Texas Instruments LM5117 Evaluation Board LM5117EVAL/NOPB LM5117EVAL/NOPB Datenbogen
Produktcode
LM5117EVAL/NOPB
Powering and Loading Consideration
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.
programmed by C20 restart capacitor.
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
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
Copyright © 2011–2013, Texas Instruments Incorporated