1
Features
1.1
Kit Contents
1.2
Ordering Information
2
bq20z40/bq29330-Based Circuit Module
2.1
Circuit Module Connections
Features
www.ti.com
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Complete evaluation system for the bq20z40 SBS 1.1-compliant advanced gas gauge with Impedance
Track™ technology, bq29330 analog front end (AFE) and protection IC, and bq29412 independent
overvoltage protection integrated circuit (IC)
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Populated circuit module for quick setup
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Link to software that allows data logging for system analysis
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bq20z40/bq29330/bq29412 circuit module
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Set of support documentation
Table 1. Ordering Information
EVM PART NUMBER
CHEMISTRY
CONFIGURATION
CAPACITY
bq20z40EVM-001
Li-ion
2, 3, or 4 cell
Any
The bq20z40/bq29330/bq29412-based circuit module is a complete and compact example solution of a
bq20z40 and bq29330 circuit for battery management and protection of Li-ion or Li-polymer packs. The
circuit module incorporates a bq20z40 battery monitor IC, bq29330 AFE and protection IC, bq29412
independent overvoltage protection IC, and all other components necessary to accurately predict the
capacity of 2-, 3-, or 4-series cells.
Contacts on the circuit module provide the following connections:
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Direct connection to the cells: 1N (BAT–), 1P, 2P, 3P, 4P (BAT+)
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To the serial communications port (SMBC, SMBD, VSS)
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The system load and charger connect across PACK+ and PACK–
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To the system present pin (SYS PRES)
2
bq20z40EVM-001 SBS 1.1 Impedance Track™Technology
SLUU320C – January 2009 – Revised June 2009
Enabled Battery Management Solution EVM