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BQ76PL536A-Q1

ACTIVE

3 to 6 series cell lithium-ion battery monitor and secondary protection for automotive battery packs

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BQ79616-Q1 ACTIVE 16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance 16S/14S/12S Battery Monitor, Balancer and Integrated Hardware Protector in a smaller package (10 mm × 10 mm) and with wider operating temperature (–40°C to +125°C)

BQ76PL536A-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Number of series cells (max) 6 Number of series cells (min) 3 Features Cell balancing Vin (max) (V) 27 Communication interface SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 105 Battery overvoltage protection (min) (V) 2 Battery overvoltage protection (max) (V) 5 Operating current (typ) (µA) 10500
Rating Automotive Number of series cells (max) 6 Number of series cells (min) 3 Features Cell balancing Vin (max) (V) 27 Communication interface SPI Device type Cell monitor and balancer Operating temperature range (°C) -40 to 105 Battery overvoltage protection (min) (V) 2 Battery overvoltage protection (max) (V) 5 Operating current (typ) (µA) 10500
HTQFP (PAP) 64 144 mm² (12 mm × 12 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 2: –40°C to +105°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C4B
  • 3-to-6 Series Cell Support, All Chemistries
  • Hot-Pluggable
  • High-Speed Serial Peripheral Interface (SPI) for Data Communications
  • Stackable Vertical Interface
  • Isolation Components Not Required Between Devices
  • High-Accuracy Analog-to-Digital Converter (ADC):
    • ±1 mV Typical Accuracy
    • 14-Bit Resolution, 6-µs Conversion Time
    • Nine ADC Inputs
    • Dedicated Pins for Synchronizing Measurements
  • Configuration Data Stored in Error Check/Correct (ECC)-One-Time-Programmable (OTP) Registers
  • Built-In Comparators (Secondary Protector) for:
    • Overvoltage and Undervoltage Protection
    • Overtemperature Protection
    • Programmable Thresholds and Delay Times
    • Dedicated Fault Signals
  • Cell Balancing Control Outputs With Safety Timeout
    • Balance Current Set by External Components
  • Supply Voltage Range from 7.2 V to 27 V Continuous and 36-V Peak
  • Low Power:
    • Typical 12-µA Sleep, 45-µA Idle
  • Integrated Precision 5-V, 3-mA LDO
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 2: –40°C to +105°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C4B
  • 3-to-6 Series Cell Support, All Chemistries
  • Hot-Pluggable
  • High-Speed Serial Peripheral Interface (SPI) for Data Communications
  • Stackable Vertical Interface
  • Isolation Components Not Required Between Devices
  • High-Accuracy Analog-to-Digital Converter (ADC):
    • ±1 mV Typical Accuracy
    • 14-Bit Resolution, 6-µs Conversion Time
    • Nine ADC Inputs
    • Dedicated Pins for Synchronizing Measurements
  • Configuration Data Stored in Error Check/Correct (ECC)-One-Time-Programmable (OTP) Registers
  • Built-In Comparators (Secondary Protector) for:
    • Overvoltage and Undervoltage Protection
    • Overtemperature Protection
    • Programmable Thresholds and Delay Times
    • Dedicated Fault Signals
  • Cell Balancing Control Outputs With Safety Timeout
    • Balance Current Set by External Components
  • Supply Voltage Range from 7.2 V to 27 V Continuous and 36-V Peak
  • Low Power:
    • Typical 12-µA Sleep, 45-µA Idle
  • Integrated Precision 5-V, 3-mA LDO

The bq76PL536A-Q1 device is a stackable battery monitor and protector for three-to-six lithium-ion cells in series. The bq76PL536A-Q1 integrates an analog front end (AFE) along with a precision analog-to-digital converter (ADC), used to precisely measure battery cell voltages. A separate ADC is used to measure temperature.

In addition to temperature measurement, overvoltage and undervoltage are monitored per channel for protection. Non-volatile memory stores the user-programmable protection thresholds and delay times. A FAULT output signals whenever one of these thresholds is exceeded.

Cell stacks of 192 cells can be supported by stacked bq76PL536A-Q1 devices. A high-speed SPI interface connects all devices.

The bq76PL536A-Q1 device is a stackable battery monitor and protector for three-to-six lithium-ion cells in series. The bq76PL536A-Q1 integrates an analog front end (AFE) along with a precision analog-to-digital converter (ADC), used to precisely measure battery cell voltages. A separate ADC is used to measure temperature.

In addition to temperature measurement, overvoltage and undervoltage are monitored per channel for protection. Non-volatile memory stores the user-programmable protection thresholds and delay times. A FAULT output signals whenever one of these thresholds is exceeded.

Cell stacks of 192 cells can be supported by stacked bq76PL536A-Q1 devices. A high-speed SPI interface connects all devices.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet bq76PL536A-Q1 3-to-6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for EV and HEV Applications datasheet (Rev. A) PDF | HTML Dec 12, 2016
Application note Designing EMI/EMC Safe Battery Pack PDF | HTML Jun 14, 2016
Technical article How batteries may make travel on Mars easier PDF | HTML Jan 27, 2016
Application note bq76PL536/536A/536AQ1 Communication Basics (Rev. B) Jul 5, 2011
Application note Multi-Cell Li-Ion Battery Management System Using MSP430F5529 and bq76PL536 Dec 16, 2010
Application note Improving Communications With the bq76PL536 Aug 11, 2010

Design & development

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Evaluation board

BQ76PL536EVM-3 — Evaluation Module for Lithium-Ion Battery Monitor and Secondary Protection IC

BQ76PL536EVM-3, Evaluation Module for the BQ76PL536A/bq76PL536A-Q1 Lithium-Ion Battery Monitor and Secondary Protection IC. The User’s Guide document covers the initial connection and installation of the Texas Instruments bq76PL536A/bq76PL536A-Q1 Evaluation Module (EVM), supplied in kit form (...)

User guide: PDF
Supported products & hardware
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Support software

BQ76PL536EVM-3-SW — BQ76PL536EVM-3 Software

The BQ76PL536EVM-3 tool interfaces with the bq76PL536EVM-3 evaluation board

Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
HTQFP (PAP) 64 Ultra Librarian
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