BD71L4LHFV-1GTR Integrated Circuits (ICs)

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BD71L4LHFV-1GTR is a battery management product belonging to the field of Power Management Integrated Circuit (PMIC). It is a current sense voltage-current detector chip with a wide range of applications, especially relevant to automotive and industrial power applications. This article will present the application field and working principle of BD71L4LHFV-1GTR, as detailed below.

Application Field

The application field of BD71L4LHFV-1GTR mainly includes the automotive and the industrial fields. The main advantage of using this product in those fields is its ability to accurately detect the current and voltage, and therefore, to adjust and control it. This product is typically used in battery management, and power monitoring.

In the automotive field, this product is predominantly used to monitor the battery state of charge, vehicle power system and battery state monitoring, and also to detect tampering. Additionally, this product can also be used for maintaining battery packs in parallel, and for implementing charge and discharge functions.

In industrial fields, this product is typically used in DC power supply, voltage and current measurement, power management system, and battery management. Moreover, it can also be used for the protection of large-scale equipment such as the motor, motor drive, solar energy storage system, UPS and so on.

Working Principle

The working principle of BD71L4LHFV-1GTR can be categorized into two stages, measurement and control.

In the measurement stage, the device obtains current and voltage measurements of the system by utilizing the Voltage-Mode Charge Pumps (VMC) and the Current-Mode Charge Pumps (CMC), and by recognizing the inputs which are based on the voltage-current switches. The charge pumps make use of differential amplifiers, which aid in the detection of current and voltage sensing. The output signal after amplification is then proportionally converted into a digital signal.

In the control stage, the obtained signal is converted into digital signals. The voltage-current switches make use of comparators, through which the input signals obtained in the measurement stage are compared to pre-set thresholds. Once a certain condition is met, the chips then send out control signals to different connected devices, such as transistors, thereby controlling the current and voltage levels.

In conclusion, by making use of the measurement and control stages, BD71L4LHFV-1GTR accurately and effectively monitors and controls the current and voltage level in automotive and industrial field applications.

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