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BQ79612PAPRQ1 +BOM

Automotive 12-S precision battery monitor, balancer and integrated protector with ASIL-D compliance

Produttore:

Texas Instruments, Inc
ProduttorePart #:

BQ79612PAPRQ1
Scheda dati:

BQ79612PAPRQ1 Scheda dati (PDF)
Series:

Automotive, AEC-Q100, Functional Safety (FuSa)
Function:

Battery Monitor
Battery Chemistry:

Lithium Ion
Number Of Cells:

1
EDA/CAD Modelli:

Richiedi modelli CAD gratuiti per BQ79612PAPRQ1

BQ79612PAPRQ1 Descrizione generale

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.

The inclusion of the isolated, bidirectional, daisy chain ports supports both capacitor- and transformer-based isolation, allowing the use of the most effective components for centralized or distribution architectures commonly found in the xEV powertrain system. This device also includes eight GPIOs or auxiliary inputs that can be used for external thermistor measurements.

Host communication to the BQ7961x-Q1 family of devices can be connected via the devices dedicated UART interface or through a communication bridge device, BQ79600. Additionally, an isolated, differential daisy-chain communication interface allows the host to communicate with the entire battery stack over a single interface. in the event of a communication line break, the daisy-chain communication interface is configurable to a ring architecture that allows the host to talk to devices at either end of the stack.

Caratteristiche principali

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, BQ79656-Q1) , 14S (BQ79614-Q1, BQ79654-Q1), and 12S (BQ79612-Q1, BQ79652-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

Specifiche

Category	Integrated Circuits (ICs)Power Management (PMIC)Battery Management	Series	Automotive, AEC-Q100, Functional Safety (FuSa)
Function	Battery Monitor	Battery Chemistry	Lithium Ion
Number of Cells	1	Fault Protection	Over Temperature
Interface	SPI, UART	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount	Base Product Number	BQ79612

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