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User's Guide
SNVA464C–December 2010–Revised April 2013
AN-2100 LM25066 Evaluation Board
1 Introduction
The LM25066EVK evaluation kit provides the design engineer with a fully functional, intelligent monitoring
and hot-swap protection board designed for positive voltage systems. This application note describes the
various functions of the evaluation board, how to test and evaluate it, and how to use the companion GUI.
The GUI is used to collect telemetry, configure warning and fault thresholds, and assist the designer with
selection of the external components for a specific application. Use of the advanced telemetry and
monitoring capabilities of the LM25066 requires external control via the Power Management Bus (PMBus)
interface. However, the LM25066 is capable of acting as a hot-swap and protection circuit without any
PMBus intervention. Please check the LM25066 System Power Management & Protection IC with PMBus
(SNVS654) data sheet for the latest software and data sheet information.
2 PCB Features
• Input voltage range: 2.9V to 16V (limited by input clamp D1)
• Programmable current limit: set to 50A (±8%)
• Q1 power limit: 80W (typical)
• UVLO thresholds: 2.9V and 3.1V
• PGD thresholds: 10.8V and 10.25V
• Insertion delay: 147 ms (typical)
• Fault time-out period: 8.9 ms
• Restart time: 1.1 seconds
• PCB size: 3.5” x 4.2”
• Solution size: 0.7” x 0.7”
Panduit is a registered trademark of Panduit Corp.
All other trademarks are the property of their respective owners.
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SNVA464C–December 2010–Revised April 2013 AN-2100 LM25066 Evaluation Board
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