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Data Sheet
BQ79731-Q1 Pack Voltage Current and Isolation
Resistance Monitor for HV Automotive BMS Applications
1 Features
- AEC-Q100 qualified –40°C to +125°C
- Functional safety compliant
- Documentation to aid ISO
26262 system design
- Systematic capability up
to ASIL D
- Hardware capability up to
ASIL D
- 17 single-ended voltage channels
- High voltage pack, link,
charge measurement accuracy update to 0.2%
- Pack and cell VI sync to
64μS
- 2 independent current sense ADCs (BQ79731-Q1)
- ±0.15% gain error
drift
- Input range = ±275mV
- 2 Over current detect comparators (BQ79731-Q1)
- ±1% accuracy
- Selectable bi-directional
thresholds
- Programmable OC
- Integrated Coulomb counting (BQ79731-Q1)
- 15 GPIO inputs as IO, I2C, SPI, ADC and temp
sense
- Dedicated MOSFET switch drive pins
- Intelligent SPI contoller HUB
- Support multiple SPI
peripheral devices
- HW pin to trigger
contactor drivers and Pyro Fuse drivers
- Stackable and register map compatible with
BQ7971x-Q1 cell monitors
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![](https://id.rlcdn.com/464526.gif)