Founded in 2017, Maoruixin (Shenzhen) Technology Co., Ltd. is committed to the design, research and development, sales and technical services of high-performance analog and mixed-signal integrated circuits, headquartered in Shenzhen Shekou Qianhai Free Trade Zone, and has set up R&D centers and offices in North China, East China and Northwest China. The core members of the company have long-term experience and experience in Europe, the United States and domestic first-class semiconductor companies, outstanding performance in the field of communications, industrial and consumer power supplies, and have good market development capabilities.
Maoruixin's distinctive and differentiated products are positioned in high-performance power management, and currently have achieved the status of leading analog chip brands in china in applications such as high-power PD fast charging, data center power supply, new energy BMS, charging pile module and so on.
Since the launch of its first synchronous rectification product in 2017, Maoruixin has 5 mass production product lines, namely synchronous rectification, driver, load switch, AC-DC, DC-DC, and in 2021, poE and PFC two new product lines have been added, which are currently in the sample stage.
Introduction of Maoruixin AC-DC power chip
Maoruixin AC-DC power supply chip can be divided into four categories, namely 110V withstand voltage for CCM/QR mode controller, 40V withstand voltage suitable for CCM/QR controller, 110V withstand voltage high frequency QR controller, and integrated power device controller. In addition, a PFC controller MK2526 was introduced to meet the application needs of the high-power fast charging market.
Among them, the 110V Vcc withstand voltage performance of the MK2687 series can optimize the PD auxiliary power supply design, support the output change process of USB PD PPS 3.3V-20V, and eliminate the need for additional voltage regulator circuits. At the same time, the application of independent patented technology can significantly reduce the voltage spike of the original and secondary power tubes at boot time, improve system reliability, and have achieved mass production in many customers.
The MK2697 series is a high-frequency QR flyback controller suitable for gallium nitride fast charging design, supporting direct drive GaN power devices. It also has a wide VCC operating voltage range (9V-90V), allowing it to cover the PD/PPS output range from 3.3V to 23V without the need for additional windings or linear buck circuitry.
Since PD fast charge has multiple different output voltages, the MK2697 uses an adaptive multi-mode that operates at different loads and outputs and is adjusted to dcm/QR. At light loads, it will operate in burst mode to improve efficiency.
In terms of controllers with built-in power devices, MaoruiXin has two forms: built-in silicon MOS and built-in GaN. Among them, MK2787/MK2788 is a 33W combined gallium nitride chip launched by Maoruixin, MK2787 adopts ESPO-8 package design, and MK2788 adopts DFN5x6 package design, which is convenient for customers to choose.
MK2787/MK2788 adopts The unique high-voltage technology of Maoruixin in the leading position, Vcc withstand voltage up to 110V, PPS application does not require voltage regulator circuit; the use of patented floppy drive technology, effectively reduce the voltage stress of synchronous rectifier; the use of high-frequency QR control technology, effectively reduce the size of the transformer.
Similarly, In terms of synchronous rectifier controllers, Maoruixin also has a very rich product, including synchronous rectifier controllers that support high frequency and low frequency, synchronous rectifier chips with integrated 100V MOSFETs, synchronous rectifier chips with integrated 60V MOSFETs, and synchronous rectifier chips with integrated 45V MOS.
The MK1716 integrates a secondary synchronous rectification controller and a 16mΩ/100V synchronous rectification MOS. The MK171X series is a high performance synchronous rectification power switch with integrated N-channel power MOS for isolated synchronous rectification applications. Ideal for chargers where high efficiency is required and compatible with CCM, DCM and QR modes.
The MK1718 integrates a secondary synchronous rectification controller and an 8.5mΩ/100V synchronous rectification MOS. The MK171X series adopts self-powered circuit with independent intellectual property rights, which can be flexibly placed at the positive or negative end of the output. When placed on the positive end, no extra auxiliary windings are required. Support for 10ns off-delay and up to 4A of pull-down currents help the system operate reliably in CCM mode. Supports on-ramp-up and shutdown mechanisms to maximize the on-time of the external drive MOSFET for the highest possible efficiency, and to detect DCM ringing autonomously to prevent false turn-on.
The MK91736 has a built-in 16mΩ synchronous rectifier tube that supports a 200kHz switching frequency. For the 18W/20W fast-charging PD market, Morris has introduced a series of high-performance synchronous rectifier power switches MK9173X with built-in 60V MOSFETs. Ideal for chargers where high efficiency is required and compatible with CCM, DCM and QR modes.
The MK91738 is a high-performance synchronous rectification power switch that supports CCM, integrates 10mΩ 60V synchronous rectification MOS, suitable for isolated synchronous rectification applications, especially for charger continuous high efficiency occasions, compatible with CCM, DCM and QR modes. The MK91738 can be flexibly placed on the positive and negative outputs without the need for additional auxiliary windings.
By properly matching the PWM control with the synchronous rectifier controller, Maoruixin has the ability to provide a complete power supply solution of 20W-100W.
Mo Ruixin AC-DC chip application case summary
1. Disassembly report: Aisawate AISHA Watt 65W 2C1A Gallium Nitride fast charger
Aisawate's charger is equipped with foldable feet, which are compact and portable with gallium nitride. Equipped with three output interfaces of 2C1A, the maximum output power is 65W, which meets the needs of fast charging of large and small devices such as laptops and mobile phones, and meets the simultaneous charging of up to three devices. At the same time, thanks to the use of Zhirong fast charging chip, it supports multiple mainstream fast charging protocols on the market, such as QC, AFC, FCP, SCP, PE2.0, PD3.0 and PPS, with good compatibility.
The charging head network learned through disassembly that this charger switching power supply adopts the MK2697 gallium nitride direct drive scheme of Maoruixin, and is equipped with the gallium nitride power device of the core crown technology. The entire PCBA module, whether it is the components of the front layout or the circuit on the back of the motherboard, is very simple and pleasing to the eye.
2. Disassembly report: Beth 20W super silicon fast charger Pro version
As the Pro version of the super silicon series, this 20W fast charge adopts purple color, which has a high appearance value and is equipped with folding feet for portability. Thanks to the application of Tiande Yu JD6606S protocol chip, it is compatible with QC, AFC, FCP, SCP, PD3.0 fast charging protocol, supports Apple's 20W PD fast charging, and can also meet the needs of Huawei, Xiaomi and other brands of mobile phone fast charging.
The charging head network learned through disassembly that the charger internally uses a multi-piece small board stacking design to reduce the overall volume as much as possible. In terms of solution, the power supply scheme of MK2687 master control and MK91738 synchronous rectifier chip was selected. The internal devices are glued and reinforced, and the primary secondary is insulated and isolated.
3. Disassembly report: Beth 20W 1A1C fast charger
This can not only meet the needs of iPhone 12 full-speed fast charging, but also the additional 18W fast charging A port enables the charger to quickly charge more brand mobile phones, and finally for a wider range of user groups. The charger supports QC, AFC, FCP, PD3.0 fast charging protocol, and the overall compatibility is good.
Charging head network disassembly found that this charger adopts The MK2687+MK91736 fast charging scheme of Maoruixin, which has a high degree of integration, simplifies the circuit to improve efficiency, and has the advantages of high reliability and comprehensive protection; the protocol chip has passed THE USB PD3.0 certification and has reliable performance.
4. Disassembly report: Beth 30W 2A1C fast charger
Bess this 30W charger is equipped with a 2A1C interface, throughout the entire 30W level fast charging accessories can be equipped with 3 interfaces is very rare, and this is also a major selling point of the product, can charge three devices at the same time. In addition, it is compatible with QC, AFC, FCP, PD3.0, PPS and other fast charging protocols, and the overall compatibility is good, which can meet the fast charging of iPhone 13 new machines and the fast charging of other brands of mobile phones.
It is understood that the 30W 2A1C charger adopts the MK2687 main control chip of Maoruixin, and its 110V Vcc withstand voltage optimization PD auxiliary power supply design supports the output change process of USB PD PPS 3.3V-20V without additional voltage regulation circuit. In addition, the use of independent patented technology can significantly reduce the voltage spike of the original and secondary power tubes at boot time and improve system reliability.
5, new design, breaking through the volume limit, Beth 65W GaN3 Pro Gallium Nitride charger disassembly
Beth has launched three Gallium Nitride chargers for the 65W 2C1A fast charge series, and as the third generation of the series, the Bess 65W GaN 3 Pro Gallium Nitride Fast Charge Charger has continued the previous two generations in terms of appearance and compatibility performance, while making a breakthrough in the volume scheme, achieving higher power density and relatively better portability.
The internal charger is based on the market mainstream high-frequency QR flyback topology architecture development, AC-DC part of the use of Maoruixin MK2697 gallium nitride control chip scheme, with nano-micro semiconductor GaNFast gallium nitride power chip; the secondary buck part of the selection of two smart rong star scheme, two independent buck, so as to achieve a single C-port blind plug output of 65W, multi-port power intelligent distribution.
6. Dismantling Report: UOCO. 65W 2C1A Gallium Nitride Fast Charge Charger
UOCO. 65W GaN fast charger supports QC, AFC, FCP, SCP, PE2.0, PD3.0, PPS fast charging protocol, to meet the needs of laptops and Apple, Huawei, Xiaomi and other brands of mobile phones at the same time fast charging, practical performance, while equipped with foldable pins, very small and portable, to meet the needs of business.
In terms of materials, the selection of Maoruixin high-performance main control chip MK2697A, and with the Nenghua Gallium Nitride power device and the Yingji core protocol chip, the entire Gallium Nitride charger has more advantages than traditional chargers in terms of reliability, efficiency and loss.
7. Disassembly report: Gushi Technology 30W 1A1C dual-port fast charger
Gushi Technology 30W fast charge charger is robust multi-interface and small size, compatible with QC, AFC, FCP, SCP, PD3.0 and PPS fast charging protocols, with 5-20V complete fixed voltage gear and 3.3-11V3A, 3.3-16V2A two sets of PPS voltage gear, strong performance, fully meet the needs of Apple, Huawei, Xiaomi and other well-known brand equipment fast charging.
Through disassembly, the charger adopts The MK2697A main control of Maoruixin with Innoseco INN650DA04 gallium nitride power chip, as well as synchronous rectifier controller and Weizhao synchronous rectifier tube to form a switching power supply. The dual output voltage is controlled by using the XPD740 protocol chip of Cloud Silicon Semiconductor. Yongming KCX and NPX series small volume capacitive filtering, the overall material is good.
8. Disassembly report: Opage 65W 2C1A super silicon fast charger
Opage 65W super silicon fast charge charger body shell scrub, the overall design is very simple, equipped with foldable pins and 2C1A three USB interfaces, support QC, AFC, FCP, SCP, PE2.0, PD3.0, PPS mainstream fast charge protocol, with 5-20V complete voltage gear, support 3.3-11V5A PPS fast charge, but also support Huawei 22.5W super fast charge, good overall compatibility, practical performance, can be very compatible with most of the brand equipment on the market.
The charging head net learned through disassembly that in addition to the motherboard, the charger also has four additional small boards to make full use of the internal space. Transformers, capacitors, etc. are fixed with glue, and the modules are covered with brass heat sinks. The charger adopts The MK2697A main control power chip of Maoruixin, and the two DC-DC circuits adopt the Zhirong SW3516H solution.
9, the socket of the bed becomes faster in seconds, the bull launched a new product of 86 panels, and the internal materials are disassembled and revealed
Bull's 20W fast-charging wall plug is the same size as the traditional 86 panel, using a white plastic shell made of PC material, and the surface is high-gloss design, which is very smooth. Equipped with two-pin and three-pin jacks and 1A1C interface, it is fully available in types and rated at 2500W to meet the power needs of most equipment. The USB interface supports QC, AFC, FCP, PE2.0, PD3.0 multiple fast charging protocols, and the compatibility is good.
Charging head network through disassembly found that the socket fuselage shell layer by layer design, buckle fixed, charger module components layout is clearly layered, the use of Kangyuan main control with Maoruixin MK91738 synchronous rectifier chip high-integrated switching power supply scheme, the protocol use of Yingji core IP2726 control two interface output voltage, the overall look of the whole set of solutions is conducive to the charger module to achieve miniaturization, to achieve the purpose of tucking into limited space.
10. Disassembly report: Huakesheng mini 30W gallium nitride fast charger
The overall size of Huakesheng's mini 30W gallium nitride fast charge is only 34*27*27mm, which is very small. In addition, it is compatible with QC, AFC, FCP, PD3.0 and PPS fast charging protocols, with 5V3A, 9V3A, 12V2.5A, 15V2A, 20V1.5A, 3.3-11V3A, 3.3-16V2A voltage gears, super power density, strong performance, to meet the needs of major brands of mobile phones, tablets and other equipment fast charging needs.
Through disassembly, the charger PCBA module is composed of two small boards, and the glue between the components conducts heat and insulation. The charger adopts The MK2697 master control with Innosyco INN650DA04 Gallium Nitride power chip, and the MK1718 switching power supply scheme of Thermos core synchronous rectifier chip. And the use of cloud silicon semiconductor XPD737 protocol chip, Yongming small volume capacitor filtering, the overall material is good.
11. Disassembly report: Huakesheng mini 33W fast charger
Hua Kesheng's 33W mini charging body is very simple, can be convenient for customers to carry out differentiated customization, three-dimensional about 35 * 30 * 30mm, power density of more than one watt per cubic centimeter, very compact, to meet the market requirements for mini charging. In addition, the charger performance is also very strong, support QC2.0/3.0, AFC, FCP, PD3.0 and PPS fast charging protocol, with 5-20V complete voltage gear, as well as 3.3-11V3A PPS voltage gear, good compatibility, to meet the needs of major brands of equipment fast charging.
The charging head network learned through disassembly that the charger PCBA module is composed of two small boards, and the glue between the components is reinforced. The charger adopts The MK2697+MK91808 high-frequency QR fast charging scheme of Maoruixin, which can actually support more than 65W output power, and ensures reliable performance with Huakesheng 33W mini charging.
12. Disassembly report: IDMIX Damai MFI certification three-in-one mobile power supply CH07
Damai three-in-one mobile power supply won the Red Dot Award, the appearance design has its own uniqueness, and also passed the Apple MFi certification, the overall appearance and quality are guaranteed. Although it is a three-in-one product, compared with the conventional charging treasure, the charger's pins and the output cable that comes with it can be stored, which is portable and more practical. In addition, this product supports a maximum of 20W fast charging to meet the needs of iPhone 12 users.
The charging head network learned through disassembly that the switching power supply of this product adopts the Silan Micro SD8666QS + Maoruixin MK91736 scheme, with a high degree of integration. The mobile power supply has two built-in lithium polymer batteries, which use the South Core scheme to realize the battery cell charge and discharge, and is equipped with Hongkang lithium battery protection IC for protection, and equipped with thermistor for temperature monitoring. In addition, two Core Sea Technology protocol chips are used to control the USB interface and cable output voltage respectively.
13. Disassembly report: REMAX 20W 1A1C fast charge charger
REMAX this charger features a black PC housing with a matte finish, fixed pins and a 1A1C interface. Performance support Apple 2.4A, QC, AFC, FCP, PD and other protocols, with 5V3A, 9V2.5A, 12V1.5A three sets of voltage gears, to meet the mobile phone fast charging is not a problem.
The transformer inside the charger is glued and reinforced, and the output end is equipped with a protocol board, a built-in MK91736 synchronous rectifier chip of Mao Ruixin, and a cloud silicon semiconductor protocol, and the input and output filtering is carried out by Chengxing electrolytic capacitor and Yiyang Wanjingyuan solid capacitor.
14. Disassembly report: KEERDA Zhidian Electronics 30W 1A1C fast charger
This PD fast charger of Zhidian Electronics adopts a straight board shape design, the surface of the fuselage is frosted, and it can be equipped with a variety of specifications of feet. 1A1C interface and single C port optional, support QC, AFC, FCP, SCP, PD and PPS fast charging protocol, the overall compatibility is good. The charger supports Huawei 22.5W fast charging, and the actual test can also charge the iPhone 12 series mobile phone at 20W full speed, which is highly practical.
This charger adopts the switching power supply composed of Depp micro main control chip and Maoruixin synchronous rectifier chip, and uses the cloud silicon semiconductor chip XPD738 to control the 1A1C dual-port output or single-C port output.
15. Disassembly report: air-J 18W 1A1C fast charger
This 18W fast charger features a square-shaped design with foldable AMERICAN feet and a 1A1C output connector. USB-C supports QC, AFC, FCP, PD3.0 fast charging protocol, with 5V2.5A, 9V2A, 12V1.5A voltage gear, can meet the daily fast charging needs of mobile phones; in addition, USB-A port supports Apple 2.4A protocol, you can use it to charge Apple iPhone and other devices.
The dismantling of the charging head network found that this charger adopts the MK2687+MK91736 fast charging scheme of Maoruixin, which has high integration, simplified circuit and improved efficiency, and has the advantages of high reliability and comprehensive protection. In addition, the output protocol chip adopts Cloud Silicon Semiconductor XPD636 for controlling the interface output voltage, and the chip has passed USB PD3.0 certification and has reliable performance.
16. Disassembly report: WEMISS mini 20W PD fast charger
WEMISS This 20W charger is mainly small, portable and 20W fast charging, with PPS voltage gear, the overall compatibility is good. The charger plus cable is very cheap, it can be said that it is very cost-effective. The charging head network learned through disassembly that the PCBA module is an I-shaped structure, in addition to glue reinforcement, primary filter capacitors have been insulated, and the details are exquisite. The charger adopts the Biyi micro master control, and at the same time applies the MK91738 synchronous rectifier chip of Maoruixin, and also adopts the PD certification protocol chip of Yunsi Semiconductor, and the whole solution is also very reliable.
17. Disassembly report: Rapoo Mini 20W PD fast charge charger
Leibai mini 20W PD fast charge charger adopts PC flame retardant material white shell, the fuselage surface is all matte treatment with 5V3A, 9V2.22A, 12V1.67A three sets of standard voltage gears, supporting the maximum 20W PD fast charging, designed for iPhone 12. This charger switching power supply adopts Silan micro-main control + Mao Ruixin MK91736 high-integration scheme, the output protocol chip adopts Silan micro-protocol, the output adopts solid capacitor filtering, and the overall material mainstream.
18. Disassembly report: AUKEY 20W mini PD fast charger
The AUKEY 20W PD fast charger achieves up to 20W of output power through a cleverly structured layout in a small space, which is nearly 3 times higher than Apple's original 5W charger. In addition to supporting 20W PD fast charging, this charger is also compatible with a variety of mainstream fast charging protocols, using a variety of different brands of mobile phone fast charging, a wide range of applications.
The charger adopts a structure of four PCB board combinations to make full use of space, and in terms of materials, it adopts the MK91738 highly integrated synchronous rectifier chip of Onbao and Maoruixin high integration to minimize the number of peripheral components and make the miniaturization of the charger possible.
19. Disassembly report: Hailutong 18W USB PD fast charger
Hailutong 18W fast charger internally adopts a switching power supply wide range output, and the secondary protocol chip controls the output voltage typical architecture. The AC-DC step-down part adopts the highly integrated power supply main control chip and the synchronous rectifier chip MK91736 with built-in MOS design of Maoruixin, which is a simplified circuit design and is conducive to optimizing product costs.
20. Disassembly report: Damai 20W USB PD fast charger
Damai 20W PD fast charger is very compact overall, the shape tends to be small square, the surface of the fuselage shell is matte treatment, the output top surface is slightly convex and the edge is beveled design, and the input end is equipped with fixed pins. The charger supports QC, AFC and PD3.0 fast charging, supports 9V2.22A and 12V1.67A output, and is mainly a fast charger designed for iPhone 12.
The charger uses a combination of four PCB boards to make full use of space in order to stabilize the internal structure. In terms of materials, silan micro-master control and Maoruixin MK91736 high-integration power supply chip are selected to minimize the number of peripheral components and make the miniaturization of the charger possible.
21. Disassembly report: Hailutong 20W PD fast charger
Hailutong 20W PD fast charge charger body is small and round, fully meet the requirements of consumers for small size and have a good feel in use, the input terminal is equipped with mainstream fixed pins. This product supports QC2.0/3.0, AFC, FCP and PD3.0 fast charging protocols, with 5V3A, 9V2.25A, 12V1.75A three sets of fixed voltage gears, it can be said that it is specially designed for the iPhone 12.
This charger adopts the popular multi-PCB board combination soldering design and uses the highly integrated synchronous rectifier chip of Maoruixin MK91736, which can greatly reduce the size of the charger and bring a very mini body.
22. Disassembly report: Nokia 20W PD fast charger
Nokia 20W charger body is very simple, straight board shape design can be said to be very traditional, but the heat dissipation is also relatively better. The product supports Apple 2.4A, QC, AFC, FCP, PD3.0 and other protocols, with 5V3A, 9V2.22A, 12V1.67A three sets of voltage gears, can well meet the iPhone 12 series of new machine fast charging needs.
The charger adopts Shengting micro main control chip and Maoruixin MK91736 synchronous rectifier core solution, and the protocol chip is from Yunsi Semiconductor, and the overall solution integration is very high, effectively reducing peripheral devices and reducing costs.
Charging head net summary
As a young domestic semiconductor company, Maoruixin mainly focuses on the power chip market, based on the leading high-voltage BCD simulation process platform, Maoruixin has rapidly developed and mass-produced a variety of industry or domestic leading phenomenon-level power management chip series. For example, 115V CCM synchronous rectifier controller with 10ns ultra-fast shutdown delay, 120V high-side and low-side drivers with 4A Source/Sink drive current, synchronous buck converter with standby less than 100μA, AC-DC PWM chip with 110V voltage level, industry's minimalist 6-pin package ganide direct drive controller, and ganium nitride master chip.
Maoruixin not only has a rich power supply product line, but also has unique features in chip positioning and chip performance, which can really help power engineers solve many problems in product development. Because of this, Maoruixin's power chip has a wide range of applications in consumer power products, and also has a fairly good market feedback, which has been recognized by many well-known brands and power supply manufacturers.
If you need more product information, you can contact The original factory or agent of Maoruixin.