ADBMS2950B中文资料Battery Pack Monitor数据手册ADI规格书

描述 Description

The ADBMS2950B is a battery pack monitor for current orvoltage sense applications. It measures the current flowing inand out of a battery pack by sensing the voltage drop over ashunt resistor with a very low offset.

The ADBMS2950B also detects overcurrent conditions usingfast overcurrent analog-to-digital converters (ADCs) withdigital threshold comparators and communicate their resultsthrough dedicated overcurrent alert lines with minimum delay.It features a total of 12 internally buffered high impedanceinputs for measuring voltages from external sensors or resistor-dividers, enabling measurement of pack voltages, temperatures,HV-Link voltages, chassis isolation, and the supervision of thestate of contactors and fuses.

Six digital outputs (GPOs) supporting open-drain or push-pullcan be used to control high voltage transistors to disconnectexternal resistor-dividers. Four digital general-purposeinputs/outputs (GPIOs) also allow operation as an I2C or SPI controller interface to address an external electronically erasableprogrammable read‐only memory (EEPROM) or other serialperipherals.

The built-in serial interface of the ADBMS2950B can beconfigured for SPI or isolated isoSPI communication to thehost. An additional isoSPI port allows to connect a daisy-chainof the ADBMS2950B devices, which is optionally extended withthe ADBMS6830B cell monitor.

Applications


Backup battery systems

Grid energy storage

特性 Features

Battery pack current measurement
Buffered analog inputs
Continuous operation option
Lossless measurement for coulomb counting
1 ms update rate
±0.1% maximum gain error
±1 µV maximum offset
Redundant implementation
Battery pack voltage measurement
Buffered analog inputs
Synchronous with current measurement
Differential and single-ended mode
Redundant implementation
10 additional voltage measurement channels
Buffered analog inputs
On-demand operation
Differential and single-ended mode
Redundant implementation
Overcurrent detection
Triple redundancy with majority voting
PWM output options
Built-in isoSPI™ interface
2 Mbps isolated serial communications
Capacitor or transformer coupled
Daisy-chaining option
4-wire SPI option
General-purpose digital IO
Six general-purpose outputs (GPOs)
Dual threshold read-back of GPOs
Four GPIOs configurable as an I2C or SPI controller
48-Lead side-solderable QFN package

应用 Application

IoT Battery ManagementIndustrial Machine VisionPower ToolsMobile Robotics Battery ManagementIndustrial Equipment Battery MonitoringAdaptive Battery Type System MonitoringPortable Energy Storage SystemsElectric Two-Wheelers (E2W such as E-scooter, E-bikes)Light Electric Vehicles