AD7280AWBSTZ

Base Part Number:	AD7280
Series:	Automotive
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion
Number of Cells:	1 ~ 6
Fault Protection:	Over/Under Voltage
Interface:	SPI
Operating Temperature:	-40°C ~ 105°C (TA)
Package / Case:	48-LQFP
Supplier Device Package:	48-LQFP (7x7)

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AD7280AWBSTZ Application Field and Working Principle

The AD7280AWBSTZ is an Any Battery Cell Monitor designed by Analog Devices for use in battery management systems. This device can monitor up to 24 series- or parallel-connected cells, detect cell imbalance, and provide an accurate measurement of battery pack temperature. It is ideal for hybrid electric vehicles (HEVs), electric vehicles (EVs), and energy storage systems (ESS) applications. The AD7280AWBSTZ is a powerful and compact device with a wide range of features that make it ideal for battery management systems. It offers battery protection through over-voltage and under-voltage detection, as well as active cell balancing. The device’s high accuracy and wide temperature range make it suitable for use in many applications, including HEV, EV, and ESS. The device also has an integrated isolated serial interface that can be used to communicate between the monitor and the control systems, providing a reliable and flexible solution for battery management applications.The working principle of the AD7280AWBSTZ is based on the embedded Analog-to-Digital converter or ADC. The device uses a 12-bit successive approximation register (SAR) type ADC which is capable of measuring the voltage of up to 24 series or parallel connected battery cells. The ADC works by converting the input voltage into a number of digital codes and then the digital codes are used to determine the voltage of the monitored cell. The device also has an integrated temperature measurement circuit. The temperature measurement circuit uses a silicon bandgap sensor that works by measuring the voltage at the cold junction. This voltage is then compared to a previously measured temperature and the difference between the two is converted into a digital code. This digital code is then used to measure the temperature of the battery pack.The AD7280AWBSTZ features a robust cell protection system that can detect over-voltage and under-voltage conditions, as well as active cell balancing. The device has an integrated isolated serial interface that can be used to communicate between the monitor and the control systems, providing a reliable and flexible solution for battery management applications.The AD7280AWBSTZ is an ideal device for battery management applications, as it is capable of monitoring up to 24 series- or parallel-connected cells, detect cell imbalance, and provide an accurate measurement of battery pack temperature. The device also features a robust cell protection system and an integrated isolated serial interface that can be used to communicate between the monitor and the control systems. The device’s wide temperature range and high accuracy make it suitable for use in many applications, including HEV, EV, and ESS.

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