Portable Audio Amplifier with Auto Audio Control 1S1P BMS Reference Design


Design files


High performance, 10Watt (5W per speaker) portable audio amplifier that includes everything you need to implement a BMS (Battery Management Solution) for a portable audio amplifier (including a Charger, Fuel (Gas) Gauge and Protection for a 1S1P 18650 2400mAh Lithium battery) for a Class D Audio Amplifier. Get extended operating time by using efficient power regulators, Class D amplifier and proper battery management.

  • High performance, 10Watt (5W per speaker) portable audio amplifier
  • Includes everything that is needed for a battery management solution for a portable audio amplifier (charger, fuel (gas) gauge and protection for a 151P 18650 lithium battery)
  • Class D audio amplifier 0.01% THD
  • Extended play time due to high efficiency and proper battery management techniques
  • Ultra-low power MSP430 microcontroller
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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.

TIDUCL1.PDF (13752 K)

Reference design overview and verified performance test data

TIDRP70.PDF (1310 K)

Detailed schematic diagram for design layout and components

TIDRP71.PDF (80 K)

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

TIDRP72.PDF (500 K)

Detailed overview of design layout for component placement

TIDRP74.ZIP (1721 K)

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

TIDCD09.ZIP (2834 K)

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

TIDRP73.PDF (2934 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery charger ICs

BQ25895I2C 1cell 5A buck battery charger with high input voltage and 3.1-A boost with HVDCP enabled

Data sheet: PDF | HTML
Battery fuel gauges

BQ27426Single cell System-side battery fuel (gas) gauge w/Pre-programmed chemistry Profile

Data sheet: PDF | HTML
Battery protectors

BQ2970Li-Ion/Li Polymer Advanced Single-Cell Battery Protector IC Family

Data sheet: PDF | HTML
Boost controllers (external switch)

LM34812.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback

Data sheet: PDF | HTML
I2C & I3C level shifters, buffers & hubs

PCA93062-bit bidirectional 400-kHz I2C/SMBus voltage level translator

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

TPS782-Q1Automotive 150-mA, nano-IQ, low-dropout voltage regulator with enable

Data sheet: PDF
MSP430 microcontrollers

MSP430FR573524 MHz MCU with 8KB FRAM, 1KB SRAM, 10-bit ADC, comparator, UART/SPI/I2C, timer

Data sheet: PDF | HTML
N-channel MOSFETs

CSD16323Q325-V, N channel NexFET™ power MOSFET, single SON 3 mm x 3 mm, 5.5 mOhm

Data sheet: PDF | HTML
N-channel MOSFETs

CSD17578Q5A30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 9.3 mOhm

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

DAC081C0858Bit Micro Pwr DAC w/ I2C-Compatible Interface & External Reference

Data sheet: PDF | HTML
Speaker amps

TPA3004D212-W stereo, 8.5- to 18-V supply, analog input Class-D audio amplifier w/ volume control

Data sheet: PDF

Technical documentation

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Type Title Date
* Design guide Portable Audio Amplifier With Auto Audio Control 1S1P BMS Reference Design Dec. 08, 2016

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