Mobile Point of Sale (mPOS) Power Reference Design


Design files


The TIDA-00818 is mobile point of sale (mPOS) reference design features a 1S1P Li-Ion battery architecture to reduce system size and cost. Integrated load switches are used to reduce standby power consumption and maximize battery life to enable the single-cell architecture. A USB Type-C charging port is also featured to support higher power delivery and minimize charging time.

  • 1S1P low-voltage battery architecture made possible by inclusion of low-voltage (5-V) printer rail driven by DRV8833
  • USB Type-C charging port via TUSB320 and BQ25890 updates current USB implementations to new standard
  • TPS22918 load switch disconnects inactive subsystems to extend battery life in a small SOT-23 package (~500-nA leakage)
  • TCA8414 integrates keypad scanner and GPIO expander into a single package, simplifying design and reducing BOM count
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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.

TIDUBZ9.PDF (1368 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement

TIDRMM3.ZIP (1733 K)

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


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

TIDRMM2.PDF (2091 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Load switches

TPS229185.5-V, 2-A, 52-mΩ load switch with adj. rise time and adj. output discharge

Data sheet: PDF | HTML
Load switches

TPS229655.7-V, 6-A, 16-mΩ load switch with adj. rise time and optional output discharge

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS612305-A, adjustable output voltage high efficiency synchronous boost converter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

TPS63020High Efficiency Single Inductor Buck-Boost Converter with 4A Switch

Data sheet: PDF | HTML
Battery charger ICs

BQ25890I2C 1cell 5A buck battery charger Maxcharge™ tech for high input with D+/D-

Data sheet: PDF | HTML
Digital power monitors

INA21926-V 12-bit I2C output digital power monitor

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

TCA5013Smart card interface IC for 1 user card + 3 SAMs

Data sheet: PDF | HTML
I2C general-purpose I/Os (GPIOs)

TCA841818-bit 1.65- to 3.6-V 1MHz I2C/SMBus keypad scanner with interrupt, reset & 80 key support

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G255316 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer

Data sheet: PDF
USB hubs & controllers

TUSB320USB Type-C configuration channel logic and port control

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Mobile Point of Sale (mPOS) Power Design Guide Jun. 15, 2016

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