BQ75614-Q1 Series
Automotive 16-S precision battery monitor, balancer and integrated protector with ASIL-D compliance
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive 16-S precision battery monitor, balancer and integrated protector with ASIL-D compliance
| Part | Package / Case | Mounting Type | Interface | Supplier Device Package | Fault Protection | Number of Cells | Battery Chemistry | Function | Grade | Operating Temperature [Max] | Operating Temperature [Min] | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ75614PAPRQ1 | 64-PowerTQFP | Surface Mount | SPI, UART | 64-HTQFP (10x10) | Over Temperature | 1 | Lithium Ion | Battery Monitor | Automotive | 125 °C | -40 °C | AEC-Q100 |
Key Features
• Qualified for automotive applicationsAEC-Q100 Qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CompliantDeveloped for functional safety applicationsDocumentation to aid ISO 26262 system designSystematic capability up to ASIL DHardware capability up to ASIL D+/- 1.5mV ADC accuracyPin-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 measurementDirect support on fuse and relay open and close diagnosticsBuilt-in redundancy path for voltage and temperature and current diagnosticsHighly accurate cell voltage measurements within 128 µs for all cell channelsIntegrated post-ADC configurable digital low-pass filtersBuilt-in host-controlled hardware reset to emulate POR-like device resetSupports internal cell balancingBalancing current at 240 mABuilt-in balancing thermal management with automatic pause and resume control5 V LDO output to power external digital isolatorUART host interfaceBuilt-in SPI masterQualified for automotive applicationsAEC-Q100 Qualified with the following results:Device temperature grade 1: –40°C to +125°C ambient operating temperature rangeDevice HBM ESD classification level 2Device CDM ESD classification level C4BFunctional Safety-CompliantDeveloped for functional safety applicationsDocumentation to aid ISO 26262 system designSystematic capability up to ASIL DHardware capability up to ASIL D+/- 1.5mV ADC accuracyPin-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 measurementDirect support on fuse and relay open and close diagnosticsBuilt-in redundancy path for voltage and temperature and current diagnosticsHighly accurate cell voltage measurements within 128 µs for all cell channelsIntegrated post-ADC configurable digital low-pass filtersBuilt-in host-controlled hardware reset to emulate POR-like device resetSupports internal cell balancingBalancing current at 240 mABuilt-in balancing thermal management with automatic pause and resume control5 V LDO output to power external digital isolatorUART host interfaceBuilt-in SPI master
Description
AI
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 device’s dedicated UART interface.
All references to the BQ79616-Q1 device also apply to the BQ79616H-Q1 device.
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 device’s dedicated UART interface.
All references to the BQ79616-Q1 device also apply to the BQ79616H-Q1 device.