259481A Marking, TPS259481AYWPR datasheet(33/56 Pages) TI

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9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

The TPS25948x is a 3.5 V to 23 V, 8-A eFuse that is typically used for power rail protection applications.

It operates from 3.5 V to 23 V with adjustable overvoltage and undervoltage protection. It provides ability to

control inrush current and protection against reverse current conditions. It can be used in a variety of systems

such as adapter or charger input protection, USB PD protection in smartphone, tablet, PC, notebook, monitor,

dock, server and PC motherboard, add-on cards, enterprise storage – RAID/HBA/SAN/eSSD, power MUXing/

ORing. The design procedure explained in the subsequent sections can be used to select the supporting

component values based on the application requirement. Additionally, a spreadsheet design tool TPS25948x

Design Calculator is available in the web product folder.

9.2 Single Device, Self-Controlled

TPS259480x

OUT

EN/UVLO

ILM

dVdt

GND

IN = 3.5 to 23 V

OUT

OVLO

SPLYGD

FLT

ITIMER

TPS259482x

OUT

EN/UVLO

ILM

dVdt

GND

IN = 3.5 to 23 V

OUT

OVLO

SPLYGD

RCBCTRL

ITIMER

LOGIC

TPS259481x

OUT

EN/UVLO

ILM

dVdt

GND

IN = 3.5 to 23 V

OUT

OVLO

SPLYGD

RCBCTRL

ITIMER

LOGIC

Figure 9-1. Single Device, Self-Controlled

Other variations:

In a Host MCU controlled system, EN/UVLO or OVLO can also be driven from the host GPIO to control the

device.

ILM pin can be connected to the MCU ADC input for current monitoring purpose.

www.ti.com

TPS25948

SLVSGT9A – FEBRUARY 2023 – REVISED SEPTEMBER 2023

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