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TIDA-010978

Design files

TIDA-010978

Design files

Overview

This reference design is a full cell temperature sensing and high cell-voltage accuracy Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery pack (52s and 104s). The design monitors each cell voltage, cell temperature, impedance, while supporting integrated electrochemical impedance spectroscopy (EIS) and robust daisy-chain communication. This design supports up to 1500V stackable energy storage systems. These features make this reference design applicable for high-capacity battery pack applications.

Features
  • Integrated EIS for real-time monitoring
  • Impedance Accuracy: 1% (with 5A excitation and 100uΩ impedance, Measurement frequency: 0.04Hz to 2kHz)
  • ±1.7mV cell voltage accuracy at -40°C to 85°C
  • Robust daisy-chain communication with data reclocking and ring architecture for 1500V stackable systems
  • Full cell-temperature sensing with multiplexer (MUX) for up to 52 or 104 cells per pack
  • Programmable cell/pack protection (OVP, UVP, OTP) with low-power shutdown mode (<10µA)
  • Scalable modular architecture supporting multipack expansion via daisy chain and CAN interfaces
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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.

download Design guide — TIDA-010978
PDF | HTML
SLVT251.PDF (582 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-010978
SLVMF71.PDF (1231 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-010978
SLVMF73.PDF (249 KB)

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

download CAD/CAE symbol — TIDA-010978
SLVMF72.ZIP (8503 KB)

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

download Gerber file — TIDA-010978
SLVC968.ZIP (1335 KB)

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

download PCB layout — TIDA-010978
SLVMF70.PDF (6975 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-010978
SLVMF69.PDF (2025 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Analog & precision switches & muxes

TMUX1308 — 5V, 8:1, 1-channel, analog mux, injection current control, 1.8V logic

Data sheet: PDF | HTML
Battery monitors & balancers

BQ79826Z-Q1 — Automotive 26-S battery monitor and balancer with electrochemical impedance spectroscopy engine

Data sheet: PDF | HTML
Thermistors

TMP61 — 1%, 10-kΩ linear thermistor in 0402, 0603/0805 and through hole packages

Data sheet: PDF | HTML
Voltage translators

SN74LXC1T14 — Single-channel fixed direction inverting 1.1-V to 5.5-V voltage level translator

Data sheet: PDF | HTML

Start development

Software development

Firmware

F28P55-EIS-FW — Pack-level electrochemical impedance spectroscopy (EIS) excitation reference design

This reference design features a bidirectional isolated, multi-port dual active bridge (DAB) DC/DC converter designed for battery pack EIS excitation and active pack balancing.
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-010978 — Up to 1500V stackable battery management unit reference design with integrated EIS TIDA-010990 — Pack-level electrochemical impedance spectroscopy (EIS) excitation reference design

F28P55-EIS-FW — Pack-level electrochemical impedance spectroscopy (EIS) excitation reference design

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Latest version
Version: EIS-VERSION-01
Release date: Oct 30, 2026
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Release notes

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ess_eis_apb_0903_FE.zip  — 9078 K

Code for EIS solution

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Hardware development
Reference design
TIDA-010978 — Up to 1500V stackable battery management unit reference design with integrated EIS TIDA-010990 — Pack-level electrochemical impedance spectroscopy (EIS) excitation reference design

Release Information

This code is for EIS solution

What's new

  • This code is the first version for EIS solution
  • Including excitation source and BMU board

Technical documentation

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* Design guide Up to 1500V Stackable Battery Management Unit Reference Design with Integrated EIS PDF | HTML Jul 6, 2026

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