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參數(shù)資料
| 型號： | 5S3.2000LV |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 12 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 133K |
| 代理商： | 5S3.2000LV |
A
12 Watt LV 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
7
3/2001
Efficiency of the converter is approximately 72% at 9 watts
of output power, this leads to an input power of about 13 watts.
The case temperature rise would be 13 - 9 watts or 4 watts
×
9.5 = 38°C. This number is subtracted from the maximum
case temperature of 85°C to get: 47°C.
This example calculation is for an LV Single without any
extra heat sinking or appreciable air flow. Both of these factors
can greatly effect the maximum ambient temperature (see
below). Exact efficiency depends on input line and load
conditions, check the efficiency curves for exact information.
This is a rough approximation to 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,
these calculations should be verified by actual measurement
before committing to a production design.
Remember, it is the system designers responsibility to be
sure that the case temperature of the LV Single does not
exceed 85°C for maximum reliability in operation.
2)
The efficiency curves are for 12 volt output. To use the curves
for other models adjust as follows:
3 volt models subtract approximately 4%
5 volt models subtract approximately 2%
15 volt models add approximately 1%
NOTES ON USING THE CURVES
1)
The input currents are for 12 watts of input power. For 3.33 volt
output models the input current is approximately 40% less. For
5 volt output models the current is approximately 16% less.
4
6
8
1012
1416
LINE INPUT(VOLTS)
65
70
75
80
85
EFFICIENCY(%)
EFFICIENCY Vs. LINE INPUT VOLTAGE
100% FULL LOAD
50% FULL LOAD
4
6
8
1012
1416
LINE INPUT (VDC)
0.0
0.5
1.0
1.5
2.0
2.5
RMS
INPUT
CURRENT
(ARMS)
RMS INPUT CURRENT Vs LINE INPUT
100% LOAD
75% LOAD
50% LOAD
3.50
3.75
4.00
4.25
4.50
4.75
5.00
LINE INPUT (VDC)
0
20
40
60
80
100
120
%
AVAILABLE
POWER
LOW VOLTAGE POWER AVAILABLE
0
1020
3040
50
6070
8090
100
LOAD (%)
60
65
70
75
80
85
EFFICIENCY
(%)
EFFICIENCY Vs. LOAD
LINE = 5 VDC
LINE = 16 VDC
0
2
4
6
8
10
12
14
16
LINE INPUT (VOLTS)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
INPUT
CURRENT
(AMPS)
INPUT CURRENT Vs. LINE INPUT VOLTAGE
100% LOAD
50% LOAD
10
100
1000
10000
100000
1000000
FREQUENCY (Hz)
.01
.1
1
10
OUTPUT
IMPEDANCE
(OHMS)
OUTPUT IMPEDANCE Vs. FREQUENCY
5 V OUTPUT
12/15 V OUTPUT
Typical Performance (Tc=25°C, Vin=Nom VDC, Rated Load).
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