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STMicroelectronics STEVAL-L99615C Evaluation Kit incorporates an expansion board containing the L9961 and the NUCLEO-G071RB STM32 Nucleo-64 development board. The evaluation kit demonstrates easy integration of ST technology for BMS applications. The STEVAL-L99615C establishes the characteristics of the L9961. These include monitoring up to five Li-ion battery cells in a series configuration, and communicating with the STM32G071RB microcontroller, via an I2C interface.
The expansion board has been specially developed to be stacked on the NUCLEO-G071RB development board using the morpho connectors. Furthermore, the board embeds a power connector to connect to a 5-cell battery pack or, instead, an external power supply to emulate the battery pack.
A dedicated software package, including a firmware program for the STM32G071RB microcontroller and a GUI for the PC (STSW-L99615C), has been released, allowing users to benefit from the demonstration.
Major characteristics represented by STSW-L99615C are cell voltage and stack voltage monitoring, stack current monitoring, temperature conversion via external NTC, OV, and UV thresholds management.
