BQ20Z70PWR-V160 Integrated Circuits (ICs)

Series:	Impedance Track™
Packaging:	Tape & Reel (TR)
Part Status:	Not For New Designs
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	2 ~ 4
Fault Protection:	Over Current, Over Temperature, Over/Under Voltage, Short Circuit
Interface:	SMBus
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	BQ20Z70

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PMIC - Battery Management: BQ20Z70PWR-V160 application field and working principle

Introduction

A Power Management Integrated Circuit, also known as a PMIC, is an integrated circuit (IC) designed to enable the efficient management of a power supply and associated components. These components include voltage regulators, power switches, and pulse width modulation (PWM) controllers. When combined, these components serve to provide the most efficient power supply for the application at hand. One such example is the BQ20Z70PWR-V160 PMIC, which is specifically designed for battery management applications.

Application Areas

The BQ20Z70PWR-V160 is designed for use in battery management systems such as those implemented in portable electronic devices like mobile phones and laptops. This PMIC integrates fast, accurate and low-power monitoring of the battery closely. Additionally, the BQ20Z70PWR-V160 includes protection settings and logic that provide precise coordination between the regulated power supply and the battery.The BQ20Z70PWR-V160\'s exceptional performance is enabled by its high precision and wide range of operating parameters. With its low power consumption and high accuracy, the BQ20Z70PWR-V160 is suitable for a wide range of applications including those that require multiple battery regulators and unified power management.

BQ20Z70PWR-V160 Working Principle

The working principle of the BQ20Z70PWR-V160 involves three main processes. The first process is the process of controlling the output voltage of the regulated power supply. This process involves using an analog input signal from either an external or internal comparator to generate an output voltage that is proportional to the input signal. The second process is referred to as voltage scaling, which is a process used to ensure that the output voltage within the system remains constant regardless of the current load. The voltage scaling process is achieved through the adjustment of the current source transistor to maintain a constant output voltage despite different load conditions. The third process is the battery monitoring process. This consists of multiple components including a sense resistor network, an isolated voltage GD (ground-detect) comparator, and charge correction circuitry. The sense resistor network measures the resistance of the battery and relays this to the other components of the system. The isolated voltage GD comparator detects when the voltage of the battery drops below a pre-defined level and disconnects the load to protect the battery. The charge correction circuitry monitors the battery\'s charge state and prevents unintended overcharging.

Conclusion

The BQ20Z70PWR-V160 is a highly efficient and powerful PMIC developed for use in a variety of battery management applications. The PMIC integrates fast, accurate, and low-power monitoring of the battery which is enabled by its high precision and wide range of operating parameters. Additionally, the BQ20Z70PWR-V160 utilizes three main processes in order to ensure the accuracy and efficiency of the power supply: controlling the output voltage of the regulated power supply, voltage scaling, and battery monitoring. With its robust capabilities, the BQ20Z70PWR-V160 is suitable for battery management systems implemented in a variety of portable electronic devices.

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