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Output Short-Circuit Protection Reference Design for TPS61088 Boost Converter

PMP9779

Overview

This reference design provides an output short-circuit protection solution for the TPS61088 boost converter. This function is implemented through the overcurrent 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 corresponding load. This solution only requires an additional low-cost comparator, a sensing resistor and a small N-MOSFET. By adding this small amount of circuitry, the TPS61088 is protected from output short circuit and overload conditions.

characteristic

● Input voltage range 2.7V to 4.2V
● 5V/3A, 9V/2A and 12V/1.5A output capabilities
●Output short circuit and overload protection
● True disconnection between input and output during shutdown
● Suitable for mobile power supply, Bluetooth speaker applications, etc.

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Blockdiagram

Design Files

Documentation

PMP9779 Design Guide

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Update:2025-05-12 10:57:24

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