STMicroelectronics EVL9965C-L/EVL99BM2C-L Promotional Boards

Introduction

The STMicroelectronics EVL9965C-L and EVL99BM2C-L promotional boards are evaluation platforms for developing and testing high-voltage battery management system (BMS) functions. They integrate the L9965C or L99BM2C devices to support current, charge, and isolation monitoring within battery-pack architectures.

Part Description

These evaluation boards are designed to help engineers assess battery monitoring and communication features used in high-voltage energy-storage systems. Depending on the board configuration, the platform integrates either the L9965C or L99BM2C component.

Key capabilities include:

• High-voltage battery-pack current monitoring
• Charge monitoring functions
• Isolation monitoring support
• Isolated daisy-chain communication
• Dual redundant current-sensing capability
• Analog input channels for external measurements
• Gate pre-driver outputs
• Optional SPI connectivity
• A practical platform for battery management system evaluation

The boards can be used to explore monitoring, control, communication, and diagnostic functions before implementing a custom BMS hardware design.

Applications

Potential applications include:

• High-voltage battery management system development
• Battery-pack current sensing and charge monitoring
• Isolation monitoring evaluation
• Electric vehicle battery-pack prototyping
• Industrial energy-storage system development
• Battery diagnostic and safety testing
• Multi-module battery communication testing
• BMS control-interface evaluation

Industries

Possible industries for these boards include:

• Automotive and electric mobility
• Battery manufacturing
• Renewable energy storage
• Industrial automation
• Transportation and logistics
• Marine electrification
• Aerospace and aviation electrification
• Research and development laboratories

Usage Ideas

1. High-Voltage BMS Prototype
   Build a laboratory battery management prototype that measures pack current, monitors charge conditions, and evaluates isolation-related signals.

2. Daisy-Chain Communication Demonstrator
   Create a multi-board setup to test isolated daisy-chain communication between battery-monitoring nodes in a distributed battery-pack design.

3. Redundant Current-Sensing Test Bench
   Use the board’s dual current-sensing support to compare redundant measurement paths and evaluate diagnostic behavior during simulated sensor faults.

Conclusion

The EVL9965C-L and EVL99BM2C-L promotional boards provide a useful starting point for evaluating high-voltage battery monitoring and BMS communication functions. With support for current, charge, and isolation monitoring, redundant sensing, analog inputs, gate pre-driver outputs, and isolated communication, they are well suited to early-stage development and validation of advanced battery-pack systems.