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參數(shù)資料
| 型號： | QME48T40050-PGBLG |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-8 |
| 文件頁數(shù)： | 13/13頁 |
| 文件大?。?/td> | 247K |
| 代理商： | QME48T40050-PGBLG |
ZD-00371 Rev 2, 22-May-09
Page 9 of 13
www.power-one.com
QME48T40050 DC-DC Converter Data Sheet
36-75 VDC Input; 5.0 VDC @ 40 A Output
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Lo
ad
C
u
rr
ent
[A
d
c]
0
10
20
30
40
50
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
NC - 30 LFM (0.15 m/s)
Fig. 1 : Available load current vs. ambient air temperature
and airflow rates for converter with G height pins mounted
vertically with air flowing from pin 1 to pin 3, MOSFET
temperature
120 C, Vin = 48 V.
Note: NC – Natural convection
Load Current [Adc]
0
8
16
24
32
40
48
E
ffici
ency
0.75
0.80
0.85
0.90
0.95
1.00
72 V
48 V
36 V
Fig. 3:
Efficiency vs. load current and input voltage for
converter mounted vertically with air flowing from pin 1 to pin
3 at a rate of 300 LFM (1.5 m/s) and Ta = 25
C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Lo
ad
C
u
rr
ent
[A
d
c]
0
10
20
30
40
50
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
NC - 30 LFM (0.15 m/s)
Fig. 2 : Available load current vs. ambient air temperature and
airflow rates for converter with G height pins mounted
horizontally with air flowing from pin 1 to pin 3, MOSFET
temperature
120 C, Vin = 48 V.
Load Current [Adc]
0
8
16
24
32
40
48
Effi
cien
cy
0.75
0.80
0.85
0.90
0.95
1.00
70 C
55 C
40 C
Fig. 4: Efficiency vs. load current and ambient temperature
for converter mounted vertically withVin = 48 V and air
flowing from pin 1 to pin 3 at a rate of 200 LFM (1.0 m/s).
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