NQ03009VMA15NRS Datasheet, PDF (7/17 Pages) SynQor Worldwide Headquarters – 15A Non-Isolated DC/DC Converter in SIP configuration

Performance Curves
Non-Isolated
SIP Converter
3.0 - 3.6Vin 15A
100
95
90
85
80
2.5 Vo
75
1.8 Vo
1.5 Vo
70
1.2 Vo
0.9 Vo
65
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for all
modules at 25°C and nominal input voltage.
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
2.5 Vo
0.75
1.8 Vo
0.50
1.5 Vo
1.2 Vo
0.25
0.9 Vo
0.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current
for all modules at 25°C and nominal input voltage.
16
14
12
10
8
6
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
2
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
0
0
25
40
55
70
85
Ambient Air Temperature (^oC)
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 [phone]
94
93
92
91
90
89
88
25 C
40 C
87
55 C
86
0
100
200
300
400
500
Air Flow (LFM)
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
0
25 C
40 C
55 C
100
200
300
400
500
Air Flow (LFM)
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).
Semiconductor junction temperature is
within 1°C of surface temperature
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