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TPS1663

SLVSET9A – SEPTEMBER 2018 – REVISED OCTOBER 2018

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8 Detailed Description

8.1 Overview

The TPS1663x is a family of high voltage industrial eFuses. It provides robust protection for all systems and

applications powered from 4.5 V to 60 V. For hot-pluggable boards, the device provides hot-swap power

management with in-rush current control and programmable output voltage slew rate features using the dVdT

pin. Load, source and device protections are provided with many programmable features including overcurrent,

overvoltage, undervoltage. The precision overcurrent limit (±10% at 6 A) helps to minimize over design of the

input power supply, while the fast response short circuit protection 300 ns (typical) immediately isolates the faulty

load from the input supply when a short circuit is detected. The TPS16632 device integrate adjustable output

power limiting (PLIM) functionality that simplifies the system design requiring compliance in accordance to

standards like IEC61010-1. The device provides precise monitoring of voltage bus for brown-out and overvoltage

conditions and asserts fault signal for the downstream system. The TPS1663x monitor functions threshold

accuracy of ±3% ensures tight supervision of the supply bus, eliminating the need for a separate supply voltage

supervisor chip.

Additional features of the TPS1663x include:

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Current monitor output (IMON) for health monitoring of the system

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A choice of latch off or automatic restart mode response during current limit, Power Limit and thermal fault

using MODE pin

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PGOOD indicator output

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Over temperature protection to safely shutdown in the event of an overcurrent event

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De-glitched fault reporting for supply brown-out and overvoltage faults

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Enable/Disable control from an MCU using SHDN pin