With the popularization of various intelligent mobile terminals, the demand for high-precision battery power is becoming increasingly widespread. The battery meter chip, as an important component of the battery pack protection board, has now become the focus of attention for various terminal manufacturers and battery pack factories. In addition to displaying the power level, the power meter chip also needs to implement accurate fast charging configuration strategies, reliable alarm interrupt mechanisms, and stable cell health estimation. With the popularization of fast charging, terminal applications equipped with electricity meters are gradually penetrating from the high-end market to the mid to low-end market.
TCB561 is an electricity meter product independently developed by Taisi Micro, optimized and designed based on market development needs and trends. It strives to achieve cost optimization while meeting performance requirements, providing a cost-effective solution for the widespread application of electricity meter chips.
Typical Applications of Single String Lithium Batteries
Main features of TCB561:
Support for single string lithium battery power calculation
High precision electricity meter based on battery status
• Proprietary TinyGaugeTM algorithm for high-precision power estimation
Minimum 0.5m Ω sampling resistor, capable of supporting higher fast charging current (24A and above)
Current measurement accuracy: ± 3mA (Current ≤ 1A), 0.5% (Current>1A)
On chip/off chip temperature sensor, supporting 10K or 100K external NTC resistor
100KHz/400KHz I2C communication interface
Support 1.2V or 1.8V I2C interface level
Support for SHA-256 authentication algorithm
• Tinywork ® Peripheral linkage mechanism, with an average power consumption as low as 60uA
VBAT working voltage as low as 2V
• Encapsulated WLCSP12 (1.98mm x 1.30mm x 0.415mm)
Working environment temperature TA: -40~85 ° C
The main advantages of TCB561 are:
WLCSP12 packaging: With advantages such as small size, light weight, small spacing, and small thermal resistance, it can improve device integration and increase reliability under high temperature and high power conditions;
High precision RSOC estimation: under normal and high temperature conditions, the RSOC accuracy of the discharge range is ≤ 3%; Under low temperature conditions, the RSOC accuracy of the discharge range is ≤ 5%;
High precision ADC measurement:
Voltage accuracy: (-20 ≤ T ≤ 0 ℃, Er ≤ ± 3mV; 0 ℃ ＜ T ≤ 60 ℃, Er ≤ ± 2mV);
Current accuracy: (-20 ≤ T ≤ 60 ℃, I ≤ 1A, Er ≤ ± 3mA; I ＞ 1A, Er ≤ 0.5%);
Temperature: (Er ≤ ± 3 ℃);
Support current sampling resistors as low as 0.5m Ω: In today‘s consumer electronics market, applications mainly focused on mobile phones/laptops are increasingly demanding charging rates. A current sampling resistor with a lower resistance value causes less heat change when passing through a large current. TCB561 can support fast charging current of 24A and above.
Accurate cut-off voltage point estimation: The remaining capacity is estimated using the TinyGaugeTM algorithm, and the voltage point with RSOC of 0% is accurately located. Compared with the preset discharge cut-off voltage value, the error between the two is less than 50mV, accurately and stably discharging the expected capacity of the battery cell.
• Low power consumption and high efficiency: TCB561 adopts advanced Low-power electronics, which can reduce energy consumption, extend battery life and improve energy utilization efficiency while maintaining high performance. This is of great significance for manufacturers pursuing sustainable development and environmental protection.
Design tool support:
Taisi Micro self-developed upper computer tools can be combined with third-party calibration tools to achieve rapid product development and mass production.
Taisiwei is always committed to providing customers with innovative solutions and high-quality products. The release of TCB561 has promoted and improved the development of the Taisi micro lithium battery BMS product line. By deeply analyzing battery characteristics and combining with the proprietary TinyGaugeTM power calculation method, it is possible to estimate battery power, evaluate battery health status, and alert battery abnormal risks through an alarm mechanism, bringing a safe and beautiful user experience to end users. At the same time, Taisi Micro supports further customization and development based on the TCB561 chip, meeting the diverse needs of different customers.
Taisi Micro has opened a software and hardware platform and various tools for chip evaluation, testing, and production of TCB561, providing one-stop services. Welcome to sales@tinychip.com.cn Request detailed information and information.
About Taisiwei
Shanghai Taisi Microelectronics Co., Ltd. was established in Zhangjiang, Shanghai in 2019 and is a leading supplier of high-performance specialized MCU chips in China. The company focuses on the research and development of various high-performance analog-to-digital hybrid chips, covering multiple fields such as automobiles, healthcare, industry, and consumption, and has gained recognition and product introduction from many top customers in related application fields. The company has currently obtained high-tech enterprise certification and the title of specialized, refined, and new small and medium-sized enterprise.
Taisiwei has made a deep layout in the aspect of car gauge chips, and has successfully passed the ISO26262 ASIL-D system certification and ISO9001 quality system certification of car gauge Functional safety. Many products have obtained AEC-Q100 car gauge chip certification, and accumulated dozens of invention patents. At present, six product series have been formed, including signal chain, battery management, power management, car regulation touch control, car lighting system, and motor drive control, forming a matrix product lineup.
Tai Si Micro always adheres to creating innovative and market demand products, creating good products, a simple and easy-to-use ecosystem, and stable and mature vertical solutions, striving to become the backbone of China‘s semiconductor development and the backbone of entering the international semiconductor market.
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