L9963E

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Automotive chip for battery management applications with daisy chain up to 31 devices

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Product overview

Description

The L9963E is a Li-ion battery monitoring and protecting chip for high-reliability automotive applications and energy storage systems. Up to 14 stacked battery cells can be monitored to meet the requirements of 48 V and higher voltage systems. Each cell voltage is measured with high accuracy, as well as the current for the on-chip coulomb counting. The device can monitor up to 7 NTCs. The information is transmitted through SPI communication or isolated interface.
Multiple L9963E can be connected in a daisy chain and communicate with one host processor via the transformer isolated interfaces, featuring high-speed, low EMI, long distance, and reliable data transmission.
Passive balancing with programmable channel selection is offered in both normal and low power mode (silent balance). The balancing can be terminated automatically based on internal timer interrupt. Nine GPIOs are integrated for external monitoring and controlling. The L9963E features a comprehensive set of fault detection and notification functions to meet the safety standard requirements.
  • All features

    • AEC-Q100 qualified
    • Measures 4 to 14 cells in series, with 0 μs desynchronization delay between samples. Supports also busbar connection without altering cell results
    • Coulomb counter supporting pack overcurrent detection in both ignition on and off states. Fully synchronized current and voltage samples
    • 16-bit voltage ADC with maximum error of ±2 mV in the [0.5 – 4.3] V range, after soldering, in [-40; +105] °C Tj range
    • 2.66 Mbps isolated serial communication with regenerative buffer, supporting dual access ring. Less than 4 us latency between start of conversion of the 1st and the 31st device in a chain. Less than 4 ms to convert and read 96 cells in a system using 8 L9963E and L9963T transceiver. Less than 8 ms to convert and read 210 cells in a system using 15 L9963E and L9963T transceiver. Less than 16 ms to convert and read 434 cells in a system using 31 L9963E and L9963T transceiver. Supports both XFMR and CAP based isolation
    • 200 mA passive internal balancing current for each cell in both normal and silent-balancing mode. Possibility of executing cyclic wake up measurements. Manual/Timed balancing, on multiple channels simultaneously; Internal/External balancing
    • Fully redundant cell measurement path, with ADC Swap, for enhanced safety and limp home functionality
    • Intelligent diagnostic routine providing automatic failure validation. Redundant fault notification through both SPI Global Status Word (GSW) and dedicated FAULT line
    • Two 5 V regulators supporting external load connection with 25 mA (VCOM) and 50 mA (VTREF) current capability
    • 9 GPIOs, with up to 7 analog inputs for NTC sensing
    • Robust hot-plug performance. No Zeners needed in parallel to each cell
    • Full ISO26262 compliant, ASIL-D systems ready

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Related Applications

Automotive

Industrial

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      EVAL-L9963E-MCU

      Active

      L9963E Evaluation Board with on board MCU with preloaded firmware (GUI)

      Automotive IC Eval Boards ST
      EVAL-L9963E-MCU

      Description:

      L9963E Evaluation Board with on board MCU with preloaded firmware (GUI)

      EVAL-L9963E-NDS

      Active

      L9963E single node in a distributed BMS System

      Automotive IC Eval Boards ST
      EVAL-L9963E-NDS

      Description:

      L9963E single node in a distributed BMS System

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STMicroelectronics - L9963E

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9963E
Active
TQFP 64 10x10x1.0 Automotive Safety Ecopack2
L9963E-TR
Active
TQFP 64 10x10x1.0 Automotive Safety Ecopack2

L9963E

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TQFP 64 10x10x1.0

Grade

Automotive Safety

RoHS Compliance Grade

Ecopack2

L9963E-TR

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TQFP 64 10x10x1.0

Grade

Automotive Safety

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L9963E No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tray TQFP 64 10x10x1.0 - - MALAYSIA 6.92 / 1k
L9963E-TR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel TQFP 64 10x10x1.0 - - MALAYSIA 6.92 / 1k

L9963E

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

6.92 / 1k

ECCN (EU)

NEC

Packing Type

Tray

Package

TQFP 64 10x10x1.0

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

6.92 / 1k

Country of Origin

MALAYSIA

L9963E-TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

6.92 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TQFP 64 10x10x1.0

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

6.92 / 1k

Country of Origin

MALAYSIA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors