0.0
0.5
1.0
1.5
2.0
2.5
0
20
40
60
80
100
EF
F
IC
IEN
C
Y
(%
)
I
OUT
(A)
V
IN
= 24V
V
IN
= 48V
V
IN
= 75V
V
IN
= 7V
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Performance Characteristics
4
Performance Characteristics
4.1
Efficiency Plots
Figure 2
shows the conversion efficiency versus output current for several input voltage conditions.
Figure 2. Conversion Efficiency Versus Output Current
4.2
Turn-On Waveform
When applying power to the LM5005 evaluation board a certain soft-start sequence occurs.
Figure 3
shows the output voltage during a typical start-up sequence.
Conditions: Input Voltage = 36VDC, Output Current = 2A
Trace 1: Output Voltage Volts/div = 2V
Horizontal Resolution = 500 µsec/div
Figure 3. Output Voltage During a Typical Start-Up Sequence
3
SNVA298A – November 2007 – Revised April 2013
AN-1748 LM5005 Evaluation Board
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