preface
Nubia launched the Optimus/Weizhentian joint Red Devil 7 series machine at the fourth anniversary of the "Energy Awakening, Let's Roll Out" brand and the new product launch of the Red Devil x Transformers joint brand held on April 25, and also brought a series of war-damage style charging accessories.
Charging head network has gotten a more powerful performance of the new 120W four-port Gallium nitride charger Transformers Battle Damage Edition, the charger only the size of the bank card surface, support dual-port 100W blind plug, support for fast charging for multiple devices at the same time, fully meet the high requirements of digital geeks. Let's disassemble this charger and see how it is designed inside.
Nubian Transformers Battle Damage Edition 120W Gallium Nitride Quick Charge Out of the Box
The packaging box is dominated by metallic silver, the top edge is full of mechanical style border design, the upper right corner is red English TRANSFORMERS (Transformers), the center is the Bopai logo, and the bottom is the product name - deuterium gallium nitride fast charger, the joint theme is suddenly highlighted.
On the side is a mechanical frame with deuterium character design.
After all, it is a joint product, and the other side is designed with TRANSFORMERS.
The front end of the box is also designed with a Bopai logo.
The packaging box adopts the design of the heaven and earth cover, and the bottom is pasted with information stickers, which can learn the name, model, manufacturer and other information of the product.
The package contains a charger, data cable and instruction manual.
The attached cable is braided CC thread, resistant to dirt and durable, and is tied and finished using magic cable ties.
The shell at both ends of the data line is made of metal, which is also made of war damage process, in addition to the car and the decepticon totem, and the convex teeth on both sides are convenient for users to plug and unplug, and the design is very sincere.
The measured cable length is about 156cm.
The built-in E-Marker chip of the data line measured using The LoggerLAB POWER-Z KM002C is from YingjiXin, and the power transmission capacity is 50V5A, which can achieve full coverage of PD3.1 fast charging standard.
The weight is about 56g.
The charger continues a generation of 120W 2C1A three-port deuterium gallium nitride fast-charging box shape, but as a co-branded version, the appearance combined with transformer elements has been newly designed, and there is also a USB-C interface.
The fuselage shell adopts the war damage style design, the surface adopts a multi-layer spraying process, and it is polished by hand, it can be said that each product is "the first and the same". The front of the fuselage is also printed with TRANSFORMERS and bopai logo.
The other side is designed with the word "deuterium".
Charger parameters are printed on the input housing.
Parameter close-up:
Model: PA0219
Input: 200-240V~50/60HZ 1.5A
Single-port output:
USB-C1/C2:3.3-20V5A、5V3A、9V3A、12V3A、15V3A、20V5A,100W Max
USB-C3：5V3A、9V3A、12V2.5A、15V2A、20V1.5A，30W Max
USB-A：4.5V5A、5V4A、9V3A、12V2.5A、20V1.5A，30W Max
Dual output:
C1+C2:60W+60W
C1/C2+C3/USB-A:90W+30W
Three-port output:
C1+C2+C3/USB-A:60W+30W+30W 或 30W+60W+30W 或 45W+45W+30W
Four-port output:
C1+C2+C3+USB-A:60W+30W+10W+10W 或 30W+60W+10W+10W
Manufacturer: Shenzhen Kunxing Technology Co., Ltd
Producer: Nubia Technology Limited
The product has passed the CCC certification.
The charger is equipped with foldable national standard pins, which is easy to carry, and a charger can basically meet the needs of multiple devices at the same time.
The other end is equipped with four USB ports of 3C1A, and the different logos are printed next to the interface for easy use.
The measured charger body height was 56.3mm.
The width is 87.22mm.
The thickness is 30.91mm.
The size of the charger held in the hand is intuitive.
The net weight of the charger is about 244g.
The total weight of the charger cable is about 300g.
The USB-C1 port measured using the Chargelab POWER-Z KM002C supports apple 2.4A protocol, as well as QC3.0, QC5.0, AFC, FCP, SCP, PD3.0, PPS fast charging protocol.
It also has five fixed voltage levels of 5V3A, 9V3A, 12V3A, 15V3A, 20V5A, and a set of PPS voltage levels of 3.3-21V5A.
The USB-C2 port compatibility protocol is the same as that of the C1 port.
The PDO message is also exactly the same, that is, the single port output performance of C1 and C2 is exactly the same, and it supports blind power insertion.
The measured C3 port supports Apple 2.4A, Samsung 5V2A protocol, and QC3.0, PD3.0, ppS fast charging protocol.
In addition, it also has five fixed voltage levels of 5V3A, 9V3A, 12V2.5A, 15V2A, 20V1.5A, and a set of PPS voltage gears of 3.3-21V1.5A.
The USB-A port is measured to support QC3.0, AFC, FCP, and SCP fast charging protocols.
Using the C1 port of the charger to charge the Red Devil 6 Pro, the charging power was measured at 17.43V 5.47A 95.34W.
Using a charger to charge the Red Devil 7 Pro phone, the measured power was 16.96V 5.46A 92.67W.
Using the charger to charge the Apple MacBook, the measured charging power was 19.12W 4.66A 89.02W. For other detailed test data, please refer to the evaluation report released by the charging head network evaluation room.
Nubian Transformers Battle Loss Edition 120W Gallium Nitride Fast Charge Disassembly
After having a basic understanding of nubia's 120W charger, let's disassemble it below and take a look at the charger's workmanship materials.
First, the housing is removed from the pin side seam, and the wire weld connection between the folding socket and the PCB is welded, and the wire cover has a magnetic ring to suppress high-frequency interference.
Remove the PCBA module, cover the front of the motherboard with a brass heatsink, and an isolation plate underneath the heatsink.
The heat sink is punched and dented in the position of the corresponding transformer to dissipate heat from the transformer.
The back of the motherboard is also covered with heatsinks and barrier sheets.
The folding pins are reinforced with glue, and two wires are connected to the PCB through the magnetic ring.
The heatsink is soldered to the PCB.
Remove the heatsink, and the transformer and the back-side heating device are attached with thermal pads to cool down the devices on the PCB.
The PCB length measured using a vernier caliper is approximately 82.2mm.
The PCB width is about 50.8mm.
The thickness is approximately 21.9mm.
The front of the PCB is listed, the top middle position is the input filter circuit, the lower right corner is the PFC boost inductor and filter capacitor, the lower left is the secondary buck circuit and output interface, and the upper part is the transformer and filter capacitor.
On the back of the PCB, from top to bottom are the input rectifier bridge, the PFC rectifier, and the PFC switch tube. The middle part is the primary controller and switch tube, and the right side is the synchronous rectifier and synchronous rectifier controller.
Through observation, it was found that this 120W charger adopts PFC+QR switching power supply architecture design, PFC performs power factor correction, QR flyback power supply performs fixed voltage output, and the output adopts a secondary buck circuit, and the output voltage of the control interface is identified by the protocol chip through the protocol. Let's start with the inputs to understand each device.
At a glance at the inputs, there are fuses, NTC thermistors, and EMI filter circuits.
The AC input first flows through the fuse, the delay fuse comes from Bate Electronics, discharge number: 932 5A 250V. The fuse is used to limit the fault current, and when the current exceeds the fuse rating, the cut-off circuit is blown.
Next is the NTC thermistor, NTC surge resistance cold state resistance is high, can effectively suppress the charger when plugged in, reduce the spark of the socket, after normal operation with the temperature rises, the resistance is reduced, reduce the loss. NTC silk screen printing 2.5D-11. 11mm diameter, cold resistance 2.5Ω, pin sleeve magnetic ring to suppress high-frequency interference.
The first common-mode inductor is then wound and glued with insulated wire and enameled wire.
The first safety X2 capacitor is from Dongguan Chengxi, with a capacity of 0.1μF.
The second common-mode inductor is wound using flat copper wires and an insulating bracket welded to the bottom.
The second safety X2 capacitor is from JURCC Gateway Electronics with a capacity of 0.47μF. The AC current passes through the EMI filter circuit, which can filter out the interference of the charger during operation and the high-frequency interference in the mains.
The input AC current passes through the fuse and NTC thermistor, and the EMI filter circuit is sent back to the rectifier bridge. The rectifier bridge uses two Pingwei TBM810, 8A 1000V, and the two rectifier bridges use half-bridge connection to share the heat. The rectifier bridge rectifies the ALTERNA into a pulsating direct current.
The pulsating DC power output of the rectifier bridge is filtered by the filter inductor and filter capacitor and sent to the PFC power factor correction circuit. The larger volume on the left side of the figure is the PFC boost inductor, and the tape-wrapped magnetic ring inductor is the filter inductor.
Filter inductance close-up, magnetic surround, wound tape insulation.
Two CBB21 membrane filter capacitors are close-ups, both 0.47μF 630V.
The PFC power factor correction circuit compensates for the phase difference between the input current and the voltage by means of a boost, reduces the inrush current when charging the large-capacity electrolytic capacitor in the high-power charger, and avoids the impact of the inrush current on the power grid waveform. At the same time, PFC can also reduce the capacity of the primary electrolytic capacitor and reduce the volume of the charger by boosting.
The PFC boost controller adopts ON Semiconductor NCP1622, which is an enhanced critical mode boost PFC controller with valley frequency foldback, improved transient response performance and conversion efficiency, and simplified peripheral components. The NCP1622 performs power factor correction of the pulsating DC power output by the rectifier bridge to power the switching power supply.
The PFC boost switch tube adopts Innosico INN650D260A Gallium Nitride power device, rated at 650V, peak withstand voltage of 750V, conductive resistance of 260mΩ, in line with the industrial application requirements of JEDEC standard, support ESD protection, support Kelvin source pole. The maximum operating temperature is 150°C.
The INN650D260A supports ultra-high switching frequencies, no reverse recovery charge, and has very low gate charge and output charge in accordance with RoHS, lead-free, EU REACH regulations.
Innosyco INN650D260A Details.
Close-up of the PFC boost inductor with ATQ2415 core.
The PFC boost rectifier is from PANJIT Qiangmao, model MRC5J, is a 5A, 600V withstand voltage ultra-fast recovery diode.
PFC bypass diodes to charge the filter capacitor when plugged into a power supply, protecting the PFC circuit.
The PFC boost output is filtered using two high voltage electrolytic capacitors, one of which is from the Acon intermediate and has a specification of 33μF 400V.
The other filter capacitor is from Emerald and is 400V 47μF. Two filter capacitors turn the pulsating DC filter into direct current, which is fed into the primary side of the transformer, and the main control chip controls the gallium nitride power tube for high-frequency switching, and converts it into a low-voltage ALTERNA output through the transformer.
The main control chip adopts ON Semiconductor NCP1342, which is a high-frequency flyback quasi-resonant primary PWM controller, which has built-in active X2 capacitor discharge, supports wide range of Vcc power supply, and supports external thermistors for overtemperature protection and multiple perfect protection functions.
The Gallium Nitride power switch with the controller is Innoseco INN650D150A, which is a 650V gallium nitride high-pressure single tube with a transient withstand voltage of 750V and a conductivity of 150mΩ, which is available in a DFN8*8 package.
THE INN650D150A supports ultra-high switching frequencies, no reverse recovery charge, has very low gate and output charges, meets the requirements of JEDEC standards for industrial applications, has built-in ESD protection, and complies with RoHS, lead-free, EU REACH regulations.
Current sampling resistor in series with Innosecco Gallium Nitride power tube, 2512 package, 120mΩ for sensing primary current to the main control chip.
Close-up of the switching transformer, with ATQ2417 core, tightly wound with horse-drawn tape.
Between the primary stages is a photocoupler, model OR-1009, for output voltage feedback.
The SMT Y capacitor comes from Heshentang, using two series to strengthen the withstand voltage, improve the safety level, and meet the safety requirements.
The secondary output of the transformer enters the synchronous rectifier circuit, which converts the alternating current into pulsating direct current, and the synchronous rectifier tube uses two MOS in parallel. Synchronous rectifier tube from AOS Bandai, model AONS62922, withstand voltage 120V, conductivity 5.8mΩ, available in DFN5*6 package.
Synchronous rectifier controller adopts MPS MP6908A, the maximum operating frequency is 600KHz, support DCM/CCM/QR quasi-resonant working mode, built-in ring detection to prevent DCM and QR operation under false opening, support logic voltage and standard voltage synchronous rectifier tube.
Both output filter capacitors are from Brickraker, RT Series high ripple products, heat resistant to 105°C, and the specification is 680μF 25V.
The other is 1000μF 25V, and two filter the pulsating DC output of the synchronous rectifier output into a direct current to power the secondary buck circuit.
The power output is also filtered by a filter inductor, which is filtered and sent to a secondary buck circuit.
Nubia's 120W charger uses three independent secondary buck circuits, supports USB-C1 and C2 ports 100W blind plug, USB-C3 and USB-A ports have a common buck circuit, supporting up to 30W output. First, the secondary buck circuit of USB-C1 and C2 is introduced.
A close-up of the secondary buck platelet for USB-C1 and C2, with an insulating sheet underneath the buck inductor to isolate the board. Both interfaces support a 100W output and the circuit design is nearly identical.
The back of the small board is slightly different, and the component layout is slightly different.
Remove the plastic insulation sheet covering the small board and start looking at the device on the small board.
The main control chip of the buck circuit of the two USB-C ports adopts Zhirong SW3516H for buck control and protocol identification. Zhirong SW3516H is a highly integrated multi-fast charging protocol dual-port charging chip, which supports A+C port arbitrary port fast charging output, and supports dual-port independent current limiting.
The SW3516H integrates a 5A high efficiency synchronous buck converter. Support PPS/PD/QC/AFC/FCP/SCP/PE/SFCP and other fast charging protocols, maximum output PD 100W, CC/CV mode, and dual-port management logic. Only a small number of peripheral devices are required to form a complete dual-port charging solution with high-performance multi-fast charging protocol.
Through disassembly, the charging head network found that SW3516H was also used by Asus 65W 2C1A Gallium Nitride Charger, Nubia 65W Deuterium Feng Three-Port Gallium Nitride Fast Charger, Leibai 65W GaN Fast Charge, Greenlink 65W 4C GaN Fast Charge Charger, Lenovo 90W Flash Charge Dual-Port Gallium Nitride Charger, Hongdashun 120W Four-Port 2C2A Fast Charge and other products, in addition, Zhirong's fast charge chip can also be used for USB PD fast charge mobile power, fast charge car charging and other fields.
A flexible microcomputer is soldered on the USB-C2 step-down plate for intelligent power distribution of the output interface of the whole machine. Microcontroller screen printing MM01N, the actual model is MM32F0010, is a M0 core of 32-bit microcontroller, using QFN20 package.
Two synchronous buck switch tubes using the new Clean Energy NCEP40T11G, NMOS, withstand voltage 40V, conductivity 2.4mΩ, using DFN5*6 package, two to form a half-bridge.
The VBUS switch tube is from the core control source, model AGM303AP.
The output filter capacitor is from BERYL Emerald, CS Series SMD Solid Capacitor, 180μF 25V.
USB-C interface close-up, via welding, black rubber core does not expose copper.
Below is the USB-C3 and USB-A output board, the two interfaces share a set of buck chips, support single-port fast charging, dual-port 5V output.
The back of the board is soldered with buck protocol chips and buck MOS tubes.
The buck protocol chip for USB-C3 and USB-A interfaces uses Zhirong SW3516H.
The external synchronous buck tube is from the core control source, model AGM405AP1, NMOS, withstand voltage 40V, conductive resistance 5.7mΩ, using PRPAK 3.3*3.3 package.
USB-C3 interface via welding fixed.
USB-A interface is soldered vertically.
Close-up of the magnetic ring buck inductor.
The output filter capacitor is from Emerald, BC Series, with a specification of 100μF 25V.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
Nubia in the 2C1A three-port deuterium front gallium nitride fast charger, updated the launch of 3C1A gallium nitride fast charger, of which USB-C1 and C2 support 100W power blind plug, USB-C3 and USB-A port support 30W fast charging. At the same time, the product supports QC, AFC, FCP, SCP, PE2.0, PD3.0, PPS and other mainstream fast charging protocols on the market, with 5A PPS voltage gear, the overall compatibility is very good, to meet the needs of major brands of laptops, tablets and mobile phones fast charging.
As always, this charger is oem by Kunxing. The charging head network learned through disassembly that the charger PFC boost circuit is composed of ON Semiconductor NCP1622 controller with Innosyco INN650D260A gallium nitride power switch tube; the switching power supply adopts ON Semiconductor NCP1342 with Innoseco INN650D150A, and MPS MP6908A with Bandai synchronous rectifier tube; the main control chip of the three secondary buck circuits at the output is composed of Zhirong SW3516H. The microcomputer of The agile micro-chip microcomputer realizes the intelligent distribution of port power.
In addition, the use of zhongyuan and emerald electrolytic capacitors for input filtering, Berry Kai and emerald solid capacitors for synchronous rectification and secondary buck output filtering, the input end using two-stage common mode inductor for EMI filtering, component gluing reinforcement, commutation bridge, gallium nitride switch and transformer and other major heating devices equipped with thermal pads and heat sinks to help dissipate heat, the overall material mainstream of the product, exquisite workmanship.