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User's Guide
SLVU925B – April 2014 – Revised July 2014
bq76930 and bq76940 Evaluation Module User's Guide
The bq76930EVM evaluation module (EVM) is a complete evaluation system for the bq76930, a 6-cell to
10-cell Li-Ion battery analog front end (AFE) integrated circuit. The bq76940EVM evaluation module
(EVM) is a complete evaluation system for the bq76940, a 9-cell to 15-cell Li-Ion battery analog front end
(AFE) integrated circuit. The EVM consists of a circuit module which can be used for simple evaluation of
the AFE and bq78350 gauge functions. The circuit module includes one bq76930 or bq76940 integrated
circuit (IC), sense resistor, power FETs, and all other onboard components necessary to protect the cells
from overcharge, over discharge, short circuit, and overcurrent discharge in a 10- or 15-series cell Li-Ion
or Phosphate battery pack. The circuit module connects directly across the cells in a battery. With a
compatible interface board and Microsoft
®
Windows
®
based PC graphical user interface (GUI) software,
the user can view the device registers, adjust protection limits and enable FET control outputs.
1 Features
• Complete evaluation system for the bq76930 or bq76940 Li-Ion and Phosphate battery AFE
• Populated circuit module for 10-cell or 15-cell configuration for quick setup
• Power connections available on screw terminals
• Communication signals available on 4-pin connector
• Resistor cell simulator for quick setup with only a power supply
• PC software available for configuration
1.1 Kit Contents
• bq769x0 circuit module
• Cable to connect the EVM to an EV2400 or EV2300 interface board
1.2 Ordering Information
For complete ordering information, refer to the product folder at www.ti.com.
Table 1. Ordering Information
EVM Part Number Chemistry Configuration Capacity
bq76930EVM Li-Ion 10 cells Any
bq76940EVM Li-Ion 15 cells Any
NOTE: Although capacity is shown as Any , practical limits of the physical construction of the module
will typically limit the operation of the EVM to a 1P or 2P battery construction. Refer to the
physical construction section for board details.
1.3 bq769x0 Circuit Module Performance Specification Summary
This section summarizes the performance specifications of the bq769x0 circuit module in its default 10- or
15-cell configuration.
Typical voltage depends on the number of cells configured. Typical current depends on the application.
Board cooling may be required for continuous operation at or below maximum current.
6 bq76930 and bq76940 Evaluation Module User's Guide SLVU925B – April 2014 – Revised July 2014
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