New high-accuracy battery monitor and balancer from TI improves performance of wired and wireless battery management systems
Texas Instruments has launched the BQ79616-Q1, an automotive battery monitor and balancer capable of high-accuracy voltage measurements in systems up to 800 V. This device aids compliance with Automotive Safety Integrity Level (ASIL) D, crucial for hybrid electric and electric vehicles. Key features include a patented 'wake-up-at-fault' capability, precise measurements with less than 2 mV error, and rapid diagnostics at 100 ms for battery failures. The product aims to enhance system reliability and reduce costs for automotive manufacturers.
- Launch of BQ79616-Q1 improves high-accuracy voltage measurement for systems up to 800 V.
- Streamlines ASIL D compliance, beneficial for hybrid electric and electric vehicles.
- Features patented 'wake-up-at-fault' capability, facilitating battery power conservation.
- Delivers battery state-of-charge measurements with less than 2 mV error, enhancing reliability.
- Rapid fault diagnosis at 100 ms improves system reliability and safety.
- None.
DALLAS, Jan. 7, 2021 /PRNewswire/ -- Texas Instruments (TI) (Nasdaq: TXN) today introduced a new automotive battery monitor and balancer that reports high-accuracy voltage measurements in systems up to 800 V. In addition, the BQ79616-Q1 streamlines Automotive Safety Integrity Level (ASIL) D compliance in hybrid electric vehicles (HEVs) and electric vehicles (EVs). For more information, see www.ti.com/BQ79616-Q1-pr.
Filtering system-level noise to accurately measure battery-cell voltage and temperature and reliably reporting this information to the microcontroller (MCU) are key design challenges for automotive manufacturers. The BQ79616-Q1 addresses both of these challenges to help engineers achieve battery safety goals and maximize distance per charge in wired and wireless battery management systems.
The BQ79616-Q1 battery monitor and balancer is the industry's first to include a patented wake-up-at-fault feature. When paired with the BQ79600-Q1 SPI/UART communication interface, it enables total system shutdown when the vehicle is parked or turned off. This helps design engineers conserve battery power, improve cell balancing and support safety requirements. To learn more about TI's wake-up-at-fault feature, read the technical article, "Conserve battery power in HEV/EVs with automatic host reverse wake-up."
Maximize driving range with high-accuracy battery monitors and balancers
The BQ79616-Q1 is the first in a next-generation family of TI battery monitors and balancers to support high-accuracy monitoring for a broad spectrum of battery chemistries, including lithium-iron phosphate (LiFePO4). This enables automotive manufacturers to more precisely measure battery state-of-charge and state-of-health, thereby reducing cost. The BQ79616-Q1's integrated digital low-pass filter and high-precision analog-to-digital converter optimize signal measurement accuracy, delivering cell-voltage measurements with less than 2 mV of error.
Streamline ASIL D certification with the industry's fastest diagnostics
TI's new monitor and balancer meets component-level requirements of ISO 26262, supporting ASIL D compliance for voltage measurement, temperature measurement and communication – dramatically reducing bill of materials (BOM) and software overhead. With the industry's fastest time in diagnosing battery failures, 100 ms in 400-V systems, the BQ79616-Q1 enables greater system reliability and battery safety.
Improve system reliability with robust communication and advanced thermal management
The BQ79616-Q1 offers robust electromagnetic compatibility (EMC) performance to withstand the harsh, noisy environments of HEVs and EVs without compromising the reliability of daisy-chain communication. In addition, the device's pin rating enables it to withstand high-voltage transients and hot-plug events, and it incorporates autonomous cell balancing to simplify thermal management. To learn more about improving system reliability with advanced thermal management, read the technical article, "Enhance thermal management in EVs with autonomous cell balancing."
Scale battery designs to reduce cost and time to market
TI's new family of monitors and balancers offers multiple channel options in the same package, providing pin-to-pin compatibility and
Package, availability and pricing
The 16-channel BQ79616-Q1 is available now for purchase in volume on TI.com in a 10-mm-by-10-mm, 64-pin thermally enhanced thin quad flat package (HTQFP), priced at US
About Texas Instruments
Texas Instruments Incorporated (Nasdaq: TXN) is a global semiconductor company that designs, manufactures, tests and sells analog and embedded processing chips for markets such as industrial, automotive, personal electronics, communications equipment and enterprise systems. Our passion to create a better world by making electronics more affordable through semiconductors is alive today, as each generation of innovation builds upon the last to make our technology smaller, more efficient, more reliable and more affordable – making it possible for semiconductors to go into electronics everywhere. We think of this as Engineering Progress. It's what we do and have been doing for decades. Learn more at TI.com.
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