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Disassembly report: Google Pixel Stand Google wireless charger

via:充电头网     time:2018/11/18 0:27:20     readed:1055

First, Google Pixel Stand Google wireless charger opens the box.

Pure white packaging design, printed with product facade on the front, very concise.

The side view of the product is printed on the back of the package.

The pulling and packing design of the heaven and earth cover opens the packaging and reveals the product body. There is also a layer below.parts.

Packing contents include: Google wireless charging base, USB PD charger, USB-C data line (1.5m), instructions.

Google Pixel Stand's wireless charging pedestal follows a simple design style. The pure white body consists of two parts: a track-shaped panel and a circular pedestal.

The angle between the panel and the base is about 60 °and can not be adjusted. Below the base is a wavy plastic baffle for fixing the mobile phone to prevent slippage.

The back of the product is also very simple, and there is an outlet line behind the base.

At the bottom of the product is an orange antiskid rubber pad, and the surrounding area is the main technical parameter. The design of the groove can hide the charging line connector and make it more beautiful visually.

The inner side has a USB-C interface.

The standard adapter also uses a white style consistent with the fuselage, with a USB-C interface. As for the fast charging protocol it supports, our previous open-box text has been tested for validation: support for the USB PD protocol.

Specification parameters: Switched power supply, model: TC G1000-US, input: 100-240V~0.5A, 50-60Hz, output: 5V3.0 A/9V2.0 A, maximum power X, Feihong OEM.

The charger adopts the American Standard two pin flat plug, and it can not be folded.

For the time being, there is no Google Pixel wireless handset.IPhoneXS Max for testing.

Vertical wireless charging is more suitable for both charging and using, such as looking up in office environment to view mobile phone message notification.

ChargerLab POWER-Z KM001C is used to monitor the input terminal. The input power is about 5.7W. After efficiency conversion, charging for the iPhone can only reach the normal 5W wireless charging level.

According to the official page information, this product supports Google 10W wireless charging. In order to verify whether it supports other mainstream wireless charging modes, we use wireless charging fixtures for verification testing. Three power gears only have 5W position lights, showing PFF, which means only the first PASS pass. The other two FAIL authentication failures, that is, support ordinary 5W, not support Apple 7.5W, Samsung 10W wireless charging.

Two, Google Pixel Stand Google wireless charger dismantling

The base is combined in the form of buckle, and can be prized by crowbar.

Open the back cover of the base to show the main parts.

PCB is fixed on the base by screw, and the surface parts are wrapped by two symmetrical metal shielding covers of aluminium shell.

Unscrew the screws.

The metal shield is welded on the front side of the PCB.

The middle of the PCB is equipped with windows, and the coil and temperature probe line is piercing through the middle.

The coil and temperature probe pad are fixed to avoid vibration and disbonding.

Pull the coil and the temperature probe welding point and peel it off.

The panel and the base can be separated at this time.

The coil parts are hidden in the panel.

The panel is also assembled in the form of buckle, prying the panel open and exposing the inner coil.

The panel is made of PF phenolic resin.

The "Lv" type double coil structure can ensure that the phone can be aligned and charged at the same time. There is a temperature probe in the middle of each coil. Under the coil is a large magnetic separator and a fixed metal aluminum plate.

Remove the PCB part from the base panel.

A piece of iron is attached to the back of the PCB, which acts as a fixed and counterweight.

PCB is sandwiched between iron and metal shields.

Remove the iron block, expose the black PCB, screw holes and other positions using gold deposition process, PCB back without any components.

Remove the metal shield and expose the PCB positive components.

PCB close-up. The left and right components are also highly symmetrical.

USB-C stands for the mother seat.

The bottom components are completely symmetrical. Each of them has a set of NPO capacitors. Four of them are in one group, totally eight. The two coils adopt a completely independent transmitting structure.

IDT P9242 highly integrated 15W wireless charging transmitter chip is used to support foreign body detection (FOD) input voltage range of 4.25V-21V, in line with WPC 1.2 standard, built-in overcurrent and overtemperature protection, support programming LED mode.

Next to it is Winbond Huabang W25X40CL memory, 4Mbit, working voltage range 2.3-3.6V, which is used to store IDTP9242 configuration.

IDT IDTP9242 specification.

AOS the US generation AON6996 MOS tube. For input protection, the power supply is filtered through capacitor and common mode inductor respectively.

AO AON6996 details.

There are two AON6996 MOS on each side, four in total, double MOS, and very low in resistance. The bottom is the LED indicator.

Look at the other side.

STMicroelectronics STM32 microcontroller.

Screen printing 9090I, toggle switch, a total of two.

Disassemble the whole family.

Three. Disassembly and summary of charging head net.

Google Pixel Stand Google Wireless Charger uses AON6996 low internal resistance composite MOS, which can effectively improve the conversion efficiency in the process of wireless charging, improve efficiency and reduce fever. The IDT scheme provides the highest compatibility in the application area. The two shields can effectively reduce the radiation interference to the outside world and reflect the style of the factory.

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