BQ29718DSER

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Battery management is an integral component in modern day power systems. It is critical for the correct operation of devices powered by a battery. The BQ29718DSER from Texas Instruments is a power management IC (PMIC) that is specifically designed to provide comprehensive battery management support. This article will examine the application fields and working principle of the BQ29718DSER.

Application Fields of the BQ29718DSER

The BQ29718DSER is a PMIC that is designed for use in high-performance, low-cost portable applications. It is most commonly used in portable medical applications, such as patient monitors and vital sign monitors. The IC is also suitable for use in a variety of other portable applications, including personal healthcare devices, sports and fitness devices, and industrial handhelds. It has been designed to allow for efficient and accurate battery fuel gauging by providing real-time information on the battery state-of-charge (SOC) and its capacity.

Due to its low operating voltage, the BQ29718DSER can be used in applications that require batteries with low voltage, such as those used in wearable devices. The ICs high-accuracy monitoring capabilities make it suitable for use in applications where accurate monitoring of the battery cell characteristics is needed, such as those in automotive applications.

Working Principle

The BQ29718DSER utilizes a variety of technologies to monitor and manage battery fuel. The IC uses a patented, ultra-low power, charge-based measurement technology to accurately measure the battery’s state-of-charge and capacity. This technique eliminates the need for regular system recalibrations, resulting in improved accuracy and stability of the data.

The IC also has a real-time battery health monitoring feature. This feature provides the user with an instantaneous indication of the battery cell state-of-health (SOH) by measuring changes in the battery\'s voltage. This ensures that the battery can be monitored in real-time, without having to make regular system recalibrations.

In addition to the charge-based measurement technology and real-time health monitoring features, the BQ29718DSER also provides a wide range of other features. It has an integrated micro-controller and analog-to-digital converter, which allows for accurate and fast battery voltage measurement. It also has an integrated safety timer and over-voltage protection circuitry, ensuring safe and secure operation of the battery.

The IC also provides support for temperature protection, allowing the user to set temperature thresholds to protect the battery against dangerous temperatures. It also includes an input port for an external temperature sensor, allowing for more accurate temperature monitoring. Finally, the IC provides an optional smart battery charging system that can provide up to 6A of charging current.

Conclusion

The BQ29718DSER is a PMIC specifically designed for use in high-performance, low-cost portable applications. It is particularly suited for use in medical applications, as well as a variety of other portable applications. It utilizes a number of technologies to accurately and quickly measure and manage the battery’s state-of-charge, capacity and health. It also provides a number of additional features, such as temperature protection, an input port for an external temperature sensor, and an optional smart battery charging system. In summary, the BQ29718DSER provides a comprehensive battery management solution that is suitable for a wide range of applications.

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