TIDA-010240

Scalable multi-pack smart battery charger reference design

TIDA-010240

Overview

Lithium batteries with more than 100 watt-hours (Wh) are generally not permitted in carry-on luggage, and any exceptions to this rule lie at the discretion of airlines and require prior approval. This reference design is a smart high-efficiency charger design for dual smart battery packs of up to 100-Wh implemented as 1S–5S Lithium-ion (Li-ion) batteries in a parallel configuration.

Features

Provides a drop-in battery charging system for charging and communication with two smart Lithium-Ion batteries
Supports 1S–5S packs with charge currents of up to 16-A per battery
Onboard microcontroller (MCU) for charge control and upstream
Onboard MCU communicates with smart battery gauges to read charging information and monitor alerts

Industrial

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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.

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Design guide — TIDA-010240

PDF | HTML

TIDUEB2A.PDF (1096 K)

Reference design overview and verified performance test data

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Schematic — TIDA-010240

TIDMAL6.PDF (803 K)

Detailed schematic diagram for design layout and components

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Bill of materials (BOM) — TIDA-010240

TIDMAL7.PDF (138 K)

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

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Assembly drawing — TIDA-010240

TIDMAL8.PDF (626 K)

Detailed overview of design layout for component placement

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CAD/CAE symbol — TIDA-010240

TIDMAM0.ZIP (3580 K)

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

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Gerber file — TIDA-010240

TIDCG82.ZIP (2311 K)

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

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PCB layout — TIDA-010240

TIDMAL9.PDF (3114 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ25731 — I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support

Data sheet: PDF | HTML

I2C & I3C switches & multiplexers

PCA9546A — 4-channel 2.3- to 5.5-V I2C/SMBus switch with reset & voltage translation

Data sheet: PDF | HTML

Ideal diode/ORing controllers

LM74700-Q1 — 3.2-V to 65-V, 80-uA IQ automotive ideal diode controller

Data sheet: PDF | HTML

Ideal diode/ORing controllers

LM7480-Q1 — 3-V to 65-V, automotive ideal diode controller driving back to back NFETs

Data sheet: PDF | HTML

MSP430 microcontrollers

MSP430FR2475 — 16 MHz MCU with 32 KB FRAM, 6 KB SRAM, comparator, 12-bit ADC, UART/SPI/I2C, timer

Data sheet: PDF | HTML

Start development

Software

Firmware

TIDA-010240-MSP430FR3475-FW — TIDA-010240 multi battery charger reference design firmware for MSP430FR2475

With this downloadable firmware, the onboard MSP430 on the TIDA-010240 reference design allows for a standalone smart multi battery charger with no interaction from a host controller.

Download options

TIDA-010240-MSP430FR3475-FW — TIDA-010240 multi battery charger reference design firmware for MSP430FR2475

Latest version

Version: 1.0

Release date: 20 Dec 2022

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DBC_Combined_V1_0.zip — 105 K

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Documentation

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SRAS_Manifest_EAR99_Dual_Battery_Charger.txt

Release Infomation

Version 1.0 firmware release for Scalable Multi-Pack Smart Battery Charger

Features:

-Provides a drop-in battery charging system for charging and communication with two smart Lithium-Ion batteries

-Supports 1S–5S packs with charge currents of up to 16-A per battery

-Onboard microcontroller (MCU) for charge control and upstream

-Onboard MCU communicates with smart battery gauges to read charging information and monitor alerts

Technical documentation

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	Type	Title		Date
	Design guide	Scalable Multi-Pack Smart Battery Charger Reference Design (Rev. A)	PDF \| HTML	Jul. 28, 2022

Related design resources

Hardware development

EVALUATION BOARD

BQ25731EVM — I2C NVDC 1 to 5 cell, 16-A, buck-boost charger controller evaluation module

LM74700EVM — LM74700 evaluation module

LM74800EVM-CD — LM74800-Q1 ideal diode controller evaluation module

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