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 control. 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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All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      EVAL-L9963E-MCU

      NRND

      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)
    • Part number
      Status
      Description
      Type
      Supplier

      Lemberg Engineering Services

      Active

      General development services for MCUs/MPUs

      Design services from partners Lemberg Solutions
      Lemberg Engineering Services

      Description:

      General development services for MCUs/MPUs
    • Part number
      Status
      Description
      Type
      Supplier

      AEK-POW-BMS63EN

      Active

      Battery management system module based on L9963E

      Transportation ST
      AEK-POW-BMS63EN

      Description:

      Battery management system module based on L9963E

      AEK-POW-BMSHOLD

      Active

      Battery holder for cylindrical batteries and battery management system node for automotive applications

      Transportation --
      AEK-POW-BMSHOLD

      Description:

      Battery holder for cylindrical batteries and battery management system node for automotive applications

      AEK-POW-BMSLV

      Active

      Battery management system evaluation board for low-voltage applications

      Transportation ST
      AEK-POW-BMSLV

      Description:

      Battery management system evaluation board for low-voltage applications

      AEK-POW-BMSNOTX

      Active

      Non-isolated Battery Management node dedicated to auxiliar battery packs able to directly connect the MCU via standard SPI protocol

      Transportation ST
      AEK-POW-BMSNOTX

      Description:

      Non-isolated Battery Management node dedicated to auxiliar battery packs able to directly connect the MCU via standard SPI protocol

      AEK-POW-BMSWTX

      Active

      Battery management system module based on L9963E and L9963T

      Transportation ST
      AEK-POW-BMSWTX

      Description:

      Battery management system module based on L9963E and L9963T

EDA Symbols, Footprints and 3D Models

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

Swipe or click the button to explore more details Don't show this again
Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Operating temperature (°C)
min
max
L9963E
Active
7.8 / 1k
Available at 1 distributors

Distributor availability of L9963E

Distributor Name
Region Stock Min. Order Third party link
YOSUN ASIA/PACIFIC 98 1

Distributor reported inventory date: 2/18/2025

TQFP 64 10x10x1.0 Tray MALAYSIA EAR99 NEC 105 -40
L9963E-TR
Active
7.8 / 1k
Available at 3 distributors

Distributor availability of L9963E-TR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 132 1
MOUSER WORLDWIDE 19 1
DIGIKEY WORLDWIDE 912 1

Distributor reported inventory date: 2/18/2025

TQFP 64 10x10x1.0 Tape and Reel MALAYSIA EAR99 NEC 105 -40

L9963E Active

Budgetary Price (US$)*/Qty:
7.8 / 1k
Package:
TQFP 64 10x10x1.0
Packing Type:
Tray
RoHS:
Country of Origin:
MALAYSIA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

L9963E

Operating Temperature (°C)

Min:

105

Max:

-40

Distributor Name

YOSUN

Stock

98

Min.Order

1

Region

ASIA/PACIFIC Buy from Distributor

Distributor reported inventory date: 2/18/2025

L9963E-TR Active

Budgetary Price (US$)*/Qty:
7.8 / 1k
Package:
TQFP 64 10x10x1.0
Packing Type:
Tape and Reel
RoHS:
Country of Origin:
MALAYSIA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

L9963E-TR

Operating Temperature (°C)

Min:

105

Max:

-40

Distributor Name

Farnell Element14

Stock

132

Min.Order

1

MOUSER

Stock

19

Min.Order

1

Region

WORLDWIDE Buy from Distributor

DIGIKEY

Stock

912

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2/18/2025

Swipe or click the button to explore more details Don't show this again

(*) 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

Battery management systems - a key to e-mobility applications