16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance
Product details
Parameters
Package | Pins | Size
Features
- Qualified for automotive applications
- AEC-Q100 Qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
- Functional Safety-Compliant
- Developed for functional safety applications
- Documentation to aid ISO 26262 system design
- Systematic capability up to ASIL D
- Hardware capability up to ASIL D
- +/- 1.5mV ADC accuracy
- Pin-package and software compatible device family:
- Stackable monitor 16S (BQ79616-Q1), 14S (BQ79614-Q1), and 12S (BQ79612-Q1)
- Standalone monitor 48 V system (BQ75614-Q1)
- Built-in redundancy path for voltage and temperature diagnostics
- Highly accurate cell voltage measurements within 128 µs for all cell channels
- Integrated post-ADC configurable digital low-pass filters
- Supports bus bar connection and measurement
- Built-in host-controlled hardware reset to emulate POR-like device reset
- Supports internal cell balancing
- Balancing current at 240 mA
- Built-in balancing thermal management with automatic pause and resume control
- Isolated differential daisy chain communication with optional ring architecture
- Embedded fault signal and heartbeat through communication line
- UART/SPI host interface/communication bridge device BQ79600-Q1
- Built-in SPI master
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Description
BQ79612-Q1, BQ79614-Q1 and BQ79616-Q1 provide high-accuracy cell voltage measurements in less than 200 µs for 12S, 14S and 16S battery modules in high-voltage battery management systems in HEV/EV. The family of monitors offers different channel options in the same package type, providing pin-to-pin compatibility and supporting high reuse of the established software and hardware across any platform. The integrated front-end filters enable the system to implement with simple, low voltage rating, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements for better state of charge (SOC) calculation. This device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.
More information
- Full data sheet and other design resources are available. Request now
- Functional safety documentation to aid ISO 26262 system design is available. Request now
- The TÜV SÜD Functional safety concept assessment on the TI wireless battery management system is available. Request now
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Highly accurate monitoring of 16 li-ion cells
- Integrated protector
- Internal cell balancing
- 1-Mb/s stackable isolated differential-UART
- ASIL-D voltage/temperature/communication
Software development
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
HTQFP (PAP) | 64 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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