Recently, the charging head network got the biazeBiaze An 18W USB PD fast charging charger FC87C, this charger is small and round, easy to carry out, with three sets of fixed voltage gears, maximum support18W PDFast charging output can meet the daily fast charging needs of iPhone 11 users.Now we will disassemble this charger to see how the materials are used inside.
This charger adopts white outer packing box, with simple overall design, and the front of the packing box is printed with biazeBiaze Brand, charging power, charger appearance drawing and other information.
The back of the box is printed with the product use diagram and some basic information of the business.
biazeBiaze The design style of the 18W USB PD fast charging charger is simple. The shell is white, small and portable. The body surface is sanded to effectively resist fingerprints. The side is designed with a semicircular arc surface.
The input terminal adopts fixed national standard pin.
Standard product parameter information on input end housing Product name: biaze fast power adapter Model: FC87C S/N:2019403F00447 Input: 110-240V~50/60Hz 0.5A Max Output: 5V/3A, 9V/2A, 12V/1.5A Manufacturer: Shenzhen Kunxing Technology Co., Ltd Supervised by: Beijing Fuchuang Yonghua Technology Co., Ltd The product has passed 3C certification.
The output top is equipped with a USB-C interface, and the black tongue does not expose copper.
Compared with Apple's 18W charger, this charger is slightly longer.
The thickness is equivalent to the diameter of a dollar coin.
The net weight of the product is about 50g.
Use ChargeLAB POWER-Z KT001 to detect the output protocol of the USB-C interface, and display that it supports the USB-DCP protocol, as well as the QC2.0 and QC3.0 fast charging protocols.
In addition, its PDO message shows that the USB-C interface also supports the USB PD3.0 fast charging standard, with three fixed voltage gears of 5V/3A, 9V/2A, and 12V/1.5A.
IIBiaze 18W PDDisassembly of fast charging charger
The input end housing is removed by force, the pin is connected with the PCB board through the contact of the spring, and the PCB board is fixed through the groove inside the housing.
Components such as transformers, solid capacitors and electrolytic capacitors on the circuit board are glued for fixation, and white insulation plates are used for isolation between primary and secondary.
The front of the PCB board is at a glance, and the input end is welded with a fuse, NTC surge suppression resistor, and PWM master chip power supply capacitor.
Close up of safety tube, with heat shrink tube on the outer sleeve.
Close up of NTC surge suppression resistor, used to suppress power on surge current.
The power supply capacitor of PWM master chip is from BERYL emerald, and the specification is 50V 10 μ F.
PCB board side view, two electrolytic capacitors and one I-shaped inductor.
Close up of I-shaped inductance, with heat shrinkable tube covered.
The two primary filter electrolytic capacitors are from Acon Zhongyuan, both of which are 400V 15 μ F in specification. The two capacitors work in parallel, with a total of 30 μ F.
Close up of transformer, with information printed on it.
The output terminal is two output filter solid state capacitors and one blue Y capacitor. The USB-C interface is vertically welded to the main PCB using a small protocol board.
The protocol chip and output VBUS switch are welded on the protocol board.
The protocol chip adopts Hynetek Huinengtai HUSB338A, whose peripheral circuit is simple, easy to use and free of burning;Integrated voltage loop compensation and current loop compensation network, including secondary side compensation circuit;VBUS and VIN pins discharge quickly;CC pin supports 20V high voltage, effectively protecting the risk of short circuit between CC pin and VBUS;4mmx4mm QFN-16 package.In addition, this chip has passed the USB PD3.0 certification, and the charging head network has previously carried outRelated reports。
Huinengtai HUSB338A specification data.
The output VBUS switch tube of USB-C interface, model CN4309, PMOS, is from Meilai Innovation.
Details of Meilai Innovation CN4309.
Both solid state capacitors are 16V 470 μ F.
Close up of anti-interference blue Y capacitor.
The welding layout on the back of the PCB board is simple and clear, the primary and secondary end boundaries are obvious, and there are enough safety intervals.
Close up of input rectifier bridge.
PWM master chip PN8161 comes from Chipown chip.The chip integrates a quasi resonant current mode controller and power MOSFET, and is dedicated to high-performance AC/DC switching power supply with simplified peripheral components.The chip provides extremely comprehensive and excellent intelligent protection functions, including output overvoltage protection, cycle by cycle overcurrent protection, overload protection, and soft start functions.
Simbond PN8161 achieves ultra-low standby power consumption and optimal efficiency in full voltage range through the three modes of mixed modulation technology of QR-PWM, QR-PFM, Burst mode and special device low-power structure technology.Frequency modulation technology and SoftDriver technology fully ensure good EMI performance.
Close up of optocoupler, spanning between primary and secondary, used for primary secondary communication, and regulating feedback output voltage.
Simbond PN8307H has a built-in synchronous rectifier controller and high avalanche power MOSFET, which are used to replace the secondary rectifier Schottky diode in the high-performance AC/DC flyback system. The power MOSFET with extremely low voltage drop can improve the current output capacity, improve the conversion efficiency, make the system efficiency meet the level 6 energy efficiency standard, and leave enough margin.
Core PN8307H has a built-in 12m Ω 60V voltage withstand synchronous rectifier tube, which is suitable for 3.6V-20V common adapter output, QC3.0 adapter and other adapters with fixed voltage output.The chip also integrates extremely comprehensive auxiliary functions, including output undervoltage protection, false start prevention, minimum conduction time and other functions.
Detailed parameter data of core PN8307H.
After all disassembly, let's have a family photo.
Disassembly summary of charging head network
BYZ's 18W USB PD fast charging charger has a round white body, small size and easy to carry.The output interface supports QC2.0/3.0 fast charging protocol and USB PD3.0 fast charging standard, and has three conventional voltage gears of 5/9/12V.It is found through disassembly that the charging head network uses Chipown's PN8161+PN8307H 18W minimalist USB PD fast charging charger scheme, which can eliminate multiple peripheral components, and has simple circuits and cost advantages.
In addition, Huinengtai's USB PD3.0 certified chip HUSB338A and Meilai's innovative CN4309 PMOS tube are used at the output end, and the output uses solid capacitor filtering, with solid materials.The transformer on the PCB board and the components around it are glued and fixed, and the primary and secondary are isolated by insulating isolation plates. The design is reasonable.