TPS65010RGZTG4

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The TPS65010RGZTG4 is a member of the popular Texas Instruments\' TPS65010 series of Power Management ICs (PMICs). It is particularly suited for battery charging applications such as those found in mobile phones, tablets, and other handheld devices. In this article, we\'ll discuss the application field of the TPS65010RGZTG4 and its working principle in detail.

Application Field

The TPS65010RGZTG4 is a switched-mode battery charger and dedicated power management IC designed for portable applications that operate from a single Li-Ion battery cell or from an external power source such as USB or wall adapter. It is intended to provide a cost-effective and efficient solution to charge, discharge and management of a Li-Ion battery. The device provides several features, including charging conductor management, LED indicator output and automatic recharge to name a few. The TPS65010RGZTG4 is equipped with a safe-charging feature to protect against overcharging, and can be programmed with a charging current as low as 25mA. It also includes a selectable linear LDO regulator, a fast power-good output indicator, and supports thermal management with an adjustable user defined thermal limit.

The device is compatible with various popular battery types, such as NiMH, Ni-Cd and Li-Ion, and is qualified for -40C to 125C operation. It can provide battery charging across the full voltage range of 2.3V to 4.2V, with a fast-charge termination voltage of 4.15V. The charger also includes power path management, allowing the system battery to be charged even while the system is in use.

The device is available in a compact, thermally enhanced QFN package and provides superior power management, reliability, and efficiency compared to traditional discrete solutions. The TPS65010RGZTG4 is ideally suited for applications such as cellphones, media players, and other handheld devices.

Working Principle

At the heart of the device lies the buck-mode IC, TPS65010RGZ, which operates in closed-loop control mode to charge the battery from any power source. The device consists of three circuit blocks—battery charger controller, power path manager, and LED driver for status indication. The charger controller charges the battery with a constant voltage and current, and is configured with a fast-charge termination voltage of 4.15V.

The power path manager optimizes the power flow between an input source and the battery to ensure maximum power delivery to the system. It monitors the system load and automatically switches between power sources to deliver maximum power while protecting the battery from over-discharging. The LED driver enables the device to provide status indication such as charge complete, charging and low battery. It has a selectable LED current of up to 500mA.

The TPS65010RGZTG4 offers excellent voltage and current regulation across a wide range of conditions. It is protected against transients and over-voltages, and features adjustable soft start and frequency. It also supports an adjustable thermal limit to help protect the system from over-temperature conditions.

Conclusion

The TPS65010RGZTG4 is a high-performance switched-mode battery charger and power management IC designed for use in portable applications. It is qualified for -40C to 125C operation and provides superior power management and battery charging efficiency. The device features a buck-mode IC and three integrated circuit blocks to provide efficient charging and power path management. It also provides LED status indication and advanced diagnostics. The TPS65010RGZTG4 is an ideal choice for battery charging applications in handheld devices such as cell phones and media players.

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