TIDA-01040
Battery Tester Reference Design for High Current Applications
TIDA-01040
Overview
Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range. This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) voltages from 8 V–16 V and output load (battery) voltages from 0V–5V. The design utilizes an integrated multi-phase bidirectional controller, LM5170, combined with a high precisiondata converters and instrumentation amplifiers to achieve charge and discharge accuracies of 0.01% full scale. To maximize battery capacity and minimize battery formation time, the design uses highly-accurate constant current (CC) and constant voltage (CV) calibration loops with a simplified interface. All key design theories are described guiding users through the part selection process and optimization. Finally, schematic, board layout, hardware testing, and results are also presented.
Features
- Battery test subsystem with calibration control achieving 0.01% full scale current control accuracy
- Supports up to 50-A applications with an input voltage (bus) from 8 V–16 V and output load (battery) from 0 V–4.5 V (5 V max)
- LM5170 bidirectional buck, boost controller
- Programmable high-precision reference supplied by DAC80004
- Voltage and current monitoring provided by the ADS131A04 24 bit delta-sigma
- User friendly control interface
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUE89B.PDF (3976 K)
Reference design overview and verified performance test data
TIDRWJ9.PDF (1255 K)
Detailed schematic diagram for design layout and components
TIDRWK0.PDF (215 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRWK1.PDF (431 K)
Detailed overview of design layout for component placement
TIDRWK3.ZIP (4178 K)
Files used for 3D models or 2D drawings of IC components
TIDCER0.ZIP (1352 K)
Design file that contains information on physical board layer of design PCB
TIDRWK2.PDF (5830 K)
PCB layer plot file used for generating PCB design layout
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Battery Tester Reference Design for High Current Applications (Rev. B) | Jul. 18, 2019 | |
| Technical article | Taking a modular approach to high-precision, high-current battery test equipment | PDF | HTML | Jun. 21, 2019 | |
| Technical article | Achieving highly accurate full-scale charge and discharge current control for high | PDF | HTML | Aug. 13, 2018 |
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