OPPO's VOOC flash charging once led the trend of a generation of domestic fast charging as a representative of low-voltage fast charging. With the development of the market, people have put forward higher requirements for fast charging power, and SUPER VOOC super flash charging came into being.
Compared with VOOC flash charging, SUPER VOOC super flash charging increases the power of 5V/4A and 20W to 10V/5A and 50W, once again occupying the top of fast charging technology. What this issue brings you is the disassembly of the OPPO SUPER VOOC super flash charger VCA5JACH.
1. OPPO SUPER VOOC Super Flash Charger Appearance
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back is product parameter information:
OPPO Super flash charging power adapter
Model: VCA5JACH
Input: 100V-240V~50/60Hz 1.5A
Output: 5V/2A or 10V/5A MAX
Subscriber: Huizhou Jinhu Industrial Development Co., Ltd.
Subscriber: OPPO Guangdong Mobile Communications Co., Ltd.
OPPO All series power adapter packaging boxes have a highly consistent style.
charger has a white shell and is shiny with a piano lacquer, which looks very shiny. Equipped with a medium-gadge power plug, non-folding design, the overall shape of the charger is rounded, and the front is printed with eye-catching SUPER VOOC.
From left to right, there is a 50W SUPER VOOC super flash charger, a new VOOC flash charger, an old VOOC flash charger, and a 50W SUPER VOOC super flash charger. Judging from the figure, the volume of the SUPER VOOC super flash charger is not much different from that of the conventional VOOC flash charger, and it is almost difficult to detect if you don’t put it together.
SUPER VOOC Super Flash Charging still uses USB-A socket output, but the interface glue core has been changed to orange to make the difference. The oval shell area where the
power plug is located is light gray, the shape is the same as VC54JBCH, and is also manufactured by Huizhou Jinhu Industrial Development Co., Ltd., with the CCC safety certification mark and CN product serial number.
2. OPPO SUPER VOOC super flash charger disassembles
ultrasonic welding process shell, open without loss.
original layout is basically the same as OPPO's new 20W VOOC flash charger, but due to the increase in power, the volume of the internal components has also increased. The large component gap is filled with a lot of white thermally conductive silicone to strengthen fixation and assist in heat dissipation.
There is a thin sponge sheet corresponding to the high-voltage electrolytic capacitor position on the inner side of this half shell, which can be used for shock absorption and can also be used to absorb leaked electrolyte when the capacitor explodes unexpectedly.
shell material is flame retardant PC engineering plastic.
Clean out the thermally conductive silicone.
AC power input end uses a thicker red and black silicone soft wire, which is riveted and connected to the pins, and is fixed with silicone, which is firm and reliable. The input terminal of
is a delay fuse and surge suppression resistor between the two wires.
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Two Y capacitors, two large electrolytic capacitors, synchronous rectifier tubes and X capacitors.
The yellow X2 safety capacitor on the left side of the picture above is 0.1μF and 275V. The green original wrapped in black heat shrink tube is a thermistor, which is used to suppress the surge impact current during power-on.
U4K10, 4A, 1000V rectifier bridge. The two brown 105° high-voltage filter capacitors are the well-known domestic brand AiSHi.
specifications are 400V, 33μF*2.
Two blue CY anti-interference capacitors are connected in series, which can improve the voltage withstand level.
USB-A interface adopts a dust cover design with a QR code printed on it.
brown and red slow melting insurance, specifications are 2.5A and 250V.
RC resistor capacitance network around the transformer, used for peak power absorption.
switch transformer uses RM type core , and its load-bearing power and shielding effect are better than the common E-type core. The transformer output line uses multi-layer insulated wire to ensure safe use.Two 680μF 16V solid-state capacitors at the output end of
have good performance and long life.
VOOC fast charging control chip RK825B is commonly used in OPPO flash charging. The producer is Fuzhou Ruixin Microelectronics Co., Ltd., which is responsible for connecting with the mobile phone to adjust the output voltage, protection and feedback functions.
Let’s take a look at the other side of PCBA. A larger PBT engineering plastic and aluminum composite heat sink.
heat sink board uses a large amount of thermally conductive silicone to stick it on the power main control chip . There is a raised insulating isolation sheet on the heat sink. It is inserted into the hollow groove of the PCBA to enhance the high and low pressure isolation.
Clean off the back of the PCBA after the thermally conductive silicone. The main control chip of
power supply is SC1738C specially customized by PI (Power Integrations). The information has not been disclosed yet and can be understood as a high-power version of INN2005K.
One field effect tube is AON6220, N-MOS 100V 48A, used for synchronous rectification, and the lower left corner parallel Schottky diode is used to improve light load efficiency and reduce no-load loss.
AON6220 information.
TPCA8091, Toshiba MOSFET, for output protection.
auxiliary circuit. Together with the above-mentioned MOSFET driver and MOS tube, a multi-protection circuit is formed as a peripheral original of the VOOC fast charging control chip RK825.
USB-A output socket.
From the aforementioned circuit composition, it can be clearly seen that SUPER VOOC super flash charging is directly evolved from VOOC flash charging. The voltage is increased from 5V to 10V, the current is increased from 4A to 5A, and the output power doubles, but the current increase is 25%, which brings little pressure to the USB-A output socket. The USB-A output socket on the SUPER VOOC super flash charging is indistinguishable from VOOC flash charging except for the color of the tongue.
The same fast charging recognition contacts, but the mobile phone and data cable are also compatible with SUPER VOOC super flash charging mode to output a maximum power of 50W. SUPER VOOC super flash charging is backward compatible with VOOC flash charging and normal 5V and 2A modes.
disassembles the family portrait.
Charging Head Network Summary
OPPO 50W SUPER VOOC Super Flash Charging Charger uses the SC1738C (similar to the high-voltage and high-current upgraded version of INN2005K) solution, and enhances independent auxiliary heat dissipation and other measures. In conjunction with the customized VOOC flash charging control chip RK825, it provides multiple security guarantees.
Although the voltage has doubled on the surface, unlike other high-voltage fast charging protocols, OPPO uses dual-cell series, voltage-dividing and current stabilization technology on the mobile phone. In essence, it is like VOOC flash charging, which is a low-voltage and high-current fast charging. While ensuring safety, the voltage and current carried by each battery cell does not exceed 5V/5A, achieving exponential improvement in charging efficiency under high power. At the same time, OPPO specially designed an independent step-down chip. Through the reverse application of charge pump technology, the dual-cell battery can accurately control the voltage and current during operation and ensure stable output.
has a more powerful SUPER VOOC super flash charging technology, which can charge the phone to 40% of its battery in 10 minutes, truly achieving 5 minutes of charging and 5 hours of call.
