BQ79606A-Q1 Series
6-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance
Manufacturer: Texas Instruments
Catalog
6-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance
Key Features
• Qualified for automotive applicationsAEC-Q100 Qualified with the following results:Device temperature grade 2: –40°C to +105°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BVoltage monitor, temperature monitor and communication functions: SafeTI™-26262 ASIL-D compliant± 1.1mV Cell voltage measurement accuracy with an offsetConfigurable digital low pass filter as low as 1.2HzSupports simultaneous cell voltage measurementsFull-accuracy stack measurements in less than 1 ms (for 96 cells)Optional ring architecture to ensure stack communication even with communication cable breakMonitors 3 to 6 cell connections and up to 6 NTC/auxiliary channelsIntegrated 16-bit analog-to-digital converters (ADC)Integrated high-voltage AFE filter componentsDesigned for robust hot-plug performanceStackable configuration up to 64 devices (1 base + 63 stack, 384-series cells)Isolated differential daisy chain communicationSupports transformer or capacitor based isolationConfigurable SINC3digital filterIntegrated hardware protectorSecondary protection for cell overtemperature and undertemperatureSecondary protection for cell overvoltage and undervoltageHardware protector function: SafeTI™-26262 ASIL-B compliantIntegrated cell-balancing MOSFET’s up to 150 mADesigned to pass BCI testingUART Host interfaceQualified for automotive applicationsAEC-Q100 Qualified with the following results:Device temperature grade 2: –40°C to +105°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BVoltage monitor, temperature monitor and communication functions: SafeTI™-26262 ASIL-D compliant± 1.1mV Cell voltage measurement accuracy with an offsetConfigurable digital low pass filter as low as 1.2HzSupports simultaneous cell voltage measurementsFull-accuracy stack measurements in less than 1 ms (for 96 cells)Optional ring architecture to ensure stack communication even with communication cable breakMonitors 3 to 6 cell connections and up to 6 NTC/auxiliary channelsIntegrated 16-bit analog-to-digital converters (ADC)Integrated high-voltage AFE filter componentsDesigned for robust hot-plug performanceStackable configuration up to 64 devices (1 base + 63 stack, 384-series cells)Isolated differential daisy chain communicationSupports transformer or capacitor based isolationConfigurable SINC3digital filterIntegrated hardware protectorSecondary protection for cell overtemperature and undertemperatureSecondary protection for cell overvoltage and undervoltageHardware protector function: SafeTI™-26262 ASIL-B compliantIntegrated cell-balancing MOSFET’s up to 150 mADesigned to pass BCI testingUART Host interface
Description
AI
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.
