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參數(shù)資料
| 型號： | 12S3.2000NT |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 5/6頁 |
| 文件大?。?/td> | 142K |
| 代理商： | 12S3.2000NT |
A
10 Watt NT Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
5
3/2001
Temperature Derating
The NT Single series can operate up to 90°C case temperature
without derating. Case temperature may be roughly calculated
from ambient by knowing that the 10 Watt NT Singles case
temperature rise is approximately 15°C per package watt
dissipated.
For example: If a 24 Volt input converter was delivering
7 Watts at 24 Volts input, at what ambient could it expect to run
with no moving air and no extra heat sinking?
Efficiency for the NT Single is approximately 84%. Check the
product curves for exact information. This leads to an input
power of about 8.3 Watts. Therefore, the case dissipation is
8.3 Watts (input power) minus 7 Watts (output power) or 1.3
Watts. The case temperature rise would be 1.3 Watts x 15 =
20°C. This number is subtracted from the maximum case
temperature of 90°C to get 70°C.
This is a rough approximation of the maximum ambient
temperature. Because of the difficulty of defining ambient
temperature and the possibility that the load’s dissipation may
actually increase the local ambient temperature significantly
or that convection cooling is suppressed by physical placement
of the module, these calculations should be verified by actual
measurement of operating temperature and your circuit’s
exact efficiency (efficiency depends on both line input and
load value) before committing to a production design.
4
8
12
16
20
24
28
32
36
LINE INPUT (VOLTS)
0.0
0.2
0.4
0.6
0.8
INPUT
CURRENT
(AMPS)
24 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
100% LOAD
50% LOAD
0
1020
3040
50
6070
8090
100
LOAD (%)
60
65
70
75
80
85
90
EFFICIENCY
(%)
24 VOLT EFFICIENCY Vs. LOAD
LINE =
18VDC
LINE =
24VDC
LINE =
36VDC
18
20
22
24
26
28
30
32
34
36
LINE INPUT(VOLTS)
80
82
84
86
88
EFFICIENCY(%)
24 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
100% FULL LOAD
50% FULL LOAD
Data For 24 Volt Input Models
4
6
8
10
12
14
16
18
LINE INPUT (VOLTS)
0.0
0.5
1.0
1.5
INPUT
CURRENT
(AMPS)
12 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
100% LOAD
50% LOAD
0
1020
3040
50
6070
8090
100
LOAD (%)
65
70
75
80
85
EFFICIENCY
(%)
12 VOLT EFFICIENCY Vs. LOAD
LINE =
9VDC
LINE =
12VDC
LINE =
18VDC
9
1011
1213
1415
1617
18
LINE INPUT(VOLTS)
80
81
82
83
84
85
EFFICIENCY(%)
12 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
100% FULL LOAD
50% FULL LOAD
Data For 12 Volt Input Models
Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).
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