Produktdetails

Number of series cells (min) 6 Vin (max) (V) 80 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer Number of series cells (max) 16 Operating temperature range (°C) -40 to 125 Rating Catalog Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Communication interface Daisy chain, SPI controller, UART Operating current (typ) (µA) 9000
Number of series cells (min) 6 Vin (max) (V) 80 Features Cell balancing, Integrated ADC, Multi-cell support, Open-wire detection, Overtemperature protection, Overvoltage protection, Separate MCU requirement, Stackable (built-in interface), Temperature sensing, Undertemperature protection, Undervoltage protection Device type Cell monitor and balancer Number of series cells (max) 16 Operating temperature range (°C) -40 to 125 Rating Catalog Battery overvoltage protection (min) (V) 2.7 Battery overvoltage protection (max) (V) 4.5 Communication interface Daisy chain, SPI controller, UART Operating current (typ) (µA) 9000
HTQFP (PAP) 64 144 mm² 12 x 12
  • ±1.5-mV ADC accuracy
  • 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
  • Bus bar connection and measurement support
  • 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
  • Built-in SPI controller
  • ±1.5-mV ADC accuracy
  • 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
  • Bus bar connection and measurement support
  • 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
  • Built-in SPI controller

The BQ79616 device provides high-accuracy cell voltage measurements in less than 200 µs for 16-series battery modules in high-voltage battery management systems in HEV/EV. The monitor 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 Energy Storage System (ESS). This device also includes eight GPIOs or auxiliary inputs that can be used for external thermistor measurements.

Host communication to the BQ79616 device can be connected via the device’s 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.

The BQ79616 device provides high-accuracy cell voltage measurements in less than 200 µs for 16-series battery modules in high-voltage battery management systems in HEV/EV. The monitor 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 Energy Storage System (ESS). This device also includes eight GPIOs or auxiliary inputs that can be used for external thermistor measurements.

Host communication to the BQ79616 device can be connected via the device’s 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.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ79616 16-Series Battery Monitor, Balancer, and Integrated Hardware Protector datasheet PDF | HTML 30 Jun 2023
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note BQ79616-Q1 Daisy Chain Communications PDF | HTML 26 Okt 2023
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML 20 Okt 2023
EVM User's guide BQ79616-Q1, BQ75614-Q1, BQ79656-Q1 Evaluation Modules User's Guide (Rev. C) PDF | HTML 30 Aug 2023
Application note BQ79616-Q1 Software Design Reference (Rev. B) PDF | HTML 21 Aug 2023
Application brief Expanding Functionality of Cell Supervision Unit in Battery Management Systems PDF | HTML 14 Sep 2021
User guide BQ79616-Q1 and BQ75614-Q1 Graphical User Interface (GUI) User's Guide 14 Dez 2020

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

BQ79616EVM-021 — Evaluationsmodul BQ79616 für Präzisions-Batteriemonitor 16-S für den Automobilbereich mit Balancer u

Das Evaluierungsmodul (EVM) BQ79616 ist eine Entwicklungsplattform für BQ79616-Q1. BQ79616-Q1 bietet hohe Genauigkeit und Kanalmessungen für sechs bis 16 Batteriezellen. Ein in Reihe gesteckter Kommunikationsanschluss macht den, BQ79616-Q1 stapelbar (bis zu 35 Geräte), sodass er für (...)

Benutzerhandbuch: PDF | HTML
Referenzdesigns

TIDA-010271 — Stackable battery management unit reference design for energy storage systems

This is a full cell-temperature sensing and high cell voltage accuracy Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery pack (32s) reference design. The design monitors each cell voltage, cell temperature and protects the battery pack to secure safe use. This design uses onboard and (...)
Design guide: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTQFP (PAP) 64 Ultra Librarian

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