Datasheet

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3.5.3 Overload Protection
The evaluation board is configured with hiccup mode overload protection. The restart time can be
programmed by C20 restart capacitor. Figure 4 shows hiccup mode operation in the event of an output
short.
Conditions:
Input Voltage = 48VDC
Output Short
Traces:
Top Trace: SW Voltage Volt/div = 20V
Bottom Trace: Inductor Current, Amp/div = 5A
Horizontal Resolution = 20ms/div
Figure 4. Short Circuit
5
SNVA466B–May 2011–Revised April 2013 AN-2103 LM25117 Evaluation Board
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