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INTRODUCTION

This reference board allows the user to evaluate the SIP32433A, SIP32433B, SIP32434A, and SIP32434B single-channel eFuse

load switches. It can also be used for AEC-Q100 qualified versions of these devices, which have part numbers starting with

SIPQ instead of SIP.

The SIP32433A, SIP32433B, SIP32434A, and SIP32434B integrate multiple control and protection features, which provide

increased controllability and reliability with simplified designs and minimal external components. They protect both power

sources and downstream circuitry connected to the switch from overloads, short circuits, voltage surges, and excessive inrush

currents.

The output current limit can be set by a single external resistor. VIN overvoltage protection and undervoltage lockout threshold

levels can be set with an external resistor network. VIN inrush current requirements can be set with a single external soft start

capacitor.

Upon switch-off due to latchable faults, the SIP32433A and SIP32434A will latch the power switch off and the PGD will remain

low. The switch can restart by resetting the EN or VIN. The SIP32433B and SIP32434B will auto retry if there is no OTP or OVP

fault. The retry delay time is 32 times the soft start time set by the CSS.

Overcurrent, overtemperature, and short circuits are latchable faults, while overvoltage, undervoltage, and reverse current flow

are non-latchable faults.

EVALUATION BOARD FEATURES

The SIP32433A, SIP32433B, SIP32434A, and SIP32434B eFuse evaluation board features include:

? 3 V to 23 V operation

? Programmable current limit range. 150 mA to 3.5 A for the SIP32533 and 300 mA to 6 A for the SIP32434

? Programmable soft start output voltage slew rate and auto retry time

? Input path current sense resistor for current probing

? Onboard MOSFET for output short test

? Programmable OVP threshold

? Reverse current blocking (SIP32433x only)

APPLICATIONS

The evaluation board can be used for:

? Servers and data storage

? Routers and switches

? Hot swap and hot plug devices

? Optical modules

? PCIe and memory

? Industrial controls and automation

? TVs and gaming systems

DESCRIPTION

This evaluation fits the evaluation of the eFuse products listed in Table 1.