Together with the new machine, two 27W wireless chargers were released for daily and on-board use. Today we are going to bring you a report on the disassembly of Huawei Ultra Fast Charging Wireless Charger for everyday use.
I. Huawei 27W Super Fast Charging Wireless Charger Open Box
The products are packed in white rectangular cartons with hanging holes on the top for easy retail display. On the front is a physical picture, with the product name and Huawei's logo on the top.
Product name: Huawei Super Fast charging Wireless Charger (Max 27W). The product selling point is printed on the bottom of the package: 27W maximum power, German T ü V safe fast charge certification, Qi protocol compatible.
The back side is the product specification parameters.
Features: Wireless Huawei Super Fast Charging Technology, Multiple Security Protection, Qi Wireless Charging Standard Protocol Compatibility, With-and-Play Charging, Three Charging Heat Dissipation Design, Lightweight and Portable.
Input interface: USB Type-C;
Input range: 5V-10V, 4A (Max);
Output power: 27W (Max);
Wireless charging protocol: WPC Qi protocol;
Product model: CP61;
At the bottom of the product is the Qi certification, German T ü V safety fast charge certification and other certification marks.
At the bottom are anti-counterfeiting labels and product barcodes.
Open the package. There is a white inner box inside.
Packing Contents: Huawei Super Fast Charging Wireless Charger, 5A Data Line (USB-A to USB-C), Instructions and Three Packs of Vouchers.
The whole product adopts simple design style, delicate and compact, cross silicone anti-skid design. Surface knitting technology realizes the balance between air permeability and light transmittance.
The back center is marked with the brief specifications and parameters of the product, surrounded by a ring of anti-slip silicone pads.
The whole body is bowl-shaped, and the walls are covered with heat sinks. The product adopts independent C-type three-dimensional duct design and has stronger heat dissipation capacity. The official website declares that the heat dissipation capacity has been increased by 30%. Built-in Intelligent SilenceFanIntelligently switching the super silent mode at night, accompanying you to sleep.
The LED indicator is on one side.
The input interface is located on the opposite side, and the type is positive or negative pluggable USB-C.
The interface adopts embedded design, and the charging line looks more beautiful.
Dimensions: The diameter of the product is 90 mm. Because of the built-in fan, the thickness of the product is about 3/4 of the diameter of a dollar coin, reaching 20.85 mm.
Officials say products support Huawei Mate30 seriesMobile phoneMobile phones supporting wireless charging, such as Mate20 Pro, P30 Pro, etc. Compared with the previous generation of 15W wireless charger, the charging power of this generation of 27W high-power wireless super fast charging increases by 80%, and the wireless charging speed is faster than wired charging. In order to verify the performance, the next step is to test Huawei's past wireless chargers: Huawei Mate30 series, Huawei P30 Pro, Huawei Mate20 Pro.
Test conditions: using Huawei 40W charger (Huawei Mate 30 series standard charger) as input, using ChargerLAB POWER-Z KT001 to monitor the input terminal, Huawei original 5A data line as power line to connect Huawei 27W wireless charger.
After Huawei Mate30 is placed on the wireless charger, the screen displays multiple lightning icons and current power. A line of striking "wireless super fast charging" appears below, indicating that 27W super wireless charging is under way.
At this time, the input power is about 34.1W (9.9V3.5A). After efficiency conversion, the final wireless charging power can indeed reach the level of Hua27W super wireless fast charging.
After Huawei's P30 Pro was put on, two lightning icons and current power were displayed on the screen, indicating that wireless fast charging was under way.
At this time, the input power is about 12.8W (8.9V1.4A). After efficiency conversion, the final wireless charging power reaches Huawei 10W wireless fast charging standard.
After putting on Huawei Mate20 Pro, the screen also shows two lightning icons and current power, indicating that wireless fast charging is under way.
At this time, the input power is about 12.7W (8.9V1.4A). After efficiency conversion, the final wireless charging power reaches Huawei 10W wireless fast charging standard.
Finally, look at the compatibility of other wireless charging mobile phones besides Huawei.
It also supports samsung wireless fast charging, testing samsung s10 phones, with a screen showing "charging is accelerating wirelessly."
The product supports Apple 7.5W wireless fast charging.The iPhoneThe mobile phone can be charged wirelessly when it is put on.
2. Disassembly of Huawei 27W Super Fast Charging Wireless Charger
Remove the top cover of the adhesive and open a circle of vents corresponding to the position of the silica gel anti-skid support inside the top cover. Under the vents are wireless charging coils. The vents correspond to the openings on the diaphragm for inhaling air.
HUAWEI logo is printed inside the shell.
Unscrew the screw and remove the wireless charging coil. Below is a centrifugal fan with dense blades. It sucks air through the opening of the magnetic separator to take away the heat generated by wireless charging.
Remove the internal circuit board, frame fan, etc.
Wireless charging coils and circuit boards, circuit boards are still familiar with edge hole technology, used to block electromagnetic radiation.
On the back of the circuit board is a cooling fan, which is connected to the circuit board through a plug.
Wireless charging part, fan and internal bracket.
Compare the size with a dollar coin.
Four-wire temperature-controlled fan with factory name on it, Hongying Dongguan, 5V0.4A power supply.
This fan blade is made in a fine, light and thin process similar to that of eagle-wing fan.
There is a circle of shade outside the indicator lamp.
Next, look at the back of the circuit board. The circuit board has a hollow piece and a MPC-CBB resonant capacitor is placed.
0.25 uF 250V, J class, capacitor with glue reinforcement up and down, PCB edge with a hole connected.
The front of PCB has two larger tantalum capacitors, boost alloy inductors and two control chips.
Input sinking board USB Type-C socket, sinking board through-hole welding, socket back is a TVS for input overvoltage protection, data foot also has TVS for protection.
White LED light on the side of the board.
4R7 boost inductor, white 010 in lower left corner is current sampling resistance.
10 mu F25V Ta capacitor withstanding voltage, used for input filtering, 19 years 34 weeks of production.
South core SC8201A synchronous rectifier boost controller, with the main control to adjust the voltage on the wireless charging power level, built-in MOS driver and multiple protection functions.
Details of Nanxin SC8201A.
Anshi Semiconductor Nexperia PSMN4R2-30MLD, NMOS, two of which are used for synchronous rectification and boost.
Details of ASE Semiconductor PSMN4R2-30MLD.
Four PSMN4R2-30MLDs are also used in the wireless charging power level to form H bridge for wireless charging coil drive.
Echo Semiconductor CPS7101 is an efficient and Qi-compliant SOC chip for magnetic induction wireless charging transmitter. It integrates power supply controller, microcontroller, regulator, foreign body detection (FOD), full bridge driver and on-chip voltage and current demodulation functions. The chip is designed for wide input voltage range from 4.5V to 26V.
CPS7101 integrates a full bridge driver and two PWM modules. Internal protection function can provide overcurrent and overheat protection.
The figure shows a 40.000MHz passive crystal oscillator, which provides a clock for the easy-to-impact semiconductor CPS7101.
A conductive cloth for shielding earthing.
The filter capacitor of synchronous rectification and step-down output, and the tantalum capacitor of 33 mu F25V.
Dismantle the family photo.
3. Summary of Dismantling Charging Head Network
Huawei 27W Super Fast Charging Wireless Charger has a unique internal design. It has a fan built in. It can take air from the wireless charging coil and blow out the centrifugal fan. The air circulation takes away the heat of wireless charging of mobile phones, reduces the temperature rise of mobile phones and chargers, and improves the experience.
Charger circuit boards continue Huawei's excellent style. PCB edges are blocked by electromagnetic radiation through holes, high-quality components are used to ensure the product experience. The built-in South Core Synchronized Voltage Reduction Controller is used to boost the voltage, and the easy-to-impact semiconductor is integrated into the main control. It is equipped with OS tube of Anshi Semiconductor, high-voltage output, and the charge pump inside the mobile phone to achieve a higher power without voltage. Line charging.
It can be seen that more well-known domestic chip manufacturers began to enter the supply chain of Huawei, becoming the main supplier. Among them, Anshi Semiconductor has appeared in the old Huawei wireless charging products before. Echo Semiconductor and Nanxin are the first to enter the supply chain of Huawei wireless charging products series. I believe they will appear in the products after Huawei.