AP9214LA-AI-HSB-7

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Protection
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Fault Protection:	Over Current, Over Voltage, Short Circuit
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	6-UDFN Exposed Pad
Supplier Device Package:	U-DFN2535-6

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Introduction

AP9214LA-AI-HSB-7 is a battery management IC from STMicroelectronics. This IC offers efficient charging and current monitoring for battery applications of up to 7S (7 series)Li-Ion and Li-Po supporting up to 36 V of charging current and features short-circuit protection and load disconnect. This IC can be used in a variety of applications, from industrial, consumer and automotive to battery-powered applications. In this article, we will discuss the application field of AP9214LA-AI-HSB-7 and the working principle behind it.

Application Field

The AP9214LA-AI-HSB-7 is an IC designed for battery management. It is designed to control the charging and current monitoring of batteries up to 7S (7 series) Li-Ion and Li-Po supporting up to 36V of charging current. The IC also offers overcurrent, overtemperature and undervoltage protection. It is suitable for many applications including consumer electronics, home appliances, consumer & automotive lithium-ion battery packs, industrial battery packs and renewable energy battery packs. Because it is designed to support high current and high voltage applications, it is ideal for power applications. With its multiple protection functions, it is also suitable for high-end chargers and power supplies, as well as for storage battery systems.

Working Principle

The working principle behind the AP9214LA-AI-HSB-7 IC is based on the Battery Protection and Current Monitoring (BPCM) architecture. The main function of this architecture is to monitor and protect batteries during charging, discharging, equalizing, and idle modes. The BPCM utilizes an operational amplifier and ADC to obtain battery data such as voltage and temperature. The operational amplifier amplifies signals from the battery, which are then collected by the ADC. The BPCM then monitors the collected data for overdischarge, overcharge, over-current and high temperature protection. If any of these parameters is exceeded, the voltage converter is shut off and the battery is protected from damage.The AP9214LA-AI-HSB-7 contains two power MOSFETs as well as two current sense resistors. The power MOSFETs are used to control the charging and discharging of the batteries and the current sense resistors are used to measure the current level. The IC also has an output power switch that provides over current, over temperature and under voltage protection to the batteries. The output power switch is controlled by the internal BPCM to maintain charging and discharging of the batteries according to the battery\'s condition.

Conclusion

The AP9214LA-AI-HSB-7 is an IC designed for efficient battery management with current monitoring and overcurrent, overtemperature and undervoltage protection. It is suitable for a wide range of applications, from consumer electronics to industrial and automotive battery packs. It utilizes the BPCM architecture to monitor and protect batteries during charging, discharging, equalizing, and idle modes. The IC contains two power MOSFETs and two current sense resistors to control the charging and discharging of the batteries. The output power switch provides overcurrent, overtemperature and undervoltage protection to the batteries.

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