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| 型號： | HW125F |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 373K |
| 代理商： | HW125F |
Lucent Technologies Inc.
5
HW125F Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 83.5 W
Data Sheet
August 2000
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
configurations.
8-3003(C)
Figure 1. Typical HW125F1 Input Characteristics at
Room Temperature
8-3004(C)
Figure 2. Typical HW125F1 Converter Efficiency
vs. Output Current at Room Temperature
8-3050(C)
Note: See Figure 10 for test conditions.
Figure 3. Typical HW125F1 Output Ripple Voltage
at Room Temperature and I
O
= I
O, max
8-3047(C)
Note: Tested with a 10
μ
F tantalum and a 1.0
μ
F ceramic capacitor
across the load.
Figure 4. Typical HW125F1 Transient Response to
Step Decrease in Load from 50% to 25%
of Full Load at Room Temperature and
36 Vdc to 75 Vdc Input (Waveform
Averaged to Eliminate Ripple
Component.)
2.5
0.5
55
50
70 75
0
5
10 15 20 25
60 65
0.0
2.0
INPUT VOLTAGE, V
I
(V)
1.5
3.0
I
I
1.0
I
O
= 1.24 A
I
O
= 12.5 A
I
O
= 25 A
30 35 40 45
89
85
17
15
23
25
3
5
7
9
11
13
19
21
80
88
OUTPUT CURRENT, I
O
(A)
87
84
83
90
82
E
81
86
V
I
= 36 V
V
I
= 54 V
V
I
= 75 V
TIME, t (2 s/div)
O
O
(
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
TIME, t (500 μs/div)
O
O
(
O
O
(
6.25 A
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