BQ24715RGRT

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PMIC - Battery Chargers are one of the main types of electronic components used to regulate power management and charging in electronic products. The BQ24715RGRT is one of the most popular charging integrated circuits in this category. This application brief will discuss the application fields, working principle, and characteristics of the BQ24715RGRT.

Applications

The BQ24715RGRT is designed to provide efficient power distribution and charging for battery powered products. It is suitable for use in a wide range of applications, such as mobile phones, tablets, notebook computers, digital cameras, and automotive systems. These products have traditionally used linear and/or switch-mode power supplies to manage input power and charge batteries. The BQ24715RGRT is a modern alternative to these power supply options that can provide improved efficiency and faster charging times.

Working Principle

The BQ24715RGRT consists of two main parts; an input charging stage and an output power stage. The input charging stage consists of a buck-boost converter and a power FET. This stage is responsible for regulating the input voltage and current according to the battery’s charging requirements. The output power stage is a 4-switch buck-boost converter and is responsible for efficiently distributing the provided power to the connected load.

It also features an integrated analog-to-digital converter (ADC) that can measure the connected battery cell’s voltage and temperature. This information is then used to monitor the battery’s health and adjust the charging parameters accordingly. The ADC is also used to detect the plugged-in power source, charging status, and other vital information.

Characteristics

The BQ24715RGRT charges batteries using both fast-charge and trickle-charge modes. In fast-charge mode, the battery can be charged up to 95% of its capacity in one hour. This makes the BQ24715RGRT one of the fastest battery chargers in its class. The device has an adjustable voltage threshold, which allows for fine-tuning the charging parameters to suit the needs of the application.

The device also includes a set of protection features to protect the battery from damaging conditions such as over-voltage, over-temperature, short-circuit, and over-current. The BQ24715RGRT also contains a variety of over-charge, over-discharge, under-charge, and current-limit safety features to ensure reliable charging and safe operation.

The BQ24715RGRT is designed to meet the requirements of high-power applications and can deliver up to 12A of charging current. Additionally, it has a low quiescent current, high efficiency, and low ripple rate, making it ideal for battery powered applications.

Conclusion

The BQ24715RGRT is a powerful and efficient battery charger that can be used in a wide range of applications. It is well-suited to high-power applications and has a variety of protection features to ensure safe and reliable operation. The device’s adjustable voltage limit and fast-charge capability make it one of the most advanced charging integrated circuits available.

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