BQ7693002DBT

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Introduction

PMIC - Battery Management is a field of power electronic engineering dealing with the management, supervision, testing and control of power sources, such as batteries, capacitors and charge pumps. PMIC - Battery Management enables components to interact with each other to provide power in the most efficient and reliable way. An important aspect of PMIC - Battery Management is the selection of the correct application and working principles for the components. This article focuses on a particular example of a PMIC - Battery Management device, the BQ7693002DBT.

BQ7693002DBT Application Field

The BQ7693002DBT is a power management integrated circuit (PMIC) that has been designed for advanced battery management applications. It is a three-channel device, with dedicated independent monitoring and control circuitry for each cell in the battery. The device performs voltage and current measurements, cell balancing, and advanced analysis functions in order to ensure the safe, reliable, and efficient operation of the battery pack.

The BQ7693002DBT is suitable for a wide range of battery management applications, such as cellular phones, portable media players, digital still cameras and internet tablets. In particular, the device is suitable for use in advanced battery management systems requiring high accuracy, low power, high efficiency and reliable operation over a wide range of operating conditions.

BQ7693002DBT Working Principle

The BQ7693002DBT includes a 3-channel, integrated power management circuit that provides power and voltage regulation, cell-level monitoring and control, fault detection, and battery cell balancing. The device operates in one of two modes. In continuous power management mode, the device monitors and controls the battery cells using advanced analysis functions. In cell-level monitoring and control mode, the device only monitors the individual cell voltages and currents.

In continuous power management mode, the BQ7693002DBT continuously monitors and manages the individual cell voltages, currents, and temperatures. Based on the measured values, the device can detect faults, notify the system of any anomalies, and balance the cells. In addition, the device can also monitor the external power connection and provide power disconnection in case of over-temperature and over-voltage conditions. Furthermore, the device offers comprehensive protection against cell overcharge, overdischarge, and short circuits.

In cell-level monitoring and control mode, the BQ7693002DBT monitors the battery cells and provides cell-level control of each cell. The device can provide open-cell detection, overcharge/overdischarge protection with charge control, and cell temperature monitoring. It can also detect and report time-based faults, such as low cell voltage, high cell voltage, and cell imbalance. In addition, the device can shut down the power connection in case of over-temperature or over-voltage events.

Conclusion

The BQ7693002DBT is a powerful PMIC - Battery Management device that provides comprehensive monitoring and control functions. It is suitable for a wide range of battery management applications, such as cellular phones, portable media players, digital still cameras, and internet tablets. The device operates in two modes, continuous power management mode and cell-level monitoring and control mode. In continuous power management mode, the device monitors and controls the individual cells using advanced analysis functions. In cell-level monitoring and control mode, the device only monitors the individual cell voltages and currents. In both modes, the device offers comprehensive protection against cell faults, overcharge and overdischarge, and short circuits, as well as has the capability to shut down the external power connection in case of over-temperature or over-voltage events.

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