AD7280AWBSTZ-RL

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Introduction

The AD7280AWBSTZ-RL is a programmable battery-management integrated circuit (IC) from the Analog Devices family. This IC offers a wide range of features that are essential for optimizing the performance of a battery pack. The AD7280AWBSTZ-RL is an advanced, multi-channel battery-management system designed to monitor, charge, and protect individual Li-Ion, LiFePO4 and lead-acid cell or battery packs, allowing the engineer to develop higher-reliability, longer-lasting battery packs.

Application Field

Due to its broad range of features, the AD7280AWBSTZ-RL is suitable for a wide range of applications. Its multiple on-board sensor inputs enable the monitoring and protection of individual Li-Ion, LiFePO4 and lead-acid cell or battery packs from over-voltage, over-temperature, charge and discharge currents. Application fields include portable devices such as mobile phones, laptops, electric vehicles, and utility vehicles. Furthermore, the AD7280AWBSTZ-RL\'s programmability makes it an ideal solution for large-scale industrial applications such as large industrial battery banks and photovoltaic systems.

Working Principle

The AD7280AWBSTZ-RL\'s sensitive current-sense circuit is capable of monitoring and controlling both charge and discharge currents. The AD7280AWBSTZ-RL also uses Charge Battery (%) to measure the remaining amount of charge in a cell or battery pack. When the cell or battery pack reaches a predetermined voltage level, the integrated system will automatically open the current path and enter the discharge phase. During this stage, the AD7280AWBSTZ-RL constantly monitors the current flow and temperature of the cell or battery pack. In order to protect the cell or battery pack from over-discharging, the AD7280AWBSTZ-RL automatically enters the standby mode when the cell or battery pack reaches a predetermined low voltage level.

The AD7280AWBSTZ-RL\'s active cell-balancing feature helps to maintains the voltage of each cell within a battery pack. The feature uses a pre-programmed charge-path to transfer charge from the high-voltage cells to the low-voltage cells in order to equalize the cell voltages to their pre-set voltage limits. This feature helps to extend the life-span of the battery pack. Moreover, the active leakage-current detection helps to increase the safety and reliability of the battery pack and protects it from over-circulating that could cause a fire hazard.

Conclusion

The AD7280AWBSTZ-RL is a highly programmable, multi-channel battery-management system suitable for a variety of applications. It offers a wide range of features such as voltage and current monitoring, over-voltage, over-temperature, and charge/discharge protection, as well as active cell-balancing and leakage-current detection, making it an ideal choice for the development of high-reliability, long-lasting battery packs.

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