PMP9779

Output Short-Circuit Protection Reference Design for the TPS61088 Boost Converter

PMP9779

Design files

Overview

This reference design delivers an output short-circuit protection solution for the TPS61088 boost converter. This feature is realized by an over current protection (OCP) circuit. When the output is shorted to ground or the load current is higher than a certain value, the OCP circuit will disconnect the TPS61088 from the load. This solution only requires an additional low-cost comparator, a sense resistor, and a small sized N-MOSFET. With this small amount of additional circuitry, the TPS61088 is protected from being damaged in the output short circuit and over load conditions.

Features
  • 2.7V to 4.2V input voltage range
  • 5V/3A, 9V/2A and 12V/1.5A output capability
  • Output short circuit and over load protection
  • True disconnection between input and output during shut down
  • Ideal for power bank, blue-tooth speaker application, etc.
Output voltage options PMP9779.1
Vin (Min) (V) 3.6
Vin (Max) (V) 4.4
Vout (Nom) (V) 9
Iout (Max) (A) 2
Output Power (W) 18
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Integrated Switch

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.

TIDUBU0.PDF (938 K)

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

TIDRN65.PDF (255 K)

Detailed schematic diagram for design layout and components

TIDRN66.PDF (79 K)

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

TIDRN67.PDF (153 K)

Detailed overview of design layout for component placement

TIDRN69.ZIP (380 K)

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

TIDCCI9.ZIP (494 K)

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

TIDRN68.PDF (548 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS6108810-A Fully-Integrated Synchronous Boost Converter

Data sheet document-pdfAcrobat PDF open-in-new HTML
Comparators

TL331High Voltage Single Differential Comparator

Data sheet document-pdfAcrobat PDF
Linear & low-dropout (LDO) regulators

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
N-channel MOSFETs

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

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Test report Output Short-Circuit Protection for the TPS61088 Boost Converter Design Guide May 11, 2016
Technical article Make your power bank more reliable with output short-circuit protection Dec. 06, 2016

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