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

BQ76PL536A-Q1

ACTIVE

Product details

Parameters

Number of series cells (Min) 3 Features Cell balancing Vin (Max) (V) 27 Number of series cells (Max) 6 Operating temperature range (C) -40 to 105 Rating Automotive open-in-new Find other Battery monitors & balancers

Package | Pins | Size

HTQFP (PAP) 64 144 mm² 12 x 12 open-in-new Find other Battery monitors & balancers

Features

  • 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
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Description

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet bq76PL536A-Q1 3-to-6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for EV and HEV Applications datasheet (Rev. A) Dec. 12, 2016
Technical articles How active and passive cell balancing works Oct. 05, 2016
Application notes Designing EMI/EMC Safe Battery Pack Jun. 14, 2016
Technical articles How batteries may make travel on Mars easier Jan. 27, 2016
User guides bq76PL536A and bq76PL536A-Q1 EVM Quick Start Guide (Rev. D) Jul. 28, 2015
Application notes bq76PL536/536A/536AQ1 Communication Basics (Rev. B) Jul. 05, 2011
Application notes Multi-Cell Li-Ion Battery Management System Using MSP430F5529 and bq76PL536 Dec. 16, 2010
Application notes Improving Communications With the bq76PL536 Aug. 11, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
399
Description

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 (...)

Software development

SUPPORT SOFTWARE Download
BQ76PL536EVM-3 Software
BQ76PL536EVM-3-SW The BQ76PL536EVM-3 tool interfaces with the bq76PL536EVM-3 evaluation board
Features
  • Monitor voltage and temperature readings from EVM
  • Graphically plot monitored data
  • Modify safety setting for your cell selection
  • Send commands to balance cells
SUPPORT SOFTWARE Download
SLUC240B.ZIP (1084 KB)

Reference designs

REFERENCE DESIGNS Download
Reference Design for 6-Cell EV/HEV Integrated Battery Monitor and Protector w/Passive Balancing
TIDA-00821 The TIDA-00821 reference design is a stackable monitor and protector for use in large format Lithium-ion batteries that provides monitoring, balancing, and communications. Each bq76PL536A-Q1 EVM can manage 3 to 6 cells  for Li-ion battery applications. Up to 32 bq76PL536A-Q1 EVM modules can be (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTQFP (PAP) 64 View options

Ordering & quality

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