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BQ79758B-Q1

Name: BQ79758B-Q1
Brand: TI
SKU: BQ79758B-Q1
Price: 7.99 USD

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具有电流检测功能、符合 ASIL-D 标准的汽车类 18 节串联精密电池监测器和平衡器

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BQ79758B-Q1

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产品详情

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HTQFP (PAP)

64

144 mm² 12 x 12

AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
Functional Safety-Compliant
- Documentation to aid ISO 26262 system design
- Systematic capability up to ASIL D
- Hardware capability up to ASIL D
Measure 9 to 18 batteries in series per device, stackable up to 64 devices
Dedicated ADC with typical ±1mV accuracy
Two independent Current Sense ADCs with ±0.1% gain error drift and input range +/-275mV.
Programmable Over Current Detection comparators
Support limp home mode with full redundancy
Integrated post-ADC configurable digital low-pass filters
Supports busbar without affecting measurement accuracy
10 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
Internal cell balancing
- Balancing at 300mA
- User controlled PWM adjustment cell balancing current
- Built-in balancing thermal management with automatic pause and resume control
Robust daisy chain communication and support Ring Architecture
Hardware reset by host simulates POR-like event without battery removal
On chip memory for one time custom programming
Low power mode current <6µA
Compatible with BQ79600-Q1 with SPI/UART interface

AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
Functional Safety-Compliant
- Documentation to aid ISO 26262 system design
- Systematic capability up to ASIL D
- Hardware capability up to ASIL D
Measure 9 to 18 batteries in series per device, stackable up to 64 devices
Dedicated ADC with typical ±1mV accuracy
Two independent Current Sense ADCs with ±0.1% gain error drift and input range +/-275mV.
Programmable Over Current Detection comparators
Support limp home mode with full redundancy
Integrated post-ADC configurable digital low-pass filters
Supports busbar without affecting measurement accuracy
10 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
Internal cell balancing
- Balancing at 300mA
- User controlled PWM adjustment cell balancing current
- Built-in balancing thermal management with automatic pause and resume control
Robust daisy chain communication and support Ring Architecture
Hardware reset by host simulates POR-like event without battery removal
On chip memory for one time custom programming
Low power mode current <6µA
Compatible with BQ79600-Q1 with SPI/UART interface

The BQ79758B-Q1 provides high-accuracy cell voltage measurements for up to 18S battery modules in high-voltage battery management systems in xEV/EV. The monitor 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. This device has a state-of-the-art ADC architecture/measurement system meeting stringent automotive standard and safety requirements. With the daisy-chain isolated by transformer (or capacitor), the device is designed for centralized or distributed architectures in xEV powertrain.

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