EVL9965T/EVL99BM2T Promotional Boards

Introduction

The STMicroelectronics EVL9965T/EVL99BM2T promotional boards are evaluation platforms for testing isolated battery-management communication architectures. They integrate either the L9965T or L99BM2T dual-die bidirectional SPI BMS transceiver, helping engineers assess reliable data exchange between voltage domains through a twisted-pair connection.

Part Description

These evaluation boards are designed around STMicroelectronics’ L9965T or L99BM2T bidirectional SPI transceiver devices for battery management system (BMS) networks. Their dual-die architecture supports communication across isolated voltage domains, an important requirement in high-voltage battery packs and distributed energy-storage systems.

The boards provide practical support circuitry for development and demonstration, including an onboard CAN transceiver for external communication, an integrated LDO regulator for local power generation, and status LEDs for quick visual monitoring. GUI support enables configuration, communication testing, and evaluation of the transceiver functions without requiring a fully custom hardware platform.

By providing a ready-to-use hardware environment, the EVL9965T/EVL99BM2T boards can reduce the time needed to investigate BMS communication links, validate system behavior, and develop prototype battery-control networks.

Applications

• Automotive battery monitoring systems
• High-voltage electric-vehicle battery packs
• Battery management system communication networks
• Energy storage system monitoring
• Uninterruptible power supply systems
• Industrial battery packs
• Distributed battery-cell monitoring modules
• Isolated SPI communication evaluation
• CAN-connected battery diagnostic platforms
• Battery pack prototype and validation systems

Industries

• Automotive and electric vehicles
• Energy storage
• Renewable energy
• Industrial automation
• Power backup and UPS equipment
• Transportation electrification
• Battery manufacturing
• Test and measurement
• Smart-grid infrastructure
• Research and development laboratories

Usage Ideas

1. EV Battery Module Communication Demo
   Use multiple evaluation boards to model communication between battery-monitoring nodes in separate voltage domains within an electric-vehicle battery pack.

2. Energy Storage BMS Prototype
   Build a prototype monitoring network for stationary battery cabinets, using the twisted-pair SPI link for communication between isolated battery modules.

3. CAN Battery Diagnostics Interface
   Connect the onboard CAN transceiver to a diagnostic controller or PC interface to evaluate BMS status reporting, configuration, and fault-monitoring workflows.

Conclusion

The EVL9965T/EVL99BM2T promotional boards provide a convenient development platform for evaluating bidirectional SPI communication in isolated battery-management applications. With integrated power regulation, CAN connectivity, visual status indication, and GUI support, they are well suited for engineers developing automotive, energy-storage, and UPS battery monitoring systems.