1 Features

• ±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

2 Applications

• Battery Management System (BMS) in hybrid and

electric powertrain systems

• Energy storage battery packs with Battery

Management Systems

3 Description

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.