16S-17S Battery pack reference design with low current consumption
TIDA-010074
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Key Document

Description

This reference design is a low standby and low ship mode current consumption 16S-17S LiFePO4 Li-ion battery pack design for telecom battery backup and emotorcycles. It was implemented for a 2-layer PCB. The 9S-15S AFE bq76940 monitors the lower 15 cells voltage and a two-channel general purpose amplifier LM2904B monitors the 16th and 17th battery cells voltage. The design protects the battery pack against overvoltage, undervoltage, overcurrent, and overtemperature, and it reduces energy consumption when in standby and shipping mode through a welldesigned auxiliary power supply strategy and a highly efficient, low quiescent current DC/DC converter LM5164, therefore allows longer shipping time and idle time.

Features
  • Cost competitive 16S-17S LiFePO4 /Li-ion battery pack solution
  • ±5-mV cell voltage sensing accuracy for 16/17S battery cell @ room temperature
  • 100-µA current consumption when in standby mode
  • 5-µA current consumption when in shipping mode
  • Robust and programmable protection, including cell overvoltage and undervoltage, overcurrent discharge, short circuit, overtemperature and undertemperature

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Schematic/Block Diagram

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Design Files

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TI Devices (10)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
BQ76200  High-side n-channel FET driver  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
BQ76940  9 to 15-series cell li-ion and li-phosphate battery monitor (bq76940 family)  Battery management ICs  Sample & Buy View Design Kits & Evaluation Modules
CSD19536KTT  100V, N ch NexFET MOSFETâ„¢, single D2PAK, 2.4mOhm  MOSFETs  Sample & Buy Not Available
LM2904B  1.2 MHz industry standard dual-channel amplifier with -40C to 125C operation  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
LM5164  6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ  Step-down (buck) regulators  Sample & Buy View Design Kits & Evaluation Modules
MSP430FR2155  24 MHz MCU with 32KB FRAM, 4KB SRAM, Comparator, 12-bit ADC, UART/SPI/I2C, Timer  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
SN6501  Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
THVD1500  5-V RS-485 transceiver up to 500 kbps with ±8-kV IEC ESD protection  Interface  Sample & Buy View Design Kits & Evaluation Modules
TLV704  150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPD2E007  2-channel ESD protection array for AC signal data interface  Circuit protection ICs  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
BQ76200 Download Download
BQ76940 Download Download
CSD19536KTT Download -
LM2904B Download
LM5164 Download Download
MSP430FR2155 Download Download
Download
Download
Download
SN6501 Download Download
THVD1500 Download
TLV704 Download Download
TPD2E007 Download Download
Download -
Download -

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 2472 28 Jun 2019
Design files (6)
Title Type Size (KB) Date
ZIP 870 12 Jul 2019
ZIP 1807 12 Jul 2019
PDF 1879 12 Jul 2019
PDF 505 12 Jul 2019
PDF 108 12 Jul 2019
PDF 800 12 Jul 2019
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design  TIDA-010030  Reference design 

Software development (1)

Name Part Number Software Type
Code Composer Studio™ Integrated Development Environment for MSP Microcontrollers  CCSTUDIO-MSP  IDEs, configuration, compilers & debuggers 


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