BQ24187YFFT

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PMICs, or power management integrated circuits, are an integral part of virtually every industrial and consumer application from computers to toys. Battery chargers are a subgroup of PMICs and their designs need to offer the highest efficiency and reliability, meeting the needs of their applications for power. The BQ24187YFFT is one such PMIC that is specifically designed for battery charging applications. This article will discuss the application field and working principle of the BQ24187YFFT.

The BQ24187YFFT is a highly integrated device for battery charging, with features such as high efficiency, low quiescent current, wide input voltage range, and power path management. It is designed to work with battery packs that range from 4.2-32V, and the charge current can be up to 3A. The IC has an integrated high-side power MOSFET that has an on-resistance of less than 0.26 Ohms. This makes the BQ24187YFFT ideal for charging a wide range of batteries, including Li-ion, LiFePO4, and lead-acid batteries.

In terms of its application field, the BQ24187YFFT can be found in a variety of consumer and commercial applications, including power tools, drones, robots, electric vehicles, and energy storage systems. It can also be used for general purpose battery charging applications, such as power banks, emergency power supplies, and reserve power systems. Additionally, it can be used in intelligent mobile charger systems, such as wireless chargers, wall chargers, and automotive chargers.

In terms of its working principle, the BQ24187YFFT uses a constant voltage-current loop to maintain safe and reliable charging conditions. Its integrated high-side MOSFET enables it to support higher input voltages and faster charging times. The IC also uses an internal voltage reference to maintain an accurate and stable charge voltage on its output. An overvoltage protection circuit helps to protect the battery from overcharging, and the IC is also equipped with a thermal sensing circuit that activates the charge cycle if the temperature falls within the predefined limits. Furthermore, the IC employs various safety features to ensure safety of use, such as cell temperature monitoring, current and voltage protection, and Under-Voltage Lockout.

Overall, the BQ24187YFFT is an ideal PMIC for battery charging applications, and is found in a variety of consumer and commercial applications. Its high efficiency and reliability makes it well suited for high current, large capacity battery packs. Its wide input voltage range, combined with its high side MOSFET and integrated voltage reference, allows the BQ24187YFFT to provide consistent and accurate charging performance with protection against overcharging.

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