Li-ion Battery Management Solution

Renesas' lithium-ion battery management (Li-ion) solution is built around a battery management IC that offers a low-power microcontroller (MCU) and high-performance analog front-end (AFE) in a single package, along with an evaluation board, sample code and other tools to support the development of safe, secure and high-performance Li-ion batteries.

Target applications for Li-ion battery management solutions include notebook and laptop computers, power tools, cordless vacuums, and motor-assisted bikes.

Safety Control

Enable high battery pack safety with multiple fail-safe detection functions

• Built-in self-diagnostic functions using an integrated MCU and AFE
• Ultra-low power storage mode
• Over/Undervoltage
• Overcurrent
• Over/Under temperature
• FET control during failure
• Fuse blow

Capacity Calculation

Continuous high accuracy battery capacity detection

• Delta-Sigma analog-to-digital converter optimized for current, voltage and temperature measurement
• Adjusts remaining capacity calculation dynamically for aged and deteriorated cells
• Capacity calculation with built-in learning
• Current and voltage calibration functions
• Battery history and record keeping function

Comprehensive Development Environment

Starter kits with an evaluation board (EVB), sample code and user's manual for easy evaluation

• Evaluate the device performance and operating behavior using the EVB; includes an E1 connector for easy on-chip debugging
• Available sample program source code for all basic battery management functions
• Communication with PC via I²C Bus
• GUI I/F displays the battery parameter status such as voltage, current and temperature

For a starter kit, contact your local sales representative or distributor.

System Block Diagram

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