Preface
Maoruixin Technology Co., Ltd. is a company dedicated to the design, research and development, sales and technical services of high-performance analog and mixed-signal integrated circuits, founded by a team of senior experts with rich experience in world-class semiconductors, and its products are mainly positioned in high-performance power management, automotive electronics, power drive modules, motor drives and sensor technology and other applications, and have achieved outstanding results in the fields of communications, industrial and consumer power supplies. At present, the company has accumulated a large number of intellectual property rights in advanced processes, and has obtained 27 authorized patents (17 invention patents and 10 utility models), and 42 integrated circuit layout rights.
Recently, when the charging head network sorted out the dismantling cases about Moruixin, it was found that the Moruixin MK2697 series main control chip has been supplied by Baseus, Acer, Realme, Nubia and many other well-known domestic and foreign manufacturers.
茂睿芯主控芯片MK2697
The switching power supply MC Marui MK2697 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 Maurexin's proprietary drive technology to simultaneously optimize the voltage stress of the primary and secondary power tubes. The operating frequency is up to 200kHz, and it supports the design of PD fast charging source with high frequency and small size.
For energy efficiency requirements, the MK2697 adopts adaptive multi-mode due to the multiple output voltages of PD/fast charging. It adjusts the QR mode to work at different frequencies under different loads and different outputs. At light loads, it will work in burst mode to improve efficiency.
MK2697 provides comprehensive protection functions, including output OVP, OPP, VCC, OVP, BROWN-IN/OUT, secondary SR short circuit protection, PIN OPEN/SHORT protection and other rich protection functions.
Related Reading:
1. Dismantling report: Baseus 65W 2C1A gallium nitride charger
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3. Teardown report: Aisawate 65W 2C1A GaN fast charger
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5. Dismantling report: UOCO. 45W dual USB-C GaN charger
6. Dismantling report: Baseus 67W 2C1A+HDMI multi-function gallium nitride desktop charger
7. Teardown report: realme 67W 1A1C dual-port fast charging charger
8. Teardown report: SYNCWIRE 30W GaN charger
9. Dismantling report: Tlock hard box 65 gallium nitride gaming socket
10. Teardown report: Acer 65W 1A1C GaN charger
11. Dismantling report: Gushi 30W 1A1C gallium nitride charger
12. Dismantling report: Momis 65W 3C2A gallium nitride travel charger
茂睿芯主控芯片MK2697A
Morrex MK2697A, a QR PWM controller optimized for PD/fast charging applications. Its wide VCC operating voltage range (9V-90V) allows it to cover the PD/PPS output range from 3.3V-23V without the need for additional windings or linear step-down circuitry, and can be switched up to 130kHz.
MK2697 is designed for energy efficiency requirements, and adopts adaptive multi-mode due to the multiple output voltages of PD/fast charging. It is adjusted to work in DCM/QR under different loads and different outputs. At light loads, it will work in burst mode to improve efficiency.
MK2697A provides comprehensive protection functions, including output OVP, OPP, VCC OVP, BROWN-IN/OUT, secondary SR short circuit protection, PIN pin OPEN/SHORT protection, etc.
Related Reading:
1. Dismantling report: Nubia Dabai 20W dual-port gallium nitride charger
2. Dismantling report: UOCO. 65W 2C1A GaN Fast Charger
3. Dismantling report: Gushi Technology 30W 1A1C dual-port fast charging charger
4. Dismantling report: Opaiqi 65W 2C1A super silicon fast charger HN251A
5. Dismantling report: Huakesheng mini 33W fast charging charger
6. Dismantling report: Huakesheng mini 30W gallium nitride fast charging charger
7. Dismantling report: Quanyouxing 65W 2C1A gallium nitride charger
8. Dismantling report: Baseus 30W 2A1C fast charging socket
9. Dismantling report: Ruiliang mini 33W gallium nitride charger
10. Dismantling report: Baseus 40W 2C1A gallium nitride desktop socket
11. Dismantling report: Yisheng Electronics 65W 2A2C gallium nitride extension cord socket
13. Dismantling report: Baseus 65W 2C1A gallium nitride charger
茂睿芯主控芯片MK2697G
The MK2697G is a high-frequency QR AC-DC PWM controller with SOT23-6 extremely small package, Vcc withstand voltage of 110V, support 9-90V Vcc power supply, no external voltage regulator circuit, reduce the layout space, and make it more flexible. The patented drive technology supports direct-drive enhanced GaN power devices while optimizing SR Vds stress, effectively improving product efficiency and power density.
The 200KHz operating frequency can make full use of the advantages MK2697G of GaN switches to improve efficiency and reduce the size of the adapter with an adaptive multi-mode feature that meets the energy efficiency requirements of PD fast charging at different output voltages, and the 200KHz operating frequency can make full use of the advantages of GaN switches.
The MK2697G has protection functions such as output overvoltage, overpower, VCC overvoltage, input overvoltage protection, synchronous rectifier short-circuit protection, etc., and is suitable for USB PD chargers and high power density power supply applications.
Related Reading:
1. Dismantling report: Philips 30W 1A1C GaN charger
2. Dismantling report: UOCO. 40W dual USB-C GaN charger
3. Dismantling report: Pilot Jinxiang multi-functional gallium nitride desktop magnetic charger M230
4. Dismantling report: ifory Mini 30W GaN charger
5. Dismantling report: ON 65W 1A1C gallium nitride charger
6. Dismantling report: Gushi 45W gallium nitride charger
7. Teardown report: NITRIDE 65W 1A1C ultra-thin gallium nitride charger
Summary of the charging head network
The MK2697 series chip launched by Moruixin is a main control chip optimized for PD fast charging, which can meet the wide voltage output of PD/PPS fast charging with one chip, support built-in multi-mode automatic switching, high efficiency, and streamlined peripherals to meet the needs of fast charging with high power density.
At this stage, MK2697 series chips have entered the supply chain of major mobile phone and accessories manufacturers such as Realme, Baseus, Acer, and Gushi, and the product quality is obvious to all, and the annual shipment volume is very considerable. In the future, Morui will continue to follow the needs of manufacturers and launch more high-performance power chips to effectively promote the development of the fast charging field.