Performance Curves
Non-Isolated
SIP Converter
100
95
90
3.0 - 3.6Vin 15A
94
93
92
Efficiency (%)
Efficiency (%)
85
80
75
70
65
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
91
90
89
88
87
86
0
100
200
300
400
500
25 C
40 C
55 C
2.5 Vo
1.8 Vo
1.5 Vo
1.2 Vo
0.9 Vo
Load Current (A)
Air Flow (LFM)
Figure 1:
Efficiency at nominal output voltage vs. load current for all
modules at 25
°
C and nominal input voltage.
Figure 2:
Efficiency at 1.5Vout and 60% rated power vs. airflow rate
for ambient air temperatures of 25
°
C, 40
°
C, and 55
°
C (nominal input
voltage).
2.5
2.0
1.5
1.0
0.5
0.0
25 C
40 C
55 C
2.75
2.50
Power Dissipation (W)
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
2.5 Vo
1.8 Vo
1.5 Vo
1.2 Vo
0.9 Vo
Power Dissipation (W)
2.25
0
100
200
300
400
500
Load Current (A)
Air Flow (LFM)
Figure 3:
Power dissipation at nominal output voltage vs. load current
for all modules at 25
°
C and nominal input voltage.
Figure 4:
Power dissipation at 1.5Vout and 60% rated power vs. air-
flow rate for ambient air temperatures of 25
°
C, 40
°
C, and 55
°
C (nomi-
nal input voltage).
16
14
12
10
I
out
(A)
8
6
4
2
0
0
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
25
40
55
o
70
85
Semiconductor junction temperature is
within 1°C of surface temperature
Ambient Air Temperature ( C)
Figure 5:
Maximum output power derating curves vs. ambient air tem-
perature for
0.9Vout
unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Figure 6:
Thermal plot of
0.9V
converter at 15 amp load current with
55
°
C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 7
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