Digital control reference design for cost-optimized battery test systems


Design files


This reference design provides a cost-effective solution for battery formation and test applications. This design uses the C2000™ real-time control MCU for high-resolution pulse-width modulation (PWM) generation, and constant-current (CC) and constant-voltage (CV)
control loops. It efficiently utilizes the MCU, and does not require a precision digital-to-analog converter, which saves more than 30% in the bill of materials. The flexibility of current and voltage loops in software allows users to achieve multiple current and voltage levels output with one design.

  • Bidirectional current control up to 10 A with less than ±0.01% accuracy
  • C2000 on-chip 12-bit ADC achieves control accuracy better than ±0.05%
  • Parallel up to 8 channels for wide output current range
  • Flexible digital constant-current and constant-voltage control loops
  • Channel-to-channel crosstalk error below 0.01%
  • Multilevel protection in hardware and software for reliable power supply design

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.

TIDUEY0.PDF (2724 K)

Reference design overview and verified performance test data

TIDU986A.PDF (6606 K)

Reference design overview and verified performance test data

TIDM733.PDF (2894 K)

Detailed schematic diagram for design layout and components

TIDM734.PDF (266 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDM735.ZIP (2000 K)

Detailed overview of design layout for component placement

TIDM737.ZIP (7285 K)

Files used for 3D models or 2D drawings of IC components

TIDCFY1.ZIP (2055 K)

Design file that contains information on physical board layer of design PCB

TIDM736.ZIP (6288 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

C2000 real-time microcontrollers

TMS320F280049C2000™ 32-bit MCU with 100-MHz, FPU, TMU, 256-kb Flash, CLA, PGAs, SDFM

Data sheet: PDF | HTML
C2000 real-time microcontrollers

TMS320F280049-Q1Automotive C2000™ 32-bit MCU with 100 MHz, FPU, TMU, 256 KB flash, CLA, PGAs, SDFM

Data sheet: PDF | HTML
Buck-boost & inverting controllers (external switch)

LM51183-75V Wide Vin, Current Mode Non-Synchronous Buck-Boost Controller

Data sheet: PDF | HTML
Buck-boost, inverting & split-rail converters (integrated switch)

TPS63710Low Noise, 1A Synchronous Inverting Buck Converter in 3x3 WSON Package

Data sheet: PDF | HTML
General-purpose op amps

TLV171Single, 36-V, 3-MHz, low-power operational amplifier for cost-sensitive applications

Data sheet: PDF | HTML
Half-bridge drivers

LM5109B1-A, 100-V half bridge gate driver with 8-V UVLO and high noise immunity

Data sheet: PDF | HTML
Instrumentation amplifiers

INA821High bandwidth (4.7MHz), low noise (7nV/√Hz), precision (35μV), low-power, instrumentation amp

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP38693500-mA, 10-V, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS723200-mA, negative, adjustable low-dropout voltage regulator with enable

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS736400-mA, high-accuracy, ultra-low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML
Precision ADCs (<=10MSPS)

ADS131M0824-bit, 32-kSPS, 8-channel, simultaneous-sampling, delta-sigma ADC

Data sheet: PDF | HTML
Series voltage references

REF20258-ppm/°C drift, low-power, dual-output Vref & Vref/2 voltage reference

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
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Type Title Date
* Design guide Digital Control Reference Design for Cost-Optimized Battery Test Systems PDF | HTML Nov. 03, 2020
Technical article How to design one battery tester for a wide range of sizes, voltages and form factors Nov. 04, 2020
Design guide C2000™ Digital Power Buck Converter BoosterPack™ Design Guide (Rev. A) May 28, 2020

Related design resources

Hardware development

TMDSCNCD280049C F280049C controlCARD Evaluation Module

Software development

C2000WARE-DIGITALPOWER-SDK DigitalPower software development kit (SDK) for C2000™ MCUs

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

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