast charge, Apple’s 67W charger still uses the USB PD2.0 fast charge protocol, and the PDO message shows that it supports four sets of fixed voltage gears: 5V3A, 9V3A, 15V3A, and 20V3.27A.
2. Disassembly of Apple’s original 67W PD fast charge charger
Cut along the middle seam of the charger shell and take out the internal power module. Open the shell, it can be seen that the internal module is wrapped with copper radiator, and there is a ring tape in the center of the shell. At the same time, glue injection is used between the power module and the shell to play a fixed role.
In addition to the live wire and the neutral wire, a ground wire is additionally connected between the power module and the pin socket.
The USB-C interface of the output end is connected to the motherboard through a flat cable.
The length of the power module is approximately 68.2mm.
The width is about 67.2mm.
The thickness is about 24.7mm.
Continue to separate the power module, the middle is the power main board, the two sides are plastic shells, after assembly, an insulated cavity is formed, and the heat dissipation copper fins are added to the periphery.
The insulating shell is fixed by two supporting columns.
On the front of the power supply mainboard are relatively large plug-in components, including capacitors, transformers, rectifier bridges, etc. The components are filled with black glue, and an L-shaped metal heat sink is also used on the side.
On the back of the PCB board are SMD components, which are also treated with glue.
Clean up the glue injection between the components. The front side can be divided into three parts. The upper part is the input rectification filter, the middle part is the transformer, and the lower part is the output filter and protocol identification part.
The back of the PCB board at a glance. The upper side is the primary side, with a primary chip, two optocouplers in the middle, and a synchronous rectifier controller on the lower left.
The input fuse is covered with a heat-shrinkable tube, and there is a common mode inductance inside the plastic case below, in addition to a large common mode inductance coil and a safety X capacitor.
At the same time, a plug-in rectifier bridge is used to make full use of the three-dimensional space. Inside the heat shrink tube next to the rectifier bridge is a varistor.
On the other side is a primary switch MOS tube. The aforementioned L-shaped metal heat sink is fixed to the primary MOS by screws to assist in heat dissipation.
There is a small protocol board on the secondary side.
Remove the fuse.
Close-up of common mode inductor.
Two-stage common mode inductors filter out EMI interference.
Close-up of safety X2 capacitor.
The screen-printed TVR10561M varistor is used to prevent abnormal input surges.
Input rectifier bridge GBL408, using Lite-On’s own products, 4A current, 800V withstand voltage.
The primary electrolytic capacitor comes from Rubycon Ruby, CXW series, special for switching power supply, 5K hours life, specification 400V 150μF.
The two small electrolytic capacitors are from Ruby, the specifications are 50V 22μF and 100V 68μF.
The primary PWM controller, ON Semiconductor NCP1340, is packaged in SOIC-8. This is a highly integrated quasi-resonant flyback controller, suitable for designing high-performance offline power converters. With the integrated active X2 capacitor discharge function, NCP1340 can achieve a no-load power consumption of less than 30mW.
The primary MOS tube comes from Infineon, IPA80R450P7, withstand voltage 800V, conductance resistance 0.45Ω.
There is a label sticker on the side of the transformer.
Two optocouplers for output voltage feedback and protection functions.
Diode used in flyback RCD absorption circuit.
Two Y capacitors are used for output anti-interference.
Another Y capacitor.
The secondary synchronous rectifier controller uses ON Semiconductor NCP4305. The chip supports operating frequencies up to 1 MHz, provides high-current gate drivers and high-speed logic circuits, used to provide synchronous rectifier MOSFETs with appropriate timing drive signals. It is suitable for most mainstream topologies such as Flyback, LLC, Forward, and multiple working modes such as QR, DCM, CCM, etc. It provides powerful 8A/4A drain/source drive capability, shorter turn-on delay and early turn-off, Moreover, the turn-on and turn-off thresholds are adjustable, which effectively improves the energy efficiency of the system.
The corresponding position on the back is aToshibaSynchronous rectifier MOS tube, model TPH4R10ANL, 100V, 3.3mΩ conduction resistance.
There is a solid filter capacitor at the output end with a specification of 390μF 25V.
Another electrolytic capacitor from TAICON Taiwan capacitance.
The specification is 25V 820μF.
The protocol board on the secondary side has a protocol chip on it.
The protocol chip comes from Infineon, the model is CYPD3135, which belongs to the CCG3 series and is responsible for USB PD communication. This is also a model customized for Apple.
There is a hexagonal chip on the protocol board.
The output terminal is equipped with a VBUS switch tube, ON Semiconductor NTMFS4C022N, with ultra-low conduction resistance, which helps to improve the energy efficiency of the charger.
A close-up of the USB-C interface.
The dismantling of the Apple 67W charger is complete.
Summary of charging head network
If you have seen the disassembly of the new Apple original 61W charger before, you will obviously feel that Apple’s 67W charger has almost no upgrades and updates in terms of appearance size, internal circuit layout, and components. It is unavoidable that people think that in the original 61W solution, only the firmware of the protocol chip is updated to enable it to output 3.3A current at a voltage of 20V. After all, the margin of the Apple charger has always been sufficient.
The charger uses a full set of ON Semiconductor controllers, the primary power devices are from Infineon, and the synchronous rectifier MOS is provided by Toshiba. The protocol chip remains unchanged from Infineon’s CYPD3135. The output only supports the PD2.0 protocol, and the internal capacitors are also They are all Japanese and Taiwanese brands, and the overall materials used are quite solid. However, judging from the disassembly of the product, the 67W is not so much a new product, but rather it is an iterative product of the 61W charger.