DS2761AE

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Battery management systems (BMS) are a crucial part of power management, especially in systems with high power requirements. The DS2761AE is a low power PMIC with integrated BMS functionality that helps manage the power requirements of devices requiring high-current power. Specifically, the DS2761AE is designed to manage and protect batteries up to 30V nominal, making it ideal for devices with high-power batteries.

Applications

The DS2761AE is designed to manage the power and protection of high-power batteries, making it ideal for a wide range of applications including load shedding, cell balancing, battery management, and system protection. Load shedding involves appropriately limiting current or voltage to the cells in order to protect them from damage or degradation. Cell balancing involves managing the charge current applied to each cell in order to achieve even charging of each cell. Battery management includes over-voltage or over-temperature protection. System Protection involves protecting the system as a whole from any over-current, over-voltage, or thermal conditions.

Features

The range of protection and management capabilities provided by the DS2761AE makes it an excellent solution for managing batteries. It contains several key features designed to ensure safe and efficient operation. Some of these features include:

• High-Efficiency Buck Regulator: The DS2761AE has a high-efficiency buck regulator that can generate up to 30V output. This regulator is designed to offer high power conversion efficiency, low output noise, and excellent transient performance.
• Cell Balancing: The DS2761AE includes a cell balancing feature that enables regulated current sharing between cells, which enables the cells to be charged at the same rate. This feature prevents one cell from overcharging and ensures that the cells are balanced.
• Over-voltage Protection: The DS2761AE contains an over-voltage protection feature that is designed to protect the cells from over-voltage conditions. If a cell voltage exceeds the threshold set by the over-voltage protection feature, the DS2761AE will quickly shut off the charging current to the cell.

Working Principle

The DS2761AE is designed to monitor and control the charging and discharging of batteries. It uses a switching regulator to boost the output voltage up to 30V, and a step-down regulator to regulate the current and voltage output. It also features a cell balancing feature that divides the total charging current between the cells, which prevents any one cell from being overcharged. The system also monitors the battery temperature, and shuts off charging if the temperature exceeds a pre-defined temperature threshold. It also contains several protection features that can trigger an over-voltage or over-current protection.

The DS2761AE also supports monitoring and communication of various parameters, including output voltage, input current, battery temperature, and more. This information can be communicated to a host system via an I2C/SMBus interface, which enables the host system to monitor and control the battery management system. This enables the battery to be safely monitored and managed, ensuring safe operation and optimal battery performance.

Conclusion

The DS2761AE is an excellent PMIC with integrated BMS functionality that helps manage the power requirements of devices requiring high-current power. It includes features such as a high-efficiency buck regulator, cell balancing, and over-voltage protection for safe operation. The device also supports monitoring and communication of various parameters, which enables the host system to monitor and control the system. The DS2761AE is an ideal solution for managing the power and protection of high-power batteries, making it ideal for a wide range of applications, including load shedding, cell balancing, battery management, and system protection.

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