BQ75614-Q1
Automotive 16-S precision battery monitor, balancer and integrated protector with ASIL-D compliance
BQ75614-Q1
- 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, BQ79616H-Q1, BQ79656-Q1) , 14S (BQ79614-Q1, BQ79654-Q1), and 12S (BQ79612-Q1, BQ79652-Q1)
- Standalone monitor 48 V system (BQ75614-Q1)
- Supports current-sense measurement
- Direct support on fuse and relay open and close diagnostics
- Built-in redundancy path for voltage and temperature and current diagnostics
- Highly accurate cell voltage measurements within 128 µs for all cell channels
- Integrated post-ADC configurable digital low-pass filters
- 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
- 5 V LDO output to power external digital isolator
- UART host interface
- Built-in SPI master
The BQ75614-Q1 device provides high-accuracy cell voltage measurements up to 16S battery modules in less than 200 µs while these devices also support shunt-resistor current sense measurement. The integrated front-end filters enable the system to implement with simple, low voltage rated, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements. This device also supports integrated current sensing capabilities with option to synchronize with cell voltage measurements for better state of charge (SOC) calculation. The device supports autonomous internal cell balancing with temperature monitoring to auto-pause and resume balancing to avoid an overtemperature condition.
This device also includes eight GPIOs or auxiliary inputs that can be used for external thermistor measurements.
Host communication to the BQ75614-Q1 can be connected via the devices dedicated UART interface.
All references to the BQ79616-Q1 device also apply to the BQ79616H-Q1 device.
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Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
BQ75614EVM-021 — Precision monitor with integrated hardware protector and current sense evaluation module
BQ7X61X-Q1-EVALUATION — BQ7x61x-Q1 evaluation files
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BQ7X61X-Q1-FMEDA — BQ7x61x-Q1 FMEDA files
Supported products & hardware
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BQ7X61X-Q1-FUNCTIONAL-SAFETY-DOCS — BQ7x61x-Q1 functional safety documents
Supported products & hardware
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SLVC810 — BQAutoEval GUI 1.0.4
Supported products & hardware
Products
Battery monitors & balancers
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Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
HTQFP (PAP) | 64 | Ultra Librarian |
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