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BQ79606A-Q1

ACTIVE

6-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance

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Data sheet

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BQ79616-Q1 ACTIVE 16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance ASIL-D compliant with improved cell voltage measurements within 200 µs for all cell channels and balancing current up to 240 mA

BQ79606A-Q1

ACTIVE
Data sheet Order now

Product details

Number of series cells (min) 3 Vin (max) (V) 33 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer Number of series cells (max) 6 Operating temperature range (°C) -40 to 105 Rating Automotive Battery overvoltage protection (min) (V) 2 Battery overvoltage protection (max) (V) 5 TI functional safety category Functional Safety-Compliant Communication interface Differential Daisy Chain, UART Operating current (typ) (µA) 4200
Number of series cells (min) 3 Vin (max) (V) 33 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer Number of series cells (max) 6 Operating temperature range (°C) -40 to 105 Rating Automotive Battery overvoltage protection (min) (V) 2 Battery overvoltage protection (max) (V) 5 TI functional safety category Functional Safety-Compliant Communication interface Differential Daisy Chain, UART Operating current (typ) (µA) 4200
HTQFP (PHP) 48 81 mm² 9 x 9
  • 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
  • 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

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.

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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* Data sheet BQ79606A-Q1 SafeTI™ Precision Monitor With Integrated Hardware Protector for Automotive Battery Pack Applications datasheet PDF | HTML 25 Apr 2019

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