ALLPCB
The rapid evolution of AI glasses has shifted from basic interactions to lightweight, intelligent, and stylish designs. According to Sigmaintell, the global AI glasses market is projected to reach 5.7 million units in 2025, reflecting a 110% year-on-year surge. Over the next five years, the market is expected to grow at a 19% compound annual rate, surpassing 13.6 million units, marking a transition from concept validation to large-scale commercial adoption.
The widespread adoption of smart devices like AI glasses, smartphones, tablets, laptops, and drones underscores the importance of optimized power management to enhance product competitiveness. Accurate battery monitoring and management are critical for extending battery life, ensuring device safety, and improving user experience.
BMP561 Single-Cell Battery Gauge Solution
To address the power management industry¡¯s need for high precision, low power consumption, and extended battery life, the BMP561 single-cell battery gauge chip offers a reference solution for single-cell battery monitoring. This solution enables precise battery status monitoring, extends battery lifespan, enhances safety, supports intelligent charging management, and facilitates system integration and optimization. It simplifies hardware design, reduces bill of materials costs, and improves system reliability.
The BMP561 solution features low power consumption, high reliability, and cost-effectiveness. It supports single-cell battery monitoring, battery capacity estimation, and I2C communication, making it suitable for applications such as AI glasses, smartphones, tablets, laptops, smart bands, smartwatches, and POS terminals.
Solution Components
The solution comprises two main components:
- BMP561 Chip: Integrates high-precision ADC for current and voltage sampling, enabling accurate battery capacity estimation.
- Protection Circuit: Provides under-voltage, over-voltage, over-current, and short-circuit protection functions.
Solution Advantages
- High Precision: Features a software-based high-precision Coulomb counter with integrated 16-bit voltage and current ADCs for synchronous sampling and accurate capacity estimation.
- Low Power Consumption: Supports multiple energy-saving modes, with a deep sleep mode consuming 18¦ÌA at 25¡ãC, combined with an intelligent sleep mechanism to significantly extend battery life.
- High Reliability: Incorporates adaptive algorithms tailored to battery characteristics, optimizing sampling accuracy, power efficiency, and state-of-charge precision.
BMP561 Chip Features
- 32-bit Arm? Cortex?-M0+ core for real-time battery status processing and capacity updates without requiring an external MCU.
- Dual 16-bit ADCs for simultaneous voltage and current sampling to support algorithmic calculations.
- I2C communication for data interaction with external devices.
- HMAC-SHA256 authentication responder for secure battery pack monitoring.
Development Ecosystem
The BMP561 single-cell battery gauge is a critical component of battery management systems, driving advancements in intelligent, high-precision, and reliable battery management technologies. The solution includes a visualization tool for parameter tuning, calibration, and firmware upgrades (both online and offline). It is supported by a comprehensive development ecosystem, offering technical documentation, software and hardware development tools, and localized support to accelerate engineering development and product commercialization.
