ForewordChuangxin Micro is an integrated circuit design company focusing on the R&D and sales of high-precision, low-power battery management and high-efficiency and high-density power management chips, the company's founding team comes from a world-renowned IC design company, and the core team has more than 15 years of experience in battery management chip design, R&D, production and testing. At present, the battery management chip has covered all product series and application fields from 1 to 14 cells, from full protection to secondary protection, and has cooperated with many manufacturers. Chuangxin microchipWhen sorting out the dismantling cases of previous years, the charging head network found that the battery protection chips, main control chips and synchronous rectifier chips of Chuangxin Micro have entered the ** chain of well-known domestic and foreign manufacturers such as Anker, Greenlink, Samsung, and Transsion, which are detailed for you below. Battery protection chipsChuangxin Micro CM1003-SBD
Chuangxin CM1003-SBD is a single-cell lithium battery protection chip, which supports high-voltage lithium battery applications and has an overcharge protection voltage of 4475V, with 20mV accuracy, over-discharge protection voltage of 276V, 50mV accuracy, SOT23-6 package. Related reading: 1. Dismantling report: Anker 5000mAh magnetic wireless charging power bank 2. Dismantling report: Anker **maggo magnetic power bank with bracketChuangxin Micro CM1003-Z
Chuangxin CM1003-Z is a single-cell rechargeable lithium battery protection chip, the chip has a built-in high-precision voltage detection circuit and a delay circuit, which realizes the overcharge, overdischarge and overcurrent protection of the battery by detecting the voltage and current of the battery, and has a 25mV overcharge detection accuracy. Related reading: 1. Dismantling report: Anker 5000mAh 30W 2-in-1 energy bar Pro2, dismantling report: Anker MFI certified 5000mAh capsule power bankChuangxin Micro CM1004-BLD
The chip of silk screen printing 4BL is Chuangxin Micro CM1004-BLD, which is a single-cell battery protection chip with external current detection resistor, built-in high-precision voltage detection function, and the overcharge protection voltage is 457V with an accuracy of 20mV. The over-discharge protection voltage is 208V with an accuracy of 50mV. The built-in high-precision sampling resistor current detection circuit can eliminate the error of the internal resistance detection of the traditional protection chip using the battery protection MOS, and adopts DFN19*1.6-6L package. Related reading: 1. Teardown report: Infinix Note 11 mobile phoneChuangxin Micro CM1004-BKD
The chip of silk screen printing 4BK is Chuangxin Micro CM1004-BKD, this chip has a high-precision voltage detection function, and the overcharge protection voltage is 453V with an accuracy of 20mV. The over-discharge protection voltage is 235V with an accuracy of 50mV. The built-in high-precision sampling resistor current detection circuit can eliminate the error of the internal resistance detection of the traditional protection chip using the battery protection MOS, and adopts DFN19*1.6-6L package. Related reading: 1. Teardown report: Infinix Note 11 mobile phoneChuangxin Micro CM1020
Chuangxin CM1020 series is a high-precision protection chip for 2 strings of lithium batteries, with an accuracy of 25mv high-precision overcharge detection, support 2-stage discharge overcurrent protection, support charging overcurrent protection, and have extremely low standby current consumption, used for overcharge, over-discharge, discharge charge over-current and short-circuit protection functions of the battery pack, using SOT23-6 package. Related reading: 1. Dismantling report: MIJIA Mijia USB-C inflatable treasure 1S2, dismantling report: Jisu 10000mAh 30W fast charging power bank 3, teardown report: Samsung 10000mAh 25W fast charging power bank 4, teardown report: Roma 20000mAh 30W fast charging power bank PAC20PRO5, teardown report: Cool State Branch 10000mAh 30W fast charging power bankChuangxin Micro CM1022
Chuangxin Micro CM1022 series chip is a protection chip dedicated to 2 strings of lithium iron phosphate batteries, and the chip has built-in high-precision voltage detection and current detection circuits. By detecting the voltage, charge and discharge current and temperature information of each battery, the overcharge, overdischarge, discharge overcurrent, short circuit, charging overcurrent and temperature protection functions of the battery pack are realized, and all the protection delay functions are built into the chip. Related reading: 1. Dismantling report: Mijia mini fascia gunChuangxin micro CM1031
Chuangxin CM1031 series is a protection chip dedicated to 3 strings of lithium batteries or polymer batteries, with built-in high-precision voltage detection circuit and current detection circuit, by detecting the voltage, charge and discharge current and temperature of each battery, etc., to achieve battery overcharge, overdischarge, discharge overcurrent, short circuit, charging overcurrent, overtemperature and other protection functions, and can adjust the overcharge, overdischarge, and overcurrent protection delay through external capacitors. Related reading: 1. Dismantling report: Baseus USB-C energy pump MEGA double-cylinder wireless inflatable treasureChuangxin Micro CM1051
Chuangxin CM1051 series is a protection chip dedicated to 5 strings of lithium-ion lithium iron phosphate batteries, with built-in high-precision voltage detection circuit and current detection circuit. By detecting the voltage, charge and discharge current and temperature and other information of each battery, the functions of battery overcharge, over-discharge, disconnection, low-voltage prohibition of charge, discharge over-current, short circuit, charging over-current and over-temperature protection are realized. Related reading: 1. Dismantling report: Qiaowei 50000mAh 65W digital display fast charging power bankChuangxin Micro CM1250Chuangxin micro CM1250 series is applied to 3 to 5 strings of 4The over-voltage protection chip of 2V lithium battery has a built-in high-precision voltage detection circuit and a delay circuit for the secondary protection of the rechargeable battery pack, and realizes the overcharge protection by detecting the voltage of a single battery. 
CM1250 series battery protection chip supports 25mV high-precision overvoltage detection, protection delay time is optional, and supports battery cell disconnection protection function, with CMOS output, N-groove or P-groove open and drain multiple protection state output modes, with high withstand voltage and low working current, improve reliability and extend the storage time of the battery pack. Related reading: 1. Dismantling report: Mofei Electric Wireless Handheld Mite RemoverChuangxin micro CM1270
Chuangxin CM1270 series is a secondary protection chip for rechargeable batteries, with built-in high-precision voltage detection and delay circuits, which provide overcharge protection for the battery pack by detecting the voltage of each cell in the battery pack. The CM1270 supports 6-7 string battery protection and is available in an MSOP10 package for secondary protection applications with multiple string battery packs. Related reading: 1. Dismantling report: ZEEKR 1200W mobile power bank 1200Chuangxin Micro CM1341-DAT
Chuangxin CM1341-DAT is a protection chip dedicated to 4 strings of lithium-ion lithium iron phosphate batteries, with built-in high-precision voltage detection circuit and current detection circuit. By detecting the voltage, charge and discharge current and temperature and other information of each battery, the functions of battery overcharge, over-discharge, equalization, disconnection, low-voltage prohibition of charge, discharge over-current, short circuit, charging over-current and over-temperature protection are realized. Related reading: 1. Dismantling report: Cuktech No. 15 electric energy column PB200P2, dismantling report: Cuktech No. 10 super electric energy barChuangxin Micro CM1351
Chuangxin CM1351 series is a protection chip dedicated to 5 strings of lithium-ion lithium iron phosphate batteries, with built-in high-precision voltage detection circuit and current detection circuit. By detecting the voltage, charge and discharge current and temperature and other information of each battery, the functions of battery overcharge, over-discharge, equalization, disconnection, low-voltage prohibition of charge, discharge over-current, short circuit, charging over-current and over-temperature protection are realized. Related reading: 1. Dismantling report: Greenlink 25000mAh 145W laptop power bank 2, Dismantling report: Cuktech No. 20 super power column P233, dismantling report: Greenlink**25000mAh 145W fast charging power bankChuangxin Micro CM1361
Chuangxin CM1361 series is a battery protection chip that supports the application of 6 strings of battery packs, and supports the battery balancing function. The chip has a built-in high-precision voltage detection circuit and current detection circuit, which can detect the voltage, current and temperature of each battery in the series battery pack, and carry out protection functions such as battery overcharge, overdischarge, charge overcurrent, discharge overcurrent, overheating and battery pack disconnection. Related reading: 1. Dismantling report: Anker Anker 140W 2C1A two-way fast charging power bank 2. Dismantling report: ZEEKR 1200W mobile power bank 1200Main control chipChuangxin Micro CM1764Chuangxin CM1764 is a high-performance power chip with multi-mode control, built-in 650V power MOSFET, which can be used for offline switching power supply within 20W. The CM1764 can operate in PWM, PFM, and Burst modes according to the input voltage, output voltage, and load control system to achieve optimal efficiency over the full voltage range and at all load sections.
The CM1764 has built-in patented jitter technology and frequency modulation control technology to simplify system EMI design. The CM1764 has built-in compensation and protection functions, such as input voltage compensation, inductance compensation, ramp compensation, over-current protection, overload protection, VDD over-voltage protection, over-temperature protection, etc., thereby simplifying the peripheral circuit, facilitating PCB layout and EMI design, improving the reliability and safety of the solution, and reducing the cost of the solution. The CM1764 is available in an SOP8 package and is suitable for applications up to 20W. Related reading: 1. Teardown report: SELORE Mini 20W PD Fast ChargerChuangxin Micro CM1765Chuangxin CM1765 is a high-performance SSR power supply chip with multi-mode control, built-in 650V power MOSFET, which can be used for offline switching power supply products within 20W. The CM1765 can operate in PWM, PFM, and Burst modes according to the input voltage, output voltage, and load control system to achieve optimal efficiency over the full voltage range and all load sections.
The chip has built-in patented frequency jitter technology and frequency modulation control technology to simplify system EMI design. CM1765 has a large number of built-in compensation and protection functions, such as input voltage compensation, inductance compensation, ramp compensation, over-current protection, overload protection, VDD over-voltage protection, over-temperature protection, etc., thereby simplifying the peripheral circuit, facilitating PCB layout and EMI design, improving the reliability and safety of the solution, and reducing the cost of the solution. Related reading: 1. Dismantling report: Jindian 20W PD fast charging charger 2, teardown report: Xinchenjia 20W 1A1C fast charging charger 3, dismantling report: Roma Shi mini 20W fast charging chargerChuangxin Micro CM1768Chuangxin CM1768 is a highly integrated multi-mode high-performance flyback power supply controller, which supports a wide operating voltage range and adaptive multi-mode control to achieve high-performance wide-range output. The CM1768 supports CCM and DCM operation modes, and supports valley turn-on to reduce losses.
The CM1768 integrates output overvoltage protection, power supply overvoltage protection, output overcurrent protection, output overload protection, short-circuit protection, synchronous rectification short-circuit protection, and overtemperature protection, with cycle-by-cycle current limiting, dynamic gate drive and soft-start, and is available in an SOT23 package. Related reading: 1. Teardown report: D-Power 33W 1A1C fast charging chargerSynchronous rectifier chipChuangxin micro CM1622Chuangxin micro synchronous rectifier chip CM1622 is used to replace the secondary rectifier diode of flyback switching power supply to reduce rectifier loss and improve system energy efficiency. The chip is capable of operating in multiple modes such as CCM, DCM, QR, etc., and is highly integrated, enabling synchronous rectification with virtually no need for redundant external components, simplifying PCB design and reducing BOM cost.
Chuangxin CM1622 integrates AC power supply, can support a wide output voltage range of 3V and 12V, is suitable for fast charging applications, and can support both negative and positive rectification to meet the different needs of customers. Related reading: 1. Dismantling report: Jindian 20W PD fast charging charger 2, teardown report: Xinchenjia 20W 1A1C fast charging charger 3, dismantling report: Roma Shi mini 20W fast charging chargerChuangxin Micro CM1632Chuangxin CM1768 is a highly integrated multi-mode high-performance flyback power supply controller, which supports a wide operating voltage range and adaptive multi-mode control to achieve high-performance wide-range output. The CM1768 supports CCM and DCM operation modes, and supports valley turn-on to reduce losses.
The CM1768 integrates output overvoltage protection, power supply overvoltage protection, output overcurrent protection, output overload protection, short-circuit protection, synchronous rectification short-circuit protection, and overtemperature protection, with cycle-by-cycle current limiting, dynamic gate drive and soft-start, and is available in an SOT23 package. Related reading: 1. Teardown report: D-Power 33W 1A1C fast charging chargerChuangxin Micro CM1621
Chuangxin micro secondary synchronous rectifier chip CM1621 integrates 60V withstand voltage, 15M conduction resistance synchronous rectifier tube, supports CCM, DCM and QR flyback applications, and has a green working mode. The maximum operating frequency is 150kHz, supporting both high-end and low-end applications. The CM1621 requires only one capacitor on the periphery, which is very compact. The output supports a wide range of voltages from 3 to 12V, which meets the needs of low-power USB PD fast charging. Related reading: 1. Teardown report: SELORE Mini 20W PD Fast ChargerSummary of the charging head networkAs a high-tech enterprise focusing on battery management and power management chips, Chuangxin's battery management chips can provide all-round protection functions for 1-14 strings of batteries, effectively improving battery life and reliability. The power management chip covers AC-DC chip, fast charging identification chip and synchronous rectifier chip. The mode of laying out two types of chips at the same time can provide manufacturers with more choices and a wider range of applications. At present, Chuangxin's chips have won unanimous praise from well-known domestic manufacturers such as Xiaomi, Samsung, Transsion, Anker, and Zeekr, and it is believed that more manufacturers will choose Chuangxin's chips to achieve efficient output in the future. Upcoming ExhibitionsShenzhen Chuangxin Microelectronics Co., Ltd. participated in the 2024 (Spring) Asia Charging Exhibition hosted by the charging head network, with a booth in B53, Area B, and welcomed to the exhibition site from March 20th to 22nd to exchange and negotiate.