stayOPPOAt the press conference of Reno8,OPPOReleased three new models of Reno8 andOPPOEnco R real wireless headset, andOPPOThe Pad Air tablet is also sold with an 80W SUPERVAC car charger.This car charger has 1A1C dual interfaces, of which the USB-C interface supports 30W PD fast charging, and the USB-A interface supports 80W SUPERVOOC fast charging, which can fully charge the Reno8 Pro8+in about 35 minutes and is compatible with other devices.
Now that the charging head network has obtained this 80W super flash charging vehicle charger, we will test and disassemble it to see how the internal design is and what components from the manufacturers are used.
The front of the packaging box is printed with the appearance drawing of the car charger, Charger and 80W logo.
The product name - super flash charging car charger is printed on the side.
The back is printed with descriptions of the four selling points of the product, and the lower area is also pasted with parameter stickers.
The package contains the car charger and instructions.
The OPPO 80W Super Flash Charge is exquisite in design and beautiful in overall appearance. In addition, it is equipped with ring LED, so the use experience is also very good.
The car charger adopts an integrated plastic shell with bright surface, frosted and color contrast design. The shell is printed with a conspicuous brand and flash charge logo.
The vehicle charging input end and the positive spring piece are of conical design.
The car charging parameters are printed on the bright shell
The other side is printed with SUPERCOOEC, the name of OPPO flash charging protocol.
The concave edge of the top surface of the car charger is equipped with a turbine texture, and the periphery is also equipped with an LED light ring. The two designs are matched to achieve better visual effect after power on.
The top surface is also equipped with 1A1C dual USB interfaces, all of which are black rubber cores.
The front end of USB-A tongue has special contacts, and the interface not only supports 11V/7.3A80W flash chargeIt is also downward compatible with VOOC 2.0 5V/4A, VOOC 4.0 5V/6A and SuperVOOC 10V/6.5A fast charging.
The size of the hand is intuitive.
The net weight is about 43g.
The light ring will be white after power on.
When simulating the 14V DC input, the ChargeLAB POWER-Z KT002 is used to measure that the USB-A interface supports Apple 2.4A, Samsung 5V2A, DCP protocols, as well as QC2.0/3.0, AFC, FCP, VOOC/DASH/WARP, and SuperVOOC fast charging protocols.
It is measured that the USB-C interface supports QC2.0/3.0, AFC, FCP, PD3.0, and PPS fast charging protocols.
In addition, there are four sets of fixed voltage gears: 5V3A, 9V3A, 12V2.5A and 15V2A, and one set of PPS voltage gears: 3.3-11V3A.
When simulating 24V DC input, it is measured that the USB-A interface also supports Apple 2.4A, Samsung 5V2A, DCP protocols, as well as QC2.0/3.0, AFC, FCP, VOOC/DASH/WARP, and SuperVOOC fast charging protocols.
The measured USB-C port compatible protocols are the same, supporting QC2.0/3.0, AFC, FCP, PD3.0, and PPS fast charging protocols.
It also has four fixed voltage gears of 5V3A, 9V3A, 12V2.5A and 15V2A, and one PPS voltage gear of 3.3-11V3A.
The USB-A interface of the car charger supports OPPO 80W SUPERVAC super flash charge. Use this interface to charge the OPPO Find X5 mobile phone. The charging power measured by ChargeLAB POWER-Z KM002C is 8.7V 7.2A 62.63W.
After seeing the unpacking and testing of the car charger, we will disassemble this car charger to see how the internal two way fast charging and internal structure are designed.
Because it is impossible to take out the PCBA inside the car charger after removing the cover plate of the car charger end face, use a cutting machine to cut the shell into three pieces and take out the PCBA module of the car charger.
The interior of the car charger adopts a combined welding design of two PCBs, corresponding to the USB-C interface and the USB-A interface respectively.
The USB-C port is welded on the large area PCB at the bottom, which is a synchronous voltage rise and fall circuit, supporting 12-24V input and 5-15V wide voltage output.
The front of the vehicle charging PCBA module is at a glance. The positive pole is connected to the solid end cap with a gold-plated thimble. The front is welded with the input filter capacitor and step-down inductance.
On the back is four synchronous voltage rise and fall switch tubes and synchronous voltage rise and fall controller, and the pins on both sides are welded to connect the circuit board of USB-A port.
At the side view of the PCBA module, two PCBs are connected to the plastic bracket through the pin, and the step-down inductance is filled with glue for fixation and heat dissipation.
Close up of plastic insulation support.
Weld and open the pin array connected by two PCBs, and disassemble the small boards of USB-C and USB-A interfaces.
The pin for connecting two PCBs is fixed and supported by a plastic bracket.
Through observation of the disassembled PCB of the car charger, OPPO 80W SUPERCOOEC car charger uses two sets of independent circuits, in which USB-A interface uses a step-down circuit, and the Nanxin SC8002 synchronous step-down controller controls the Ansenmey step-down MOS tube,USB-C interface uses synchronous voltage rise and fall circuit, and Nanxin SC8815 synchronous voltage rise and fall controller controls Weizhao MOS tube, and the dual port protocol is controlled by Nanxin SC2021A protocol chip.The following is a detailed disassembly from the input end to show the materials and design of the car charger.
The positive input end of the car charger uses a gold plated thimble, which has lower contact resistance than the spring.A NTC thermistor is welded below the positive thimble for positive temperature detection.
A white chip fuse for input overcurrent protection.
A filter inductor is wound with enameled wire and insulated with heat shrinkable tube for filtering interference.The negative pole spring piece is welded below the inductance and fixed with glue.
The input filtering solid capacitance is 100 μ F 38V.
TVS tube for input overvoltage protection, from Yangjie, model SMF36A, breakdown voltage 40V, is used for input overvoltage protection.
South core SC8815 synchronous voltage rise and fall controller is welded on the back of PCB for synchronous voltage rise and fall voltage conversion control of vehicle charging.Nanxin SC8815 is a two-way synchronous voltage rise and fall controller integrated with I2C interface, which supports 2.5-36V input and output voltage range, and supports battery charging. The battery charging current and voltage, reverse discharge output voltage, and input and output current limit can all be controlled by I2C bus. The chip has undervoltage protection, overvoltage protection, and overcurrent protection,It also supports short circuit protection and overheat shutdown protection.
The four external synchronous switches of SC8815 are from Weizhao Semiconductor, the model is VS3620GEMC, NMOS, the withstand voltage is 30V, the resistance is 4.9m Ω, and they are packaged with PDFN3333. Four H bridges are used to synchronously raise and lower the voltage.The left R005 sampling resistance is used for input current sampling, and the right R010 resistance is used for output current sampling.
Details of Weizhao Semiconductor VS3620GEMC.
Two MLCC capacitors for power supply filtering.
The voltage rise and fall inductance is made of magnetic ring winding, and the bottom is glued for fixation and heat dissipation.
There is an NTC thermistor at the bottom of the inductance, which is used to detect the temperature of the USB-C port voltage rise and drop circuit.
The output filter capacitor of USB-C port is from PolyCap Brilliant, VA series chip solid state capacitor, with the specification of 220 μ F 25V.
Nanxin SC2021A is a highly integrated Type-C/PD and DPDM fast charging controller.Comply with the latest Type-C and PD 3.0 standards.The chip supports a proprietary high-voltage fast charging protocol, including a set of USB-C interfaces and two sets of DPDM interfaces, which are used for dual port fast charging applications of USB-A and USB-C.
Nanxin SC2021A is internally integrated with 32-bit high-performance MCU core, 2.5Kb memory and 32Kb MTP memory, and supports private fast charging protocol.SC2021A minimizes external components by integrating USB PD baseband PHY, Type-C detection, dual DPDM PHY, built-in VBUS discharge path, VCONN power supply, programmable feedback compensation, voltage and current detection, 10 bit ADC, dual 10 bit DACs, NMOS grid driver, I2C interface and protection circuit.
SC2021A supports a variety of protection mechanisms, including overvoltage protection (OVP), undervoltage protection (UVP), overcurrent protection (OCP), short circuit protection (SCP), over temperature protection (OTP), DPDM overvoltage protection, CC overvoltage protection, VCONN overvoltage protection, VCONN overcurrent protection and VCONN short circuit protection, effectively ensuring stable and reliable operation of the system.SC2021A is packaged with QFN 4 * 4-32.With good protocol compatibility and rich control interfaces, it can be used for vehicle charging and fast charging applications.
The output VBUS switch tube of USB-C port is from Weizhao Semiconductor, model VS3508AE, PMOS, withstand voltage 30V, conductivity 8.5m Ω, and is packaged with PDFN3333.
Details of Weizhao Semiconductor VS3508AE.
The outer sleeve of USB-C mother seat shall be spot welded with steel sleeve and through hole welding.The crimping mother seat is more convenient to use, and the welding points are coated with glue for reinforcement.
Close up of USB-A port step-down board, welding step-down magnetic ring inductance and filtering solid capacitor.
The back of the small board is welded with the Nanxin SC8002 synchronous step-down controller, which is used to reduce the input voltage. The output voltage is controlled by the Nanxin SC2021A dual port protocol chip, which is used for 80W fast charging support.The South Core SC8002 supports 36V input voltage, high-precision output current limiting, and dual channel independent current limiting.The SC8002 can be used for car charging, multi port charger, USB HUB and other applications.
The synchronous step-down switch tube is from Ansomy, silk screen 5C460L, the actual model is NVMFS5C460N, NMOS, withstand voltage 40V, conductivity 5.3m Ω, and is sealed with DFN5 * 6.
The magnetic ring step-down inductance is glued for fixation and heat dissipation.
A thermistor is also welded at the bottom of USB-A step-down inductance for temperature detection. Three thermistors are used inside the car charger to detect the temperature of different areas and provide multi-point and all-round overheating protection to ensure safe use.
The filter capacitor of USB-A port is from PolyCap Brilliant, VS series chip solid state capacitor, with the specification of 330 μ F 16V.
The output VBUS switch tube is from Weizhao Semiconductor, model VS3618BE, which is a 30V withstand NMOS tube with a conductivity of 5.2m Ω and is packaged with PDFN3333.
Close up of USB-A female socket, insulated with plastic shell, via hole welding.
Close up of LED indicator used to indicate the power on status on the edge of the vehicle charging PCB.
After all disassembly, let's have a family photo.
Disassembly summary of charging head network
OPPO SUPERCOOEC 80W car charger is made of black polycarbonate shell, which is solid and durable.The annular indicator light equipped at the charging output end can clearly identify the charging position at night, which is convenient for use.The car charger supports 30W USB PD output and 80W SUPERVAC fast charging, which is very compatible with mainstream mobile phone fast charging.
Through disassembly, the charging head network learned that this car charger is composed of two PCB boards welded, which correspond to the voltage rise and fall output of the USB-C port and the voltage drop output of the USB-A port respectively.NTC thermistors are set at the positive input end of the vehicle charge, USB-C and USB-A circuits for temperature detection to turn off the output in case of overheating to ensure safe use.
In the car charger, South Core SC8815 is used in combination with Weizhao MOS tube for USB-C interface voltage rise and drop output, and South Core SC8002 is used in combination with Sammy MOS tube for USB-A interface voltage drop output. The dual port fast charging protocol is controlled by South Core SC2021A.The two output filter capacitors are from Bereker. The positive output is connected to the fuse and TVS for over-current and over-voltage protection. The output interface data pin uses a voltage regulator for over-voltage protection. The workmanship and materials are very good.