BQ24618RGER

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Power management integrated circuits (PMICs) play an important role in many modern electronic devices and provide a wide variety of functions for power, communication and control. Battery Chargers, one of the common PMICs, are used to charge the battery from an external voltage source, typically a wall-mounted power supply. The BQ24618RGER Power Management Integrated Circuit (PMIC) from Texas Instruments is designed specifically for battery charging applications and features a high power integrated charge controller, built-in Power Path management and comprehensive system diagnostics. This paper will discuss the application and working principle of the BQ24618RGER in order to provide an understanding of its functionality.

The BQ24618RGER is a battery charger IC designed to charge multiple cells and lithium-ion batteries. It has a wide input voltage range of 4.2 V to 14 V and can support battery voltages of up to 25 V. It is capable of charging batteries up to 5 A, and can operate in either constant voltage or constant current mode. The BQ24618RGER includes a wide range of power path management features to ensure maximum efficiency and safety of the battery charging, including short-circuit protection, overvoltage protection and undervoltage protection. Additionally, the BQ24618RGER provides system diagnostics for monitoring the current in the battery and it can detect an open thermistor.

The BQ24618RGER features an integrated charge controller, which is described as a separate block in the system. The charge controller is responsible for controlling the charge currents and buck boost converter to supply the correct amount of current to the battery. It does this based on the information from the battery management circuit and the AC power input. The integrated charge controller is capable of charging multiple cells in series, in parallel, and in different cell combinations and is also capable of controlling the charge current to each cell. This allows the BQ24618RGER to efficiently charge larger and more complex battery configurations.

The BQ24618RGER also includes an integrated power path management function that can be used to optimize the power usage of the system. This feature allows the BQ24618RGER to control the power supply to the battery, ensuring that the battery is never overcharged or over discharged. The BQ24618RGER also includes an integrated buck boost converter to provide a stable output voltage no matter what the input voltage is, which is important for charging lithium-ion batteries. Additionally, the BQ24618RGER provides comprehensive diagnostics and can detect open thermistors, which is important for battery health and safety.

In conclusion, the BQ24618RGER is a highly integrated PMIC designed specifically for battery charging applications. It features an integrated charge controller and a wide range of power management features for maximum efficiency and safety. It can support a wide range of battery configurations and can detect open thermistors for improved battery health and safety. The BQ24618RGER is ideal for applications requiring efficient and reliable battery charging.

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