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參數(shù)資料
| 型號(hào)： | LW020B3 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 20 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁(yè)數(shù)： | 15/16頁(yè) |
| 文件大小： | 341K |
| 代理商： | LW020B3 |
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8
Lucent Technologies Inc.
Data Sheet
January 2000
36 Vdc to 75 Vdc Inputs; 20 W
LW020 Single-Output-Series Power Modules:
Characteristics Curves (continued)
8-1261(C).b
Figure 9. LW020A, B, C, F, and G Typical Output
Voltage for a Step Load Change from 50%
to 25%
8-1263(C).b
Figure 10. LW020A, B, C, F, and G Typical Output
Voltage Start-Up when Signal Applied to
Remote On/Off
Test Congurations
8-203(C)
Note: Input reected-ripple current is measured with a simulated
source impedance of 12
H. Capacitor Cs offsets possible
battery impedance. Current is measured at the input of the
module.
Figure 11. Input Reected-Ripple Test Setup
8-513(C)
Note: Use a 0.1
F ceramic capacitor. Scope measurement should
be made using a BNC socket. Position the load between
50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
8-204(C)
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
Figure 13. Output Voltage and Efciency
Measurement Test Setup
TIME, t (100 s/div)
NORMALIZED
OUTPUT
VOLTAGE,
V
O
(V)
NORMALIZED
OUTPUT
CURRENT,
I
O
(A)
101%
VO, nom
100%
VO, nom
50%
IO, max
25%
IO, max
TIME, t (1 ms/div)
NORMALIZED
OUTPUT
VOLTAGE,
V
O
(1
V/div)
0
100%
VO, nom
50%
VO, nom
5V
0
REMOTE
ON/OFF,
V
on/off
(V)
(2
V/div)
TO OSCILLOSCOPE
12 H
CS 220 F
IMPEDANCE < 0.1
@ 20
°C, 100 kHz
VI(+)
VI(–)
BATTERY
33 F
CURRENT
PROBE
LTEST
VO(+)
VO(–)
RESISTIVE
LOAD
SCOPE
0.1 F
COPPER STRIP
VI(+)
VI(–)
VO(+)
VO(–)
II
IO
SUPPLY
CONTACT RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
η
VO(+)
VO(–)
–
[]IO
VI(+)
VI(–)
–
[]II
------------------------------------------------
100
×
=
%
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