Complete battery pack monitoring, balancing, and protection system
Improve industrial BMS performance
Boost battery lifetime and safety in industrial and consumer applications
Boost battery lifetime and safety in industrial and consumer applications
By integrating a high-precision 12-bit ADC, the L9961 monitors individual cell voltages, stack voltage and cell temperature. A dedicated 16-bit high-accuracy current-sense amplifier (CSA) monitors battery stack current enabling the internal Coulomb counter for SOC/SOH estimation. Integrated balancing MOSFETs allow balancing of individual cell. Advanced diagnostics, protection FETs pre drivers and fuse driver, helps battery protection.
Cordless power tools
Small appliances
Drones
Medical appliances
Advantages of using our L9961 solution
L9961: chip for industrial battery management applications up to 5 cells
L9961: chip for industrial battery management applications up to 5 cells
- Best-in-class current consumption in low power mode
- Fuse driver for a quick reaction to critical faults
- Configurable HS/LS pre drivers.
- Internal MOSFET for cell balancing
The L9961 comes with a complete development ecosystem designed to reduce design times and simplify implementation. From evaluation boards to ready-to-use software packages, we provide everything you need to get started quickly and efficiently.
Software GUI for L9961 evaluation board
Ready-to-use GUI showing L9961 device performances
- Cell monitoring
- Coulomb counter
- Switch control
- Diagnostics
Expansion kit with L9961 board and STM32G0 Nucleo-64 development board
Complete system for quick evaluation of device features
- L9961 BMS IC
- Pack relay configuration
- NUCLEO environment
- Cell monitoring connector
- Battery simulation stage
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Software package for L9961 industrial battery management system
Software package with standalone firmware driver and application examples
- Coulomb counting mechanism for SOC estimation
- 5-cell voltage, current, temperature and stack voltage monitoring
- Applications examples
- Passive battery cell balancing for cell energy equalization
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L9961: ST’s 1st battery management IC with configurable high- and low-side protector
L9961: ST’s 1st battery management IC with configurable high- and low-side protector
The L9961 is our first battery monitoring and balancing IC for industrial applications that offers a high-side / low-side configurable pre-driver and a fuse driver. The integration simplifies designs and reduces costs by lowering the number of external components without compromising features. Avid readers of the ST Blog know the L9963E well, as the automotive cousin of the L9961 has played an essential role in numerous electric cars.
Webinar
Discover ST's latest 3-5 cell battery management systems solution perfect for a wide range of industrial and consumer products.