Texas Instruments BQ79631PAPRQ1
- Part Number:
- BQ79631PAPRQ1
- Manufacturer:
- Texas Instruments
- Ventron No:
- 6369506-BQ79631PAPRQ1
- Description:
- Automotive high-voltage battery pack monitor with voltage, current and insulation resistance sensing
- Datasheet:
- bq79631-q1
- Vin (max) (V)15
- FeaturesIntegrated ADC
- Device typePack monitor
- 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)10400
BQ79631-Q1 provides high-accuracy measurement capable of measuring divided down voltages from high voltage nodes such as Pack (HV Battery Positive terminal), Fuse, Charge (Port), Link (Load) in a battery junction box (BJB) or battery disconnect unit (BDU) system. Key voltage measurements can make use of the integrated digital low-pass filters. The device has a highly accurate integrated current sense ADC capable of measuring current in low-side shunt resistor. The device is capable of measuring the insulation resistance with internal ADC and able to control any switching scheme needed for this measurement. There are eight GPIOs/auxillary inputs that can be used for thermistor measurement, driving relays, measuring voltages, and being a master SPI interface to peripheral SPI devices. The isolated bi-directional daisy-chain ports support both capacitor or transformer based isolation. The device also supports communication over UART.
Host communication to the BQ79631-Q1 can be connected via the devices dedicated UART interface or through a communication bridge device, BQ79600-Q1. Additionally, an isolated, differential daisy-chain communication interface allows the host to communicate with the other UIR monitors and even cell monitors 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.
AUTOMOTIVE 16-S BATTERY JUNCTION
Battery Management
-
ImagePart NumberManufacturerVin (max) (V)FeaturesDevice typeOperating temperature range (°C)RatingBattery overvoltage protection (min) (V)Battery overvoltage protection (max) (V)TI functional safety categoryCommunication interfaceOperating current (typ) (μA)Number of series cells (min)Number of series cells (max)View Compare
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BQ79631PAPRQ115Integrated ADCPack monitor-40 to 125Automotive2.74.5Functional Safety-CompliantDaisy Chain10400---
-
80Cell balancingCell monitor and balancer-40 to 125Automotive2.74.5Functional Safety-CompliantDaisy Chain9000612
-
33Cell balancingCell monitor and balancer-40 to 105Automotive25Functional Safety-CompliantDifferential Daisy Chain420036
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33Cell balancingCell monitor and balancer-40 to 105Automotive25Functional Safety-CompliantDifferential Daisy Chain420036
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