Reference Design Realizing Output Current Sensing and Limit, Plug-in Detection in Power Bank


Design files


A power bank is a portable device that can supply USB power using stored energy in its built-in batteries. This reference design demonstrates a circuit based on the TPS61236 for the USB output port of the power-bank. The reference design features a 5V and 2.4A output capability, auto detection of a portable device plug-in, output current sensing and limiting, short circuit protection, temperature protection, and battery voltage indication.

  • 5V and 2.4A output capability in 95.5% efficiency
  • Auto detection for a portable device plug-in
  • USB cable voltage drop compensation
  • Battery voltage indication with four LEDs
  • Short circuit protection, temperature limit and protection
Output voltage options PMP9776.1
Vin (Min) (V) 3
Vin (Max) (V) 4.4
Vout (Nom) (V) 5
Iout (Max) (A) 2.4
Output Power (W) 12
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous
Personal electronics
?? View video with transcript Video

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.

TIDUB86.PDF (1341 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRJ64.PDF (93 K)

Detailed schematic diagram for design layout and components

TIDRJ65.PDF (64 K)

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

TIDRJ67.ZIP (551 K)

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


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

TIDRJ66.PDF (427 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61236P8-A valley current, adjustable output voltage synchronous boost converters

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

TPS782150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +125°C

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G233216 MHz MCU with 4KB Flash, 256B SRAM, 10-bit ADC, SPI/I2C, timer

Data sheet: PDF
USB power switches & charging port controllers

TPS2514USB dedicated charging port controller - Gen 1

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report Output Current Sensing and Limit, Plug-in Detection in Power Bank Design Guide Dec. 07, 2015

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​