BQ25101HYFPR

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The BQ25101HYFPR is a high performance battery charger designed to charge one or two series cells. It is a member of the BQ25100 family of intelligent, space saving, switched mode hydrid battery charging products from Texas Instruments. Its main feature is to offer maximum programmability for each of the two cells, making it suitable for virtually any type of battery management system. Essentially, the BQ25101HYFPR is a battery charger and trickle charger (including optional Li-Ion 4.2V support) that is immensely flexible and very easy to integrate into a variety of PMIC / Battery Charger designs.

The BQ25101HYFPR device combines a powerful, high frequency step-down DC-DC converter, along with a programmable pre-charging current limit, reverse current protection, cell balancing, battery temperature monitoring, and overcharge protection. This feature set, together with its advanced integrated features, makes the BQ25101HYFPR extremely useful in battery-powered devices that require high accuracy and fast charging, flexible charging options and generous protection against abuse.

Application field of the BQ25101HYFPR

The BQ25101HYFPR is well suited for use in a variety of consumer and industrial applications, including battery-powered consumer electronics such as notebooks, tablets, radios, and digital cameras. It is also used in more specialized applications such as medical devices and electric vehicles, both of which need an efficient, accurate and fast charging solution.

The device features a wide input voltage range (up to 24V), allowing it to be used with a variety of battery chemistries (up to 16V) including lithium-ion, lithium-ion polymer, nickel metal hydride, nickel-cadmium, and sealed lead acid. With an input current of up to 5A, the BQ25101HYFPR is able to safely recharge batteries even when the input voltage is at a very low level.

Working Principle

The BQ25101HYFPR is a two-cell battery charger, with each cell having two charger output pins. A single LED is provided to monitor the battery charging status of each cell. The device works by automatically adjusting the charging current of each cell according to the voltage sensed at the input side. The cell charging can be set up for either fast charge or trickle charge profiles.

The device also includes a host of safety features to protect the battery from overcharging, over-drain, and excessive temperatures. Additionally, the device’s soft start feature prevents sudden surges in current and possible damage to the battery.

The device comes with integrated dual voltage controllers that can manage up to 7A of continuous current. This allows the user to safely charge via a variety of low-side power switches. Furthermore, the device is designed to support simultaneous input at both the USB and AC line, allowing the device to charge even when external power sources are unavailable.

The BQ25101HYFPR battery charger can be used with a variety of intelligent systems, including digital panel controls and communication interface designs which allow remote monitoring and control of the battery charging process. The device is also compatible with safety protocols such as overvoltage and overcurrent protection, making it a reliable and secure choice for battery charging systems.

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