Texas Instruments bq75614EVM-021 Monitor Evaluation Module (EVM)

Texas Instruments bq75614EVM-021 Monitor Evaluation Module (EVM) is designed to evaluate the BQ75614-Q1. The BQ75614-Q1 provides high-accuracy, cell voltage measurements for 6 to 14 battery cells. With the inclusion of an integrated current monitor ADC, the BQ75614-Q1 device is also able to provide highly accurate current sensing measurements for performing state-of-charge calculations of the battery pack.

The Texas Instruments bq75614EVM-021 is equipped with precision measurement and synchronous communication to enable a master controller to perform State of Charge (SOC) and State of Health (SOH) estimation. Highly-accurate cell voltages and a fast sampling time for the entire battery pack allows more efficient operation of battery modules and more accurate SOC and SOH calculations. Communication with stacked BQ79616EVM-021s is via an isolated daisy-chain differential bus. For the standalone BQ75614EVM-021, SOC and SOH are further assisted by an integrated current sense ADC.

Control a single evaluation module or multiple stacked evaluation modules using a PC-hosted GUI. Communication between the PC and the base device in a stack of BQ79616EVM-021 (or a single standalone BQ75614EVM-021 device) is via a USB2ANY UART interface. For a stack of BQ79616EVM devices, communication between all other evaluation module in the stack occurs via the isolated, daisy-chain differential communication bus. The PC GUI allows configuration of the evaluation modules to monitor cells and other analog data channels, control balancing, and monitor details of any faults.

Features

Internal passive cell balancing
Isolated differential daisy chain communications with optional ring architecture
Flexible architecture for 6 to 16 cell applications
UART interface
High-accuracy cell voltage measurement