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

(ACTIVE) PMP9779

Description & Features

Technical Documents

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Key Document

Description

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.

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Schematic/Block Diagram

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP9779.1
(Output Voltage 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-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Integrated Switch

TI Devices (4)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD16323Q3  N-Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
LP5907  250mA Ultra-Low-Noise Low-Iq Low-Dropout (LDO) Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
TL331  Single Differential Comparator  Amplifiers  Sample & Buy Not Available
TPS61088  10-A Fully-Integrated Synchronous Boost Converter  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD16323Q3 VSON-CLIP (DQG)| 8 Download Download
LP5907 Download Download
Download -
Download Download
TL331 Download Download
TPS61088 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 859 11 May 2016 20
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 494 11 Aug 2016 6
ZIP 380 11 Aug 2016 0
PDF 548 11 Aug 2016 2
PDF 153 11 Aug 2016 0
PDF 79 11 Aug 2016 1 1
PDF 255 11 Aug 2016 8

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