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Table Of Contents
AN-1878 LM5085 Evaluation Board
1 Introduction
2 Theory of Operation
3 Board Layout and Probing
4 Board Connection/Start-up
5 Load Current Derating
6 Operating at Low Voltage
7 Current Limit
7.1 Sense Resistor Method
7.2 Q1 RDS(ON) method
8 Output Ripple Control
8.1 Minimum Output Ripple
8.2 Reduced Ripple Level Configuration
8.3 Lowest Cost Configuration
9 Monitor The Inductor Current
10 Scope Probe Adapters
11 Circuit Performance
12 Typical Waveforms
13 PC Board Layout
Circuit Performance
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Figure 12.
Line Regulation
Figure 13.
Load Regulation
10
AN-1878 LM5085
Evaluation Board
SNVA357B
–
October 2008
–
Revised April 2013
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