Affected by the epidemic, the global lack of cores has become a norm. In order to ensure a continuous supply of the market, the hot products of big brands like Bess are often supplied by multiple upstream suppliers.
Charging head network learned that Beth has a 65W gallium nitride charger CCGAN65C3 sales are very good, and its protocol chip is provided by a number of manufacturers, some of which are using nanxin SC2151A and SC2021A, performance also supportS, PPS and other fast charging, support maximum power up to 65W, to ensure that consumers have the same experience.
The following charging head network will disassemble the 65W Gallium Nitride charger in detail to see what is the difference between the internal module based on the design of the South Core Fast Charging Scheme.
First, the appearance of Beth 65W Gallium Nitride charger
The front of the box is printed with the Baseus brand logo, charger exterior drawing, name, and two major selling points of 65W and GaN logos.
The back is printed with a charger usage scenario map and detailed parameters and business information.
The package contains a charger, data cable, instruction manual, etc., and a charger jacket with an electrostatic dust bag.
The attached cable is a CC cable, the cable head shell is designed with the Baseus brand, and the tail of the wire is designed with the word 100W, indicating that the cable supports 100W PD fast charging.
The length of the measured cable is about 109cm.
The cable was measured with an E-Marker chip with a 20V5A power transmission capacity and a maximum of 100W fast charging using The DeveloperLAB POWER-Z KM002C was measured.
The charger adopts a white shell made of PC material and has a matte finish. The shell is designed with brand logo, power logo, etc., and there are LED indicators at the output end corner.
The front center of the fuselage is printed with the Baseus logo.
The back is printed with the name of the merchant, the CCGAN65C3 model and the 65W logo.
Charger parameters are printed on the input housing
Charging name: GaN3 Pro Gallium Nitride fast charger
Input: 110-240V 50/60Hz 1.5A
USB-C1/C2 output: 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A
USB output: 5V3A, 5V4.5A, 9V3A, 12V3A, 20V3A
C1+C2:45W+20W
C1+A:45W+18W
C2+A:5V3A 15W
C1+(C2+A):45+15W。
The charger has been CCC certified.
The input end is equipped with foldable GB pins.
The output is equipped with three USB ports of 2C1A, and the rubber core is orange-red.
The measured charger body height was 63.08mm.
The width is 31.66mm.
The thickness is 36.12mm.
Compared with the Apple 61W charger, the volume advantage is very obvious.
The intuitive feeling of holding it in the hand is very small as a multi-port charger.
Net weight is approximately 117g.
The USB-C1 port was measured using the ChargeLAB POWER-Z KT002 to support Apple 2.4A, Samsung 5V2A, DCP protocol, as well as QC2.0/3.0, AFC, FCP, SCP, PD3.0, PPS fast charging protocol.
PDO messages show that C1 port also has five fixed voltage levels of 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A, and a set of PPS voltage levels of 3.3-11V5A.
The MEASURED USB-C2 port supports QC2.0/3.0, AFC, PD3.0, ppS fast charging protocol.
In addition, it also has five fixed voltage gears of 5V3A, 9V3A, 12V3A, 15V3A, and 20V3.25A.
The measured A port supports QC2.0/3.0, AFC, FCP, and SCP fast charging protocols.
Second, Beth 65W Gallium Nitride charger disassembly
Remove the case and remove the charger module.
The module is covered with an insulated isolation plate and brass heat sink, and a blue thermal pad is attached to the input panel.
Remove the heatsink and attach a blue thermal pad to the transformer.
The measured module length was 59.29mm.
The width is 24.7mm.
The thickness is 32mm.
The front of the motherboard is viewed, and the inputs, outputs and sides are equipped with small boards, and the gaps between the capacitors are reinforced.
At a glance on the back of the board, there is a smd Y capacitor and a secondary buck controller at port C1.
Through observation, it was found that this charger adopts the classic high-frequency QR switching power supply architecture, two DC-DC secondary step-down three-port outputs, and the output power is intelligently distributed.
There are protocol chips, filtered solid capacitors and USB mothers on the output panel, and the two protocol chips of the South Core are used to control the three-port output.
Among them, the C1 port fast charging protocol chip adopts Nanxin SC2151A, which has obtained USB-IF PD3.0 certification, TID: 4869. It is a controller that supports PD and DP/DM fast charging protocols in a 16-pin QFN 4*4mm package, with an integrated feedback loop that supports the latest Type-C and PD3.0 standards, as well as proprietary fast charging protocols that use DP/DM interfaces for a variety of adapter applications.
The NANSIC SC2151A integrates a 32-bit high-performance MCU core with 24kB of single-pass programming memory and 2kB of RAM. The controller integrates USB PD physical layer, Type-C detection, DP/DM fast charging protocol physical layer for various fast charging protocols, and VCONN power supply.
In addition, the output discharge path, built-in programmable feedback compensation, voltage and current sensing, 10-bit high-performance ADC, two 10-bit DACs, NMOS path tube drivers, I2C communication interfaces, and rich protection circuits for the fast charging adapter solution provide a simple and efficient protocol controller solution for applications such as adapters.
The charging head network learned that the South Core SC2151A protocol chip has also been adopted by dozens of well-known brands such as Greenlink 30W PD fast-charging gallium nitride charger, Gushi Technology 30W PD fast-charging gallium nitride charger, Anker 30W mini gallium nitride fast charger, Nubia 30W gallium nitride fast charger and other well-known brands, and the product quality has been unanimously recognized by customers.
In addition, the NANXIN SC2021A protocol chip is used to control the C2 and A port outputs. The SC2021A is a highly integrated Type-C/PD and DPDM fast charge controller. Complies with the latest Type-C and PD 3.0 standards and passes USB PD3.1 compliance testing. The chip supports a proprietary high-voltage fast charging protocol, including a set of USB-C interfaces and two sets of DPDM interfaces, to meet the 1A+1C dual-port fast charging applications.
Nanxin SC2021A integrates a 32-bit high-performance MCU core, 2.5Kb memory and 32Kb MTP memory, supporting private fast charging protocol. The 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 sensing, 10-bit ADCs, dual 10-bit DACs, NMOS gate drivers, I2C interface, and protection circuitry.
SC2021A supports a variety of protection mechanisms, including overvoltage protection (OVP), undervoltage protection (UVP), overcurrent protection (OCP), short circuit protection (SCP), overtemperature protection (OTP), DPDM overvoltage protection, CC overvoltage protection, VCONN overvoltage protection, VCONN overcurrent protection and VCONN short circuit protection, effectively ensuring stable and reliable system operation. The SC2021A is available in a QFN 4*4-32 package. With good protocol compatibility and rich control interface, it can be used for vehicle charging and fast charging applications.
At the input end, there are two fairing bridges on the front of the small board.
Remove the small board and have an ampere X capacitor, common mode inductor, and NTC surge suppression resistor on the other side.
The delay fuse comes from Dongguan Beite Electronic Technology Co., Ltd. with a specification of 3.15A 250V.
NTC surge suppression resistors are used to suppress the upwelling inrush current.
The safety X capacitor comes from Chengxi Electron and has a capacity of 0.22μF.
Common mode inductors are two-wire wound for filtering out EMI interference.
Close-up of the YBS3010 rectifier bridge, with two to spread the heat equally.
Filter inductor close-up.
Four high-voltage filter electrolytic capacitors are from JSH Wanjingyuan, two with a specification of 400V 27μF and two with a specification of 400V 39μF.
The side of the module is welded to the switching power supply platelet, the back side is exposed copper and tin to enhance heat dissipation, and the corresponding capacitor position is cut out to reduce the thickness of the module.
There is a transformer in the middle on the other side
Remove the switching power supply board and provide the primary controller, MOS tube, optocoupler, chip Y capacitor, and output filter solid capacitor on the front.
The main control chip power supply capacitor is from Yongming, and the specification is 50V 10μF.
The switching power supply main control chip adopts MK2697, which is a QR PWM controller optimized for PD/fast charging applications. The controller's wide VCC operating voltage range (9V-90V) allows it to cover the PD/PPS output range from 3.3V to 23V without the need for additional auxiliary windings or linear buck circuitry.
The MK2697 adopts the drive technology of Mo Ruixin's independent intellectual property rights to simultaneously optimize the voltage stress of the primary and secondary power tubes. Up to 200kHz operating frequency, supporting high frequency small size PD fast charging source design.
The MK2697A provides comprehensive protection functions with output OVP, OPP, VCC OVP, BROWN-IN/OUT, secondary side SR short circuit protection, PIN pin OPEN/SHORT protection, etc.
The charging head network disassembly learned that the use of Maoruixin fast charging solution is also Huakesheng mini 33W fast charging, Beth 20W 1A1C fast charger, Aisha Watt 65W 2A1C gallium nitride fast charger, air-J 18W 1A1C fast charger, Opage 65W 2C1A super silicon fast charging, Huakesheng mini 30W gallium nitride fast charging and other products.
The Gallium nitride chip is from nano-micro semiconductor, model NV6123. This chip is a thermally enhanced version of the NV6113, optimized for high frequency and soft switching topologies, with an internal integrated driver, a conductivity resistance of 300mΩ, and a 6*8mm QFN package.
Detailed specifications of nano-NV6123.
Through disassembly, the charging head network learned that the nano-gaNFast power chip has previously been adopted by dozens of products of well-known brands such as iQOO 120W Gallium Nitride Flash Charge, Motorola 68W Gallium Nitride Charger, Dell 60W Gallium Nitride Fast Charge, OPPO 50W Cookie GaN Fast Charge, Xiaomi 65W 1A1C Gallium Nitride Fast Charge Charger, Nubia 65W Deuterium Feng Three-Port Gallium Nitride Fast Charge, Lenovo YOGA 130W Dual USB-C Port Fast Charge and other well-known brands.
Transformer close-up.
CT 1019 optocoupler for output voltage feedback.
The CHIP Y capacitor comes from Sichuan TerryXiang Technology Co., Ltd., model TMY1221K, with small size, light weight and other characteristics, very suitable for use in high-density power products such as gallium nitride fast charging.
Terry Xiang focuses on the research and development, production and sales of passive components, with a registered capital of 100 million yuan. There are two types of independent capacitor brands: SMD TRX and DIP TY capacitors, TRX will be committed to the research of ceramic materials, in order to expand the application of more categories, to provide customers with more solutions.
The charging head network learned that in addition to being used by dozens of fast charging products of Brands such as Belkin, Anker, QCY, Shengli, Maddo, OPPO, Lenovo, Nubia, Beth, Hailutong, First Guard, etc., in addition to being used by Igor 40W LED drive power supply, Changhong 42-inch intelligent network TV 42P3F built-in power supply, Zhuo Feihang 45W Gallium nitride ultra-fast wall charging and other products, the performance has been unanimously recognized by customers.
Close-up of the Terry SMT Y capacitor on the motherboard, model TMY1152M.
Close-up of synchronous rectifier controller, silk screen printing 91808.
The synchronous rectifier tube adopts Lihong Micro LH062N100.
Output filtered solid capacitor close-up, Yongming NPX series, specifications of 25V 560μF. This series of capacitors has the characteristics of small size, low ESR, high allowable ripple current, high reliability, and resistance to switching shock.
The charging head network learned that Yongming NPX series solid capacitors have previously been used by Anker 30W Gallium Nitride Super Charge, Anker 65W Gallium Nitride Super Charge, Anker 45W Gallium Nitride Super Charge, Flash Pole 100W 3C1A Gallium Nitride Fast Charge, Momix 65W 2C1A Gallium Nitride Fast Charge, Beth 45W 1A1C Gallium Nitride Charger, Nubia 65W Deuterium Front Gallium Nitride Charger and other products, in addition to being used in small black, Pinsheng, Bunkers and other brands of 20W mini charge, won unanimous recognition from customers.
After removing the output platelet, a buck controller and a buck inductor can be seen in the nearby area.
The Xintan Micro NDP1460QB is a high efficiency monolithic synchronous buck DC/DC converter that supports a wide range of voltage inputs from 7 to 38V and can provide up to 6A of continuous output current. The chip integrates a 14mΩ high/low side switch that supports inner loop compensation, soft-start, and is available in a thermally enhanced QFN5*5 package. This one is used for the C1 port synchronous rectification secondary buck output.
Another step-down converter also uses the Xintan Micro NDP1460QB.
Close-up of two buck inductors.
The secondary filtered solid capacitors are all from JSH Wanjingyuan, and the specifications are 25V 220μF.
A silk-screen A63A chip.
The interface output protection tube adopts LH75N03.
A close-up of another LH75N03 MOS tube.
There is also an LH03P03V MOS tube on the back of the small board.
USB-C female close-up.
USB-A mother seat close-up.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
Through disassembly, the charger protocol chip adopts Nanxin SC2151A and SC2021A, which is measured to support QC2.0/3.0, AFC, FCP, SCP, PD3.0, PPS multiple fast charging protocols, and supports 45W+20W dual-port output strategy to meet the needs of MacBook and iPhone 12/13 simultaneous fast charging.
In addition to the advantages of performance, Nanxin SC2151A and SC2021A these two products have achieved mass production and market verification, can provide customers with stable supply to reduce pressure, it can be said that both quality and quantity. In addition, through disassembly, it was found that the circuit based on the design of the two chips of Nanxin is not complicated, is also friendly to engineers, and can also accelerate the product market.