Product details


Number of series cells (Min) 3 Vin (Max) (V) 33 Number of series cells (Max) 6 Features Cell Balancing, Integrated ADC, Multi-cell Support, Open wire detection, Over-temperature (OT), Over-voltage (OV), Requires separate MCU, Stackable (built-in interface), Temperature sense, Under-temperature (UT), Under-voltage (UV) Operating temperature range (C) -40 to 105 Rating Automotive open-in-new Find other Battery monitors & balancers

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  • 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 ESD classification level 2
    • Device CDM ESD classification level C4B
  • Voltage monitor, temperature monitor and communication functions: SafeTI™-26262 ASIL-D compliant
  • ± 1.1mV Cell voltage measurement accuracy with an offset
  • Configurable digital low pass filter as low as 1.2Hz
  • Supports simultaneous cell voltage measurements
    • Full-accuracy stack measurements in less than 1 ms (for 96 cells)
  • Optional ring architecture to ensure stack communication even with communication cable break
  • Monitors 3 to 6 cell connections and up to 6 NTC/auxiliary channels
    • Integrated 16-bit analog-to-digital converters (ADC)
  • Integrated high-voltage AFE filter components
  • Designed for robust hot-plug performance
  • Stackable configuration up to 64 devices (1 base + 63 stack, 384-series cells)
  • Isolated differential daisy chain communication
    • Supports transformer or capacitor based isolation
  • Configurable SINC3 digital filter
  • Integrated hardware protector
    • Secondary protection for cell overtemperature and undertemperature
    • Secondary protection for cell overvoltage and undervoltage
  • Hardware protector function: SafeTI™-26262 ASIL-B compliant
  • Integrated cell-balancing MOSFET’s up to 150 mA
  • Designed to pass BCI testing
  • UART Host interface

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The BQ79606A-Q1 device provides simultaneous, high accuracy, channel measurements for three to six battery cells. With the inclusion of a daisy chain communication port, the BQ79606A-Q1 device is stackable (up to 64 devices) to support the large stack configurations found in battery packs for electrified automotive drive trains. Providing a Delta Sigma converter per cell input, the BQ79606A-Q1 allows simultaneous measurement of the battery voltages.

The BQ79606A-Q1 includes an auxiliary ADC that supports cell temperature measurements for up to six NTCs as well as internal rails to enable safety checks for the device. A die temperature measurement ADC is also included to provide temperature correction to enable high accuracy results over an extended temperature range.

Host communication to the BQ79606A-Q1 device is done via dedicated UART interface. Additionally, an isolated, differential daisy-chain communication interface that supports either capacitor or transformer isolation allows the host to communicate with the entire battery stack. The daisy-chain communication interface can be configured (optional) in a ring architecture that allows the host to talk to devices at either end of the stack in cases of communication line breaks.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet BQ79606A-Q1 SafeTI™ Precision Monitor With Integrated Hardware Protector for Automotive Battery Pack Applications datasheet Apr. 25, 2019
Application notes BQ79606A-Q1 Software Design Reference (Rev. E) Aug. 07, 2019
Application notes BQ79606 Daisy Chain Communication Robustness and Timing Jun. 26, 2019
Application notes Safety Manual for BQ79606A-Q1 Precision Monitor (Rev. C) May 06, 2019
User guides Scalable Automotive HEV/EV 6s to 96s Li-Ion Cell Supervision Demonstrator (Rev. A) Apr. 30, 2019
User guides BQ79606A-Q1 GUI User's Guide (Rev. C) Apr. 29, 2019
Application notes BQ79606A-Q1 Design Recommendation (Rev. C) Apr. 26, 2019
User guides BQ79606A-Q1 Evaluation Module (Rev. E) Apr. 26, 2019
Application notes BQ79606AA-Q1 Example Bring Up Procedure Mar. 16, 2018

Design & development

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

Hardware development

document-generic User guide

The bq79606EVM is an evaluation board for the bq79606A -Q1. The bq79606A -Q1 provides simultaneous, high accuracy, channel measurements for three to six battery cells. With the inclusion of a daisy chain communication port, the bq79606A -Q1 device is stackable (up to 64 devices) to support the large (...)

  • Highly accurate monitoring of 6 li-ion cells
  • Integrated protector
  • Passive balancing
  • 1Mb/s stackable isolated differential UART

Software development

BQ79606A-Q1 example code of automotive battery pack applications
BQ79606A-EXAMPLE-CODE — The BQ79606A-EXAMPLE-CODE is BQ79606A-Q1 example code of automotive battery pack applications for the Hercules™ LAUNCHXL-TMS57004 LaunchPad™ development kit.

Reference designs

Scalable automotive HEV/EV 6s to 96s lithium ion cell supervision demonstrator reference design
TIDA-01537 — This reference design is a small-sized cell supervision demonstrator design for a centralized battery management system (BMS). Its configurable capacitive isolation daisy chain solution enables monitoring and protecting cells ranging from 6-series to 96-series, which allows its use in BMS systems (...)
document-generic Schematic document-generic User guide

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