The BQ79606APHPTQ1 device provides simultaneous, high accuracy, channelmeasurements for three to six battery cells. With the inclusion of a daisy chain communicationport, the BQ79606APHPTQ1 device is stackable (up to 64 devices) tosupport the large stack configurations found in battery packs for electrified automotive drivetrains. Providing a Delta Sigma converter per cell input, the BQ79606APHPTQ1 allowssimultaneous measurement of the battery voltages.
The BQ79606APHPTQ1 includes an auxiliary ADC that supports cell temperaturemeasurements for up to six NTCs as well as internal rails to enable safety checks for the device. Adie temperature measurement ADC is also included to provide temperature correction to enable highaccuracy results over an extended temperature range.
Host communication to the BQ79606APHPTQ1 device is done via dedicated UARTinterface. Additionally, an isolated, differential daisy-chain communication interface thatsupports either capacitor or transformer isolation allows the host to communicate with the entirebattery stack. The daisy-chain communication interface can be configured (optional) in a ringarchitecture that allows the host to talk to devices at either end of the stack in cases ofcommunication line breaks.
Feature
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
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 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
Configurable SINC3 digital filter
Integrated hardware protector
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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
