MCP73213-A6BI/MF

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Power Management Integrated (PMIC) Circuit systems have become increasingly diversified in recent years and can now be found in many various applications. The PMIC - Battery Charger is one of these systems and it has a range of different applications. The MCP73213-A6BI/MF is a battery charger chip specifically designed to meet the demands of today\'s ever-growing power-hungry mobile devices. The goal of this article is to explore the application field and working principle of the MCP73213-A6BI/MF.

Overview

The MCP73213-A6BI/MF Battery Charger is a high-performance battery charger that features an integrated high-speed 50A Power Path Controller, high-efficiency synchronous buck converter, LED status indicators, reverse current protection and current foldback, and external control pins. The charger chip is specifically designed for Li-Ion and Li-Pol batteries and chargers, as well as other battery chemistries, such as NiMH/NiCd and Lead-Acid. The product has an input voltage range of 4.5V to 16V and an output voltage range of 4.2V to 16V. The input current range is 3A, and the output current range is 3A, with a maximum charging current of 50A.

Application Fields

The MCP73213-A6BI/MF battery charger chip is suitable for a variety of applications, such as smartphones and tablets, portable game consoles, industrial and medical devices, toys, CCTV cameras and other mobile electronic equipment. The chip can be used with many battery chemistries, making it suitable for use in a broad range of applications. The charger is designed to be efficient and flexible, while still delivering high power with very low power losses.

Working Principle

The MCP73213-A6BI/MF is a step-down Battery Charger controller that uses synchronous buck converter technology to both charge and promote battery longevity. The battery charger operates in two stages: the semi-automatic pulsed current stage, and the fully automatic step charging stage. During both stages, the maximum current is set through the external Gain resistor. The buck converter topology offers low ripple, low power loss, and high efficiency. The charger supports both trickle and constant current charging modes.

In the semi-automatic pulsed current stage, the MCP73213-A6BI/MF charges the battery with a pulsed current. The current pulses are generated by the external resistor, with each pulse containing a certain amount of charge. The duration of the pulses is adjustable and can be set with the external timing resistor. The pulsed current stage reduces peak current levels and allows for better control of the charging current.

In the fully automatic step charging stage, the MCP73213-A6BI/MF adjusts the output voltage according to the battery’s state of charge. This is done by monitoring the voltage at its feedback pin. When the output voltage reaches a certain level (indicating the battery is full), the charger automatically switches to a low-current trickle charge to provide the battery with an optimum amount of power. The charger also provides over-voltage, short-circuit, and reverse charge protection.

Conclusion

The MCP73213-A6BI/MF is an ideal choice for a wide range of applications due to its high efficiency, low power loss, fast charging, and integrated protection capabilities. The chip can be used with many battery chemistries, supports both timed pulses and fully automated charging, and has a range of external control pins. With its comprehensive feature set, the MCP73213-A6BI/MF is an excellent choice for any power-hungry electronic device.

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