Packaging information
| Package | Pins HTQFP (PHP) | 48 |
| Operating temperature range (°C) -40 to 105 |
| Package qty | Carrier 1,000 | LARGE T&R |
Features for the BQ79606A-Q1
- 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
Description for the BQ79606A-Q1
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.