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, Mo ruixin currently has 5 mass production product lines, namely synchronous rectification, driver, load switch, AC-DC, DC-DC. Two new product lines, PoE and PFC, were added in 2021 and are currently in the sample stage.
Maoruixin AC-DC power supply chip can be divided into three categories, gallium nitride fast charging dedicated primary side controller series, suitable for traditional silicon power devices primary side controller series, and secondary side synchronous rectifier controller series.
Among them, the special controllers for gallium nitride fast charging are all high-frequency QR quasi-resonant flyback architectures, and all support 110V power supply, and the maximum operating frequency is 130kHz and 200kHz.
In addition to the popular gallium nitride control chip, Maoruixin has also launched a series of PWM controllers suitable for silicon power devices, with three power supply specifications of 110V, 40V and 65V, and two packages, extrapolated MOS and built-in MOS, to meet the application needs of different scenarios.
In terms of synchronous rectification, Maoruixin has two types of products: external MOS and built-in MOS. It is worth mentioning that its synchronous rectifier controller takes the lead in applying 10ns ultra-short shutdown delay technology, which effectively avoids DCM misleading pass, and has a unique starting clamping mechanism, which has been favored by industry customers once launched.
Primary side (Gallium nitride controller)
At present, Maoruixin has launched a total of 5 gallium nitride controllers, one of which is a direct drive E-GaN gallium nitride controller, the package method is SOT23-6, which is the first in the industry to launch such a small size direct drive controller.
It is worth mentioning that Maoruixin also released two gallium nitride sealing devices, which seal the controller, driver, and gallium nitride together, which greatly improves the system integration, improves the stability of product development, and simplifies the circuit design.
MK2697G
MK2697G is a high-frequency QR AC-DC PWM control chip using SOT23-6 extremely small package, Vcc withstand voltage 110V, support 9-90V Vcc power supply, no need for external voltage regulator circuit, reduce the layout space, more flexible use. Using patented drive technology, GaN power devices can be directly driven and SR Vds stress can be optimized, which effectively improves product efficiency and power density.
The MK2697G has adaptive multi-mode characteristics to meet the energy efficiency requirements under different output voltages of PD fast charge, and the 200KHz operating frequency can make full use of the advantages of gallium nitride switch tubes to improve efficiency and reduce adapter volume.
The MK2697G has protection functions such as output overvoltage, overpower, VCC overvoltage, input overvoltage protection, and synchronous rectifier short circuit protection, which is suitable for USB PD charger and high power density power supply applications. The MK2697 series has been delivered to a large number of customers for mass production.
Application Cases:
1. Maoruixin launched the gallium nitride direct drive controller, and the six-pin package set a new industry record
2. Disassembly report: Aisawate AISHA Watt 65W 2C1A Gallium Nitride fast charger
3. Dismantling report: UOCO. 65W 2C1A Gallium Nitride Fast Charge Charger
4. Disassembly report: Huakesheng mini 30W Gallium nitride fast charger
5. Disassembly report: Huakesheng mini 33W fast charger
6. Disassembly report: Gushi Technology 30W 1A1C dual-port fast charger
MK2697
The MK2697 is a QR PWM controller optimized for PD/fast charging applications with a wide VCC operating voltage range (9V-90V) that 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 Maoruixin's independent intellectual property rights to optimize the voltage stress of primary and secondary power tubes synchronously. Up to 200kHz operating frequency, supporting high frequency small size PD fast charging source design.
The MK2697A provides comprehensive protection functions, including output OVP, OPP, VCC OVP, BROWN-IN/OUT, and also provides secondary side SR short circuit protection, PIN pin OPEN/SHORT protection, etc.
2, new design, breaking through the volume limit, Beth 65W GaN3 Pro Gallium Nitride charger disassembly
3. Disassembly report: Opage 65W 2C1A super silicon fast charger
MK2787/MK2788
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.
1. Push up the power density, Maoruixin released the GaN seal fast charging chip MK2787/MK2788
Original side
For the fast charging application of traditional silicon power devices, Maoruixin has launched a total of 9 PWM controllers, two of which adopt built-in MOS design, which is suitable for low-power PD fast charging applications and streamlines the peripheral circuit. Seven other models feature an extrapolated MOS design with a variety of different switching frequencies. At present, MK2687 is more widely used in the field of fast charging source
MK2687
Maoruixin is a PD fast-charging special PWM chip, its 110V Vcc withstand voltage optimization PD auxiliary power supply design, PD PPS 3.3V-20V output change process, no need for additional voltage regulator circuit.
MK2687 self-patented technology can significantly reduce the voltage spike of the original secondary power tube at boot time and improve system reliability; MK2687 is a PWM IC with integrated multi-mode (CCM/DCM/QR) operation mode, multi-segment frequency curve, effectively improving system efficiency. In the six months since the launch of the chip, mass production has been achieved in many customers.
The MK2687 provides comprehensive protection functions, including output OVP, OPP, VCC OVP, BROWN-IN/OUT, secondary side SR short circuit protection, PIN pin OPEN/SHORT protection, and input voltage OVP protection. SOT23-6 package is available.
1. Disassembly report: air-J 18W 1A1C fast charger
2. Disassembly report: Beth 20W super silicon fast charger Pro version
3. Disassembly report: Beth 20W 1A1C fast charger
4. Disassembly report: Beth 30W 2A1C fast charger
Secondary side
It is understood that at present, Maoruixin has launched a total of 12 synchronous rectifier controllers suitable for USB PD fast charging applications, in high-power fast charging applications, you can choose to extrapolate MOS series, and the chip supports a switching frequency of 600kHz, which can be used for gallium nitride fast charging development; the synchronous rectifier chip of the internal help MOS helps the small power fast charging source product to achieve a small size design.
MK1716
The MK1716 integrates a secondary synchronous rectification controller and a 16mΩ/100V synchronous rectification MOS. The MK171X series is a high-performance synchronous rectifier 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 MK171X adopts a 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.
1. Disassembly report: KEERDA Zhidian Electronics 30W 1A1C fast charger
2. Disassembly report: MSH Meishun and 30W USB PD fast charger
MK1718
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.
MK91736
MK91736 is a secondary synchronous rectifier chip of Maoruixin, MK91736 built-in 16mΩ synchronous rectifier tube, support 200KHz switching frequency. Ideal for chargers where high efficiency is required and compatible with CCM, DCM and QR modes.
MK9173X 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 at the positive end, there is no need for extra auxiliary winding; 10ns off delay and up to 4A pull-down current help the system work reliably in CCM mode, effectively reducing the CCM voltage spike, making the 60V MOSFET can easily get 12Vout applications; the opening and shutdown mechanism of independent intellectual property rights. The on-time of the external drive MOSFETs can be maximized for the highest possible efficiency. And it detects the DCM ringing independently to prevent false opening.
1. Disassembly report: IDMIX Damai MFI certification three-in-one mobile power supply CH07
2. Disassembly report: REMAX 20W 1A1C fast charger
3. Disassembly report: Leibai mini 20W PD fast charger
4. Disassembly report: Hailutong 18W USB PD fast charger
5. Disassembly report: Hailutong 20W PD fast charger
6. Disassembly report: Nokia 20W PD fast charger
MK91738
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.
MK9173X 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 at the positive end, there is no need for extra auxiliary windings; 10ns off delay and up to 4A pull-down current help the system work reliably in CCM mode, effectively reducing the CCM voltage spike, making the 60V MOSFET can easily get 12Vout applications; the opening and shutdown mechanism of independent intellectual property rights. The on-time of the external drive MOSFETs can be maximized for the highest possible efficiency. And it detects the DCM ringing independently to prevent false opening.
1, 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
2. Disassembly report: WEMISS mini 20W PD fast charger
3. Disassembly report: AUKEY 20W mini PD fast charger
4. Disassembly report: Damai 20W USB PD fast charger
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.