Battery tester reference design for multi-phase high-precision 0.5 to 100 A battery formation


Design files


This reference design provides a multi-phase solution for a wide range of current battery test applications. Leveraging the dual phase buck/boost controller LM5170's daisy chain configuration gives the design the ability to achieve 100A charging/discharging rates. Utilizing high accuracy constant current (CC) and constant voltage (CV) calibration loops, TIDA-01041 can achieve up to 0.01% voltage control accuracy. 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.

  • High precision calibration control achieving 0.02% full scale current control accuracy and 0.01% full scale voltage control accuracy
  • Supports from 0.5-A to 100-A charge and discharge
  • Input voltage (bus) from 8 V - 16 V and output load (battery) from 0 V - 4.2 V (5 V max)
  • Two LM5170 multiphase bidirectional buck, boost integrated controllers and drivers for charging and discharging
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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.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRZA8.ZIP (24839 K)

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

TIDCFD1.ZIP (1347 K)

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

TIDRZA7.PDF (7425 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog switches & muxes

SN74LV4053A-Q1Automotive 5-V, 2:1 (SPDT), 3-channel analog multiplexer

Data sheet: PDF
Arm Cortex-M4 MCUs

TM4C1294NCPDT32-bit Arm Cortex-M4F based MCU with 120-MHZ, 1-MB flash, 256-KB RAM, USB, ENET MAC+PHY

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

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

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

LM5170-Q1Multiphase bidirectional current controller, AEC-Q100 qualified

Data sheet: PDF | HTML
Charge pumps (inductorless)

LM26641.8-V to 5.5-VIN switched capacitor voltage inverter

Data sheet: PDF | HTML
ESD protection diodes

TPD4S012Quad 0.8-pF, 5.5-V, ±10-kV ESD protection diode with 15-V tolerant Vbus for USB Interface<

Data sheet: PDF | HTML
Fully differential amplifiers

THS4561Low-power, 60-MHz, wide-supply-range fully differential amplifier

Data sheet: PDF | HTML
General-purpose op amps

LM6142Dual, 24-V, 17-MHz, low-power operational amplifier

Data sheet: PDF
Inverting buffers & drivers

SN74LVC1G04-Q1Automotive single 1.65-V to 5.5-V inverter

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

TPS709150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable

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

TPS717150-mA, high-PSRR, low-IQ, low-dropout voltage regulator with enable

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

TPS7371-A, ultra-low-dropout voltage regulator with reverse current protection & enable

Data sheet: PDF | HTML
Precision ADCs

ADS131A0424-bit 128-kSPS 4-channel simultaneous-sampling delta-sigma ADC

Data sheet: PDF | HTML
Precision DACs (≤10 MSPS)

DAC80004Ultra-Small, true 16-bit quad voltage output DAC with 1LSB INL/DNL

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA827Low-noise, high-precision, JFET-input operational amplifier

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

TLV07Precision, 36-V, low noise, rail-to-rail output, operational amplifier

Data sheet: PDF | HTML
Series voltage references

REF50252.5-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet: PDF | HTML
Series voltage references

REF50505-V, 3-µVpp/V noise, 3-ppm/°C drift precision series voltage reference

Data sheet: PDF | HTML
Voltage translating gates

SN74LV1T00Single power supply 2-input POSITIVE NAND gate logic level shifter

Data sheet: PDF | HTML
Voltage translating gates

SN74LV1T32Single Power Supply 2-INPUT POSITIVE OR GATE with Logic Level Shifter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Battery Tester Reference Design for Multiphase High-Precision 0.5- to 100-A Batt (Rev. A) Jul. 18, 2019
Technical article Taking a modular approach to high-precision, high-current battery test equipment Jun. 21, 2019
Technical article Achieving highly accurate full-scale charge and discharge current control for high-cell Li-ion battery-formation testing Aug. 13, 2018

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