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TIDA-010253

Battery control unit reference design for energy storage systems

TIDA-010253

Design files

Overview

This reference design is a central controller for a high-voltage Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery rack. This design provides driving circuits for high-voltage relay, communication interfaces, (including RS-485, controller area network (CAN), daisy chain, and Ethernet), an expandable interface to humidity sensor, high-voltage analog-to-digital converter (ADC), and current sensor.

This design uses a high-performance microcontroller to develop and test applications. These features make this reference design applicable for a central controller of high-capacity battery rack applications.

Features
  • Interface complies with Sitara MCU controlCARD                                            
  • Full communication interface including isolated CAN, RS-485, and Ethernet                                            
  • Robust drive channels for relay coils                                            
  • Robust daisy-chain communication channels                                            
  • Comprehensive interface with humidity sensor, real-time clock, watchdog, and high voltage ADC                                            
     
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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.

PDF | HTML
TIDUF55.PDF (1036 K)

Reference design overview and verified performance test data

TIDMC33.PDF (1862 K)

Detailed schematic diagram for design layout and components

TIDMC34.PDF (226 K)

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

TIDMC35.PDF (920 K)

Detailed overview of design layout for component placement

TIDMC37.ZIP (7992 K)

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

TIDCGI9.ZIP (1423 K)

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

TIDMC36.PDF (4780 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

LMR5145036-V, 5-A synchronous buck converter

Data sheet: PDF | HTML
AND gates

SN74HCS212-ch, 4-input 2-V to 6-V high-speed (12 ns) AND gate with Schmitt-trigger inputs

Data sheet: PDF | HTML
Battery monitors & balancers

BQ79600-Q1Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup

Data sheet: PDF
ESD protection diodes

ESD762Dual 1.7-pF ±24-V ±20-kV ESD protection diode with 8/20-µS surge

Data sheet: PDF | HTML
ESD protection diodes

TPD4E001-Q1Automotive Quad 1.5-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for USB 2.0

Data sheet: PDF | HTML
High-side switches

TPS4H160-Q140-V, 160-mΩ, 4-ch automotive smart high-side switch with adjustable current limit

Data sheet: PDF | HTML
Humidity sensors

HDC30200.5% RH digital humidity sensor, 0.19% long-term drift, 400 nA, 4-sec response time, NIST traceable

Data sheet: PDF | HTML
Ideal diode/ORing controllers

LM74701-Q1Automotive 3.2-V to 65-V reverse battery protection ideal diode controller with integrated VDS clamp

Data sheet: PDF | HTML
Isolated CAN transceivers

ISO1042Isolated CAN transceiver with 70-V bus fault protection & flexible data rate

Data sheet: PDF | HTML
Isolated RS-485 transceivers

ISO1410EMC protected, 500-Kbps, half-duplex, 5-kVrms isolated RS-485 & RS-422 transceiver

Data sheet: PDF | HTML
Isolated power modules (integrated transformer)

UCC12050500-mW, high-efficiency, 5-kVRMS isolated DC/DC converter

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

TPS763150-mA, 10-V, low-dropout voltage regulator with enable

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

TPS7A16100-mA, 60-V, ultra-low-IQ, low-dropout (LDO) voltage regulator with power good and enable

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

TPS7B81150-mA, off-battery (40-V), ultra-low-IQ, low-dropout (LDO) voltage regulator with enable

Data sheet: PDF | HTML
Noninverting buffers & drivers

SN74LVC2G17-Q1Automotive 2-ch, 1.65-V to 5.5-V buffers with Schmitt-Trigger inputs

Data sheet: PDF
Real-time clocks (RTCs) & timers

BQ32000Serial real-time clock (RTC) with battery backup and trickle charge

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3823Active-low, push-pull, voltage supervisor (reset IC) with 1.6-s watchdog & manual reset

Data sheet: PDF | HTML
Transformer drivers

SN6505BLow-noise, 1-A, 420-kHz transformer driver with soft start for isolated power supplies

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide Battery Control Unit Reference Design for Energy Storage Systems PDF | HTML Nov. 06, 2023

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