TPS1663 datasheet(25/46 Pages) TI1

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10 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.

10.1 Application Information

The TPS1663x is a 60-V eFuse, typically used for hot-swap and power rail protection applications. The device

operates from 4.5 V to 60 V with programmable current limit, overvoltage, and undervoltage protections. The

device aids in controlling in-rush current and provides output power limiting for systems such as PLCs, Telecom

radios, and industrial printers. The device also provides robust protection for multiple faults on the system rail.

The Detailed Design Procedure section can be used to select component values for the device. Additionally, a

spreadsheet design tool, TPS1663 Design Calculator, is available in the web product folder.

10.2 Typical Application

TPS16630

31PŸ

OUT

dVdT

ILIM

P_IN

RILIM

18 k

FLT

GND

SHDN

UVLO

OVP

MODE

IMON

RIMON

30 k

PGOOD

VIN: 20 V ± 50 V

ON/OFF Control

43 k

20.5 k

887 k

COUT

22 nF

100 µF

VOUT

Figure 10-1. 20 V –50 V, 1-A eFuse Protection Circuit for Telecom Radios

10.2.1 Design Requirements

Table 10-1 shows the design requirements for TPS16630.

Table 10-1. Design Requirements

DESIGN PARAMETER

EXAMPLE VALUE

V(IN)

Input voltage range

20 V–50 V

V(UV)

Undervoltage lockout set point

18 V

V(OV)

Overvoltage cutoff set point

55 V

I(LIM)

Overload current limit

1 A

COUT

Output capacitor

100 µF

I(INRUSH)

Inrush current limit

300 mA

10.2.2 Detailed Design Procedure

10.2.2.1 Programming the Current-Limit Threshold R(ILIM) Selection

The R(ILIM) resistor at the ILIM pin sets the overload current limit. The overload current limit can be set using

Equation 7.

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TPS1663

SLVSET9F – SEPTEMBER 2018 – REVISED FEBRUARY 2023

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