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Disassembly Report: Huawei 27W Super Fast Charging Wireless Charger

via:充电头网     time:2019/10/11 2:02:30     readed:988



Together with the new machine, two 27W wireless chargers are available for daily and on-board environments. The charging head network has previously dismantled Huawei's old 15W wireless chargers, and what we want to bring to you today is the disassembly report of Huawei's super fast charging wireless chargers, which are aimed at the daily use environment of Huawei's two new 27W products.

I. Huawei 27W Super Fast Charging Wireless Charger Open Box

The product is packed in white rectangular carton, with hanging holes at the top, which is convenient for retail display. A physical picture is printed on the front, with the product name and Huawei's iconic Logo. at 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 compatible, with charge, three charge heat dissipation design, portable.

Input interface: USB Type-C;

Input range: 5 V ≤ 10 V, 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 and there is a white inner box in it.

Packing Contents: Huawei Super Fast Charging Wireless Charger, 5A Data Line (USB-A to USB-C), Instructions and Three Packs of Vouchers.

The product as a whole adopts simple design style, exquisite and compact, cross silica gel anti-skid design. Surface cloth weaving technology to achieve 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 shape is bowl-shaped, the four walls are full of heat dissipation holes. The product adopts independent C-dimensional air duct design, with stronger heat dissipation capacity, the official website page claims that the heat dissipation capacity increased by 30%. Built-in intelligent muteFanAt night, the intelligent switch supermute mode, accompany you to sleep.

The LED indicator is located on one side.

The input interface is on the opposite side, with a positive and negative pluggable USB-C. of type

The interface adopts embedded design, and the charging line looks more beautiful.

Size: the diameter of the product is 90 mm. Because of the built-in fan, the thickness of the coin is about 3 × 4, up to 20.85 mm.

Officials say products support Huawei Mate30 seriescellphoneMobile 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: Huawei 40W charger (Huawei Mate 30 series standard charger) is used as input, and ChargerLAB POWER-Z KT001 portable tester is used to monitor the input. Huawei original 5A data line is used as power cord 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 terminal power is about 34.1W(9.9V3.5A). After efficiency conversion, the final wireless charging power can reach Huawei's 27W ultra-wireless fast charging level.

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 input power 12.7W or so (8.9V1.4A), after efficiency conversion, the final wireless charging power up to Huawei10W wireless fast charging standard.

Finally, look at the compatibility of other wireless charging mobile phones besides Huawei.

Use the wireless charging aging test fixture to test and display "PPP", that is, support for ordinary 5W,Apple7.5W andSamsung10W.

The product supports Samsung wireless fast charging, tests Samsung Note10 phones, and the screen says "accelerating charging wirelessly."

The product supports Apple 7.5W wireless fast charging.The mobile phone can be charged wirelessly when it is put on.

Second, Huawei 27W super fast charge wireless charger disassembly

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.

The HUAWEI logo is printed in 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 and 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 heat dissipation fan connected to the circuit board through a plug.

Wireless charging part, fan and internal bracket.

The size of the coin is compared to the size of the 1 dollar coin.

Four-wire temperature-controlled fan with factory name on it, Hongying Dongguan, 5V0.4A power supply.

The manufacturing process of this fan is very good, thin and thin, similar to the eagle wing fan process.

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 μ F 250V, J class, the capacitance is strengthened with glue, and the edge of PCB is connected through holes.

The front of PCB has two larger tantalum capacitors, boost alloy inductors and two control chips.

Input sink plate USB Type-C socket, sink plate hole welding, socket behind is a TVS, for input overvoltage protection, the data foot is also protected by TVS.

White LED light on the side of the board.

4R7 boost inductor, white 010 in the lower left corner is the 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, on this side of the two for synchronous rectifier boost.

Details of ASE Semiconductor PSMN4R2-30MLD.

On this side of the wireless charging power stage, four PSMN4R2-30MLD, are also used to form an H bridge, which is used to drive the wireless charging coil.

Echo Semiconductor CPS7101 is an efficient and Qi-compliant SOC main control 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 passive crystal oscillator of 40.000MHz, which provides a clock for easy-to-punch 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.

Tear down the whole family photo.

3. Summary of Dismantling Charging Head Network

Huawei 27W super fast charging wireless charger has a unique internal design, with a fan built in, intake from the part of the wireless charging coil, centrifugal fan blowing out, air flow taking away the heating of wireless charging of mobile phone, reducing the temperature rise of mobile phone and charger, and improving the experience.

The products are manufactured by Lixun Precision OEM, and the circuit board continues Huawei's excellent style. The edge of PCB is blocked by through-hole closure. High-quality components are used to ensure the product experience. The built-in South Core Synchronized Pressure-Reducing Controller is used to boost the voltage and complete integration of Easy-to-Push Semiconductor with the MOS tube of Anshi Semiconductor, high-voltage output and charge pump inside the mobile phone to reduce the voltage. Now higher power wireless charging.

It can be seen that an obvious trend is that more well-known domestic chip manufacturers begin to enter the supply chain of Huawei and become the main supplier.Compared with Huawei's old wireless charging, the list of new suppliers has changed significantly: in terms of main control chips, Yi Chong Semiconductor replaced IDT, in the United States for the first time into the Huawei wireless charging product line supply chain, the strength of which should not be underestimated. Nanxin has previously appeared in Huawei's fast charging product line, this time is also its first appearance in Huawei wireless charging product line. Anshi Semiconductor, on the other hand, stabilized its position and appeared again. I believe that in China for the future of the product line, we will continue to see these domestic leaders.

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