Ti Bq79631-Q1 Battery Power Charge Management Chip Electronic Components Integrated Circuit IC.

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Application: Standard Generalized Integrated Circuit
• Type: Digital / Analog IC
• Model NO.: BQ79631-Q1
• Package/Pins: Vssop (Dgk) 8
• Rating: Catalog
• RoHS: Yes
• Reach: Yes
• Operating Temperature Range (°c): -40 to 125
• Transport Package: 2, 500 Large T&R
• Specification: 14.7 mm² 3 x 4.9
• Trademark: TI
• HS Code: 8542399000
• Production Capacity: 60000

Product Description

Quality information

RatingAutomotive

RoHSYes

REACHYes

Lead finish / Ball materialNIPDAU

MSL rating / Peak reflowLevel-3-260C-168 HR

Packaging information

Package | PinsHTQFP (PAP) | 64

Operating temperature range (°C)-40 to 125

Package qty | Carrier1,000 | LARGE T&R

Features for the BQ79631-Q1

• 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
• Differential voltage measurements with integrated filtering
  • Pack+ , Fuse, Link±, Charge± measure
  • Isolation resistance voltage measurement
• Integrated precision current measurement
  • Support low-side shunt resistor
• Insulation resistance monitoring capability
• 8 GPIO inputs as IO, SPI, ADC, and temperature sense
• Isolated differential daisy-chain communication with optional ring architecture
  • Simplifies BJB/BDU system by eliminating safety MCU, CAN transceivers, and multi-wire interface
• UART host interface
• Synchronized current and voltage measurements
• Stackable as well as syncs with other cell and UI monitors 16S (BQ79616-Q1, BQ79656-Q1), 14S (BQ79614-Q1, BQ79654-Q1), 12S (BQ79612-Q1, BQ79652-Q1) and BQ79631
• Built-in SPI master

Description for the BQ79631-Q1

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 device's 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.