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ADBMS2950 Datasheet

ADBMS2950 Datasheet

Battery Pack Monitor
Part No.: ADBMS2950
Page: 2 Pages
Size: 179 KB
Manufacturer: Analog Devices, Inc.
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Update Time: 2025-02-08 16:16:11
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ADBMS2950 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
ADBMS2950WCCSZ Tray 260 3 48 -40°C ~ 125°C 48-Lead Plastic Side Wettable QFN (7mm × 7mm)  
ADBMS2950WCCSZ-RL Reel 2500 3 48 -40°C ~ 125°C 48-Lead Plastic Side Wettable QFN (7mm × 7mm)  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

ADBMS2950 Datasheet(PDF)

ADBMS2950 Datasheet(Picture)

ADBMS2950 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
    • 2 Mbps isolated serial communications
    • Capacitor or transformer coupled
    • Daisy-chaining option
    • 4-wire SPI option
  • General-purpose digital IO
    • Six general-purpose outputs
    • Dual threshold read-back of GPOs
    • Four GPIOs configurable as an I2C or SPI controller
  • 48-Lead side-solderable QFN package
  • AEC-Q100 qualified
  • ADBMS295xWFS models developed for use in ISO 26262 applications for ASIL D

ADBMS2950 Applications

  • Electric and hybrid electric vehicles
  • Backup battery systems
  • Grid energy storage

ADBMS2950 Description

The ADBMS2950 is battery pack monitors. The ADBMS2950 measure the current flowing in and out of a battery pack by sensing the voltage drop over a shunt resistor with a very low offset.

The ADBMS2950 also detect overcurrent conditions using fast overcurrent ADCs with digital threshold comparators and communicate their results through dedicated overcurrent alert lines with minimum delay.

The ADBMS2950 feature a total of 12 internally buffered high impedance inputs for measuring voltages from external sensors or resistor dividers, enabling measurement of pack voltages, temperatures, HV-Link voltages, chassis isolation, and the supervision of the state of contactors and fuses.

Six digital outputs (GPOs) supporting open-drain or push-pull can be used to control high voltage transistors to disconnect external resistor dividers. Four digital GPIOs also allow operation as an I2C or SPI controller interface to address an external EEPROM or other serial peripherals.

The built-in serial interface of the ADBMS2950 can be configured for SPI or isolated isoSPI communication to the host. An additional isoSPI port allows to connect a daisy-chain of the ADBMS2950 devices; optionally extended with the ADBMS683x cell monitors.

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