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Accurate Output Current Limit Circuit Reference Design for the TPS61088 Boost Converter
PMP9806
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Key Document

Description

This reference design delivers an accurate output current limit solution for the TPS61088 boost converter. This feature is realized by an output current sense resistor and a low cost operational amplifier. When the output current is higher than the current limit point, the output of the operational amplifier will be higher than the TPS61088’s 1.204V reference voltage. So the output voltage drops. If the output current continuously increases, the output voltage will be further decreased. Thus the maximum output power will always be limited below a certain level.

Features
  • 2.7V to 4.2V input voltage range
  • 5V/3A, 9V/2A and 12V/1.5A output capability
  • Accurate output current limit point
  • Low cost and small solution size
  • Ideal for power bank and other maximum output power limited Boost Converter applications

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Schematic/Block Diagram

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Design Files

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Parametrics
 PMP9806
(Output Voltage 1)
Vin (Min) (V)3
Vin (Max) (V)4.2
Vout (Nom) (V)9
Iout (Max) (A)2
Output Power (W)18
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBoost- Synchronous
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Part Number Status Vin  (Min)  (V)   Vin  (Max)  (V)   Vout  (Nom)  (V)   Iout  (Max)  (A)   Output Power  (W)   Isolated/Non-Isolated   Input Type   Topology  

PMP9806:
Accurate Output Current Limit Circuit Reference Design for the TPS61088 Boost Converter

 ACTIVE 3   4.2   9   2   18   Non-Isolated   DC   Boost- Synchronous  

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS61088  10-A Fully-Integrated Synchronous Boost Converter  Step-up (boost) regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS61088 Download Download

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Technical documentation

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User guides (1)
Title Type Size (KB) Date
PDF 1098 14 Apr 2017
Design files (6)
Title Type Size (KB) Date
ZIP 489 12 May 2017
ZIP 349 12 May 2017
PDF 312 12 May 2017
PDF 90 12 May 2017
PDF 87 12 May 2017
PDF 137 12 May 2017

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