Texas Instruments BQ79656PAPRQ1
- Part Number:
- BQ79656PAPRQ1
- Manufacturer:
- Texas Instruments
- Ventron No:
- 6369509-BQ79656PAPRQ1
- Description:
- Automotive 16-S precision battery monitors, balancer, current sensor with ASIL-D compliance
- Datasheet:
- bq79656-q1
- Number of series cells (min)6
- Vin (max) (V)80
- FeaturesCell balancing
- Device typeCell monitor and balancer
- Number of series cells (max)16
- Operating temperature range (°C)-40 to 125
- RatingAutomotive
- Battery overvoltage protection (min) (V)2.7
- Battery overvoltage protection (max) (V)4.5
- TI functional safety categoryFunctional Safety-Compliant
- Communication interfaceDaisy Chain
- Operating current (typ) (μA)9000
The BQ7965x-Q1 family of devices provides high-accuracy cell voltage measurements for a minimum of 6S to a maximum of 12S (BQ79652-Q1), 14S (BQ79654-Q1), or 16S (BQ79656-Q1) 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 raring, differential RC filters on the cell input channels. The integrated, post-ADC, low-pass filters enable filtered, DC-like, voltage measurements. This family of devices 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.
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 BQ7965x-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.
Power Supply Support Circuit, Fixed, 16 Channel, PQFP64
AUTOMOTIVE 16-S PRECISION BATTER
-
ImagePart NumberManufacturerNumber of series cells (min)Vin (max) (V)FeaturesDevice typeNumber of series cells (max)Operating temperature range (°C)RatingBattery overvoltage protection (min) (V)Battery overvoltage protection (max) (V)TI functional safety categoryCommunication interfaceOperating current (typ) (μA)View Compare
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BQ79656PAPRQ1680Cell balancingCell monitor and balancer16-40 to 125Automotive2.74.5Functional Safety-CompliantDaisy Chain9000-
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-15Integrated ADCPack monitor--40 to 125Automotive2.74.5Functional Safety-CompliantDaisy Chain10400
-
680Cell balancingCell monitor and balancer14-40 to 125Automotive2.74.5Functional Safety-CompliantDaisy Chain9000
-
--Separate MCU requirementCommunication device--40 to 125Automotive--Functional Safety-CompliantDaisy Chain2500
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