Preface
The charging head network got a 50W vertical wireless charger launched by vivo2, this charger uses a white shell and a simple body design. Wireless charging has built-in adaptive lifting and cooling and air cooling, which is suitable for charging a variety of mobile phones. The bottom of the wireless charger is equipped with an air intake grille, and it is equipped with rubber feet to prevent slipping.
The wireless charger is equipped with a USB-C interface, supports 5-20V 7.3A input, and is compatible with a variety of chargers. The wireless charger is a 60° tilt vertical design, which supports vertical and horizontal placement for easy use. Let's bring the disassembly of vivo's vertical wireless charger 2, and take a look at the internal materials and design.
vivo 50W Vertical Wireless Charger 2 Appearance
The packaging box has a simple design style with a pure white background, and the appearance of the wireless charger, the product name and two major features are printed on the front: adaptive lifting charging and 50W wireless super flash charging.
The design of the cover of the packaging box is printed with the description of the four major characteristics of the product and the parameter information at the bottom.
The package contains the vivo Vertical Wireless Charger2 and the corresponding instruction manual.
vivo 50W Vertical Wireless Charger 2 has a pure white minimalist design style, the shell is integrally formed, and the 60° angle structure between the support plate and the base creates an inclined plane so that the phone will not turn out, and at the same time gives users a very comfortable experience angle for swiping videos and messages.
The front of the support plate is printed with the words "FlashCharge 50W", and the black oval-like area in the middle has a device sensing function, and there is also a mobile phone support platform and indicator light underneath.
Close-up of the sensing area.
The support plate has two major design points, one is the concave design on the front to achieve convex on both sides, so that the mobile phone will naturally form an air duct, and the built-in fan can achieve active heat dissipation;
The support platform is equipped with a rubber protective pad, and at the same time, it is designed with multiple grooves, which can effectively prevent the mobile phone from slipping. In addition, there is an air outlet on the side, which takes away the heat generated during wireless charging of the mobile phone by blowing the air, so as to achieve continuous and efficient wireless charging.
Close-up of the indicator at the bottom of the front, showing a cyan blue light effect when charging the device.
The USB-C power supply port is equipped on the rear of the base, which has good adaptability, and users do not need to deliberately choose a charger to supply power.
There is a grille air inlet window in the center area of the bottom of the base, and a built-in fan in the same area for active heat dissipation, which reduces the impact of temperature on wireless charging to a certain extent.
The bottom shell is also printed with product parameter information, model CH2351, support 5-20V7.3A (Max) input, the manufacturer is Vivo Mobile Communications Co., Ltd.
In addition, there are anti-slip mats at the four ends of the bottom, which can effectively prevent the product from sliding and improve the use experience.
The measured length of the base of the vivo 50W wireless charger 2 is about 10.5cm.
The width is about 6.5cm.
The height is about 11.3cm.
The size of the product in the hand is intuitively felt.
In addition, the net weight of the vivo 50W wireless charger2 is about 225g.
Using the original 120W charging kit of the vivo X100 Pro mobile phone to power the vivo 50W vertical wireless charger2, and placing the vivo X100 Pro on the wireless charger for charging, the output power of the charger end is measured to be about 19.92V 2.75A 54.86W.
For wireless charging of the iQOO 12 Pro mobile phone, the measured output power of the charger is about 17.72V 2.8A 49.62W.
vivo 50W立式无线充电器2拆解
After reading the appearance and test of this wireless charger, let's disassemble it and take a look at the internal design and materials.
First, remove the rubber gasket on the bottom of the wireless charger and unscrew the set screws to open the back cover.
The wireless charger has a black plastic bracket inside.
Inside the base is a cooling fan and a solid-state capacitor that filters the solid-state capacitors.
Pry open the wireless charging coil cover from the side and secure it with clips and glue.
Inside the cover panel there is a light-blocking area for the indicator light and an infrared distance sensor area.
The light guide strip of the indicator light is shaded by foam.
Close-up of two wireless charging coils inside, with thermistors to sense temperature.
The cooling fan is secured by screws.
The air outlet of the cooling fan corresponds to the wireless charging pad, blowing air out to dissipate heat for the phone.
Unscrew the set screws and remove the cooling fan.
The cooling fan is connected by wires and connectors.
The indicators are also connected by wires and connectors.
Unscrew the fan set screws and remove the fan and black plastic bezel.
The PCBA module is fixed inside the housing using screws.
Close-up of Phillips set screws.
On the side of the PCBA module, there are connectors for indicator lights, motors, potentiometers, and cooling fans.
Unscrew the set screws and proceed with disassembly.
The potentiometer connection wire and the motor wire are secured by adhesive tape.
The wireless charging coil is fixed inside the plastic frame.
The plastic frame is fastened by screws.
Disconnect the connector, unscrew the fixing screws, and remove the PCBA module and wireless charging coil from the housing.
The PCBA module and the wireless charging coil are connected by a cable arrangement.
The cables are connected by soldering and plugging parts.
Separate the connection between the wireless charging coil and the PCBA module.
The front of the PCBA module is equipped with a large area shielding cover.
Copper foil is pasted at the position of the alloy inductor.
Tear off the copper foil, and glue around the inductor to strengthen heat dissipation.
Remove the shield, and there is a wireless charging circuit, a main control MCU and a step-down circuit inside.
A glance at the front of the PCBA module, the wireless main control chip is soldered in the middle position, and the main control MCU is in the upper left. In the upper right corner is the step-down circuit, which supplies power to the wireless charging master control chip and the master control MCU. The lower right corner is the boost inductor and MOS tube. The four MOS tubes on the left side are used for wireless charging coil switching, and the lower four MOS tubes are used for wireless charging coil driving.
The back of the PCBA module is welded with filter capacitors and farad capacitors, and the farad capacitors are glued and reinforced.
The USB-C receptacle is fixed by via soldering, and the black rubber core does not expose copper.
The input TVS is used for overvoltage protection.
The input filter capacitor is from Fengbin, PM series solid capacitor, the specification is 100μF35V.
The wireless charging main control chip comes from Yichong Semiconductor, model CPS8200, is a highly integrated and high-efficiency wireless charging transmitter chip, the chip integrates a 32-bit processor, built-in 64+2KB MTP, 32KB ROM and 2KB SRAM, of which MTP supports read/write protection, and supports programming through CC pin and DPDN data line. The chip has two I2C interfaces and has two UART interfaces.
CPS8200 Support QC2.0/QC3.0/PD3.1/SCP/AFC fast charging, integrated three-to-half bridge driver, support boost or buck conversion, support fixed-frequency voltage regulation charging, and only need to match the corresponding MOS tube to achieve a complete Qi2 wireless charger finished product.
CPS8200 supports 24V supply voltage, 45V supply voltage in the power stage, integrated overvoltage, overcurrent and overtemperature protection functions, internal switching buck converter, linear voltage regulator, DC-DC controller, full-bridge driver and communication module, multi-channel 12-bit ADC, and very low standby power consumption.
Easy Rush Semiconductor CPS8200 Profile Information.
The synchronous boost switch is from Weizhao Semiconductor, model VSP003N06MS-G, NMOS, withstand voltage 60V, conduction resistance 2.5mΩ, and is available in a PDFN5*6 package.
Weizhao Semiconductor VSP003N06MS-G Profile Information.
Close-up of 6.8μH boost inductor.
The boost output filter capacitor is from Berry Kai, which is a VA series high-voltage solid-state capacitor with a specification of 68μF 50V, and two are connected in parallel.
According to the dismantling of the charging head network, the products of Berry are widely used in chargers, car chargers, wireless charging, mobile power supplies, energy storage power supplies and other fields, and have been used by Huawei, OPPO, vivo, Xiaomi, Honor, Samsung, Lenovo, Transsion, Zimi, Nubia, Bull, ANKER and other well-known brands, and the products have been highly recognized by the market.
The wireless charging power tube is from Pingwei, model D30N06HSL, NMOS, withstand voltage 60V, conduction resistance 9mΩ, DFN3*3 package, using four H-bridges.
The MOS transistor used for wireless charging coil switching is also from Pingwei, model D80N10ESL, NMOS, withstand voltage 100V, conduction resistance 6mΩ, and DFN5*6 package.
Close-up of three white NPO resonant capacitors connected in parallel.
另一组NPO谐振电容特写。
The wireless charger has a built-in Chipsea CS32F035K6U6 MCU for the whole machine control, the MCU has a built-in 32-bit Cortex-M0 CPU, a maximum operating frequency of 48MHz, a built-in 32KB Flash memory and a 4KB SRAM, with I2C, SPI and USART interfaces, and a built-in 12-bit ADC, which can be used for smart homes, handheld devices, consumer electronics, industrial measurement and GPS devices, etc.
Chipsea Technology CS32F035 Profile.
A buck chip silkscreen ENFMC.
Close-up of 6.8μH buck inductor.
Close-up of a silk-screened 33CH stabilized chip.
Close-up of the motor driver chip of silk-screen 2X0L.
The supercapacitor used to power the motor comes from Jianghai and is an SRM series module with a nominal voltage of 5.5V and a capacity of 0.22F.
Close-up of the four-pin socket used to connect the cooling fan.
Close-up of the socket of the connection position detection potentiometer.
Close-up of the socket connected to drive the wireless charging coil up and down the motor in motion.
Close-up of LED indicator socket.
Close-up of the LED indicator board.
An LED light is welded to a small board.
The cooling fan is from Delta, the model is NS55B08, and the specification is 5V 0.5A.
Close-up of fan blades.
Inside the housing is provided with a black plastic bracket.
The plastic bracket is secured by screws.
Take out the bracket and a close-up of the motor and deceleration mechanism used to drive the position of the wireless charging coil.
Close-up of a slide potentiometer used to detect the position of the coil in motion.
The potentiometer is fixed in a metal case.
The motor reduction mechanism is fixed by screws.
Close-up of the motor gear reducer.
Close-up of slider and screw rod on the other side.
The wireless charging coil is fixed inside the plastic frame.
A glance at the back of the plastic frame.
Take out the wireless charging coil module.
The two wireless charging coils correspond to the horizontal and vertical placement of the mobile phone for wireless charging.
Close-up of a thermistor that detects the temperature of a coil.
Close-up of an infrared distance sensor used to detect the placement of the phone.
The wireless charging coil is wound with yarn-wrapped wire.
The cable is connected to the back of the wireless charging coil.
The thermistor is welded on the left side of the cable, and two wireless charging coils are welded on the right side.
A list of all dismantling and a family photo.
Summary of the dismantling of the charging head network
vivo's vertical wireless charger2 features an ergonomic 60° vertical design that supports both vertical and horizontal placement of the phone for comfortable use. The wireless charger supports 50W wireless charging, and has built-in adaptive lifting and lowering charging, which can accurately adjust the position and improve charging efficiency. The wireless charger has a built-in cooling fan to dissipate the heat generated by wireless charging in a timely manner. It also supports sleep mode for a better user experience.
Through the dismantling of the charging head network, it was learned that vivo's wireless charging uses Yichong semiconductor CPS8200 main control for wireless charging control, with Weizhao MOS tube for input boost, and Pingwei MOS tube for wireless charging drive and coil switching. Inside, Xinhai Technology CS32F035K6U6 MCU is also used for the whole machine control. The wireless charging PCB is equipped with a large-area metal shield, and the coil is equipped with a thermistor to detect the temperature rise, and the workmanship and materials are very reliable.