參數(shù)資料
型號(hào)： VKA75MS28-61
元件分類： 電源模塊
英文描述： 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE
文件頁(yè)數(shù)： 3/4頁(yè)
文件大小： 63K
代理商： VKA75MS28-61
VKA75xS Rev A 7/98
Page 3
NOTES:
(1) See Typical Performance Curves, page 3
(2) Continuous Mode
(3) See graphs for Efficiency vs. Output Load, V
IN, TCASE
(4) 3.3V Models Limited in Trim Down Range
(5) Consult Factory for Details
ORDERING INFORMATION
VKA75 xSzz-
Device Family
Indicates 75 Watt Regulated Unit
Model Number
Selected from Table of Electrical Characteristics
Where:
x = Input Voltage (L = 24VDC; M = 48VDC)
zz = Output Voltage (03=3.3V, 05=5V, etc.)
Lead Length
0.200" -
No Number
0.145" -
(6)
0.110" -
(8)
Remote On-Off Logic:
Positive - No Number
Negative - (1)
TYPICAL PERFORMANCE CURVES
T
A = +40°C, nominal input voltage, rated load, recommended external components applied, unless otherwise specified.
3.3V
5V
28V
0
20
40
60
80
100
70
75
80
85
90
95
EFFICIENCY vs OUTPUT LOAD
Efficiency
(%)
Output Load (% of Rated)
15V
OUTPUT RIPPLE vs INPUT VOLTAGE
Nor
maliz
ed
Output
Ripple
Vin (VDC)
1.50
1.25
1.00
0.75
0.50
12V
Dissipated
P
o
w
e
r,
P
D
(W)
Ambient Temperature (°C)
POWER DERATING WITH NO HEATSINK
Natural
Convection
0
10
25
50
75
100
400 LFM
Airflow
200 LFM
Airflow
12
2
4
6
8
Vin, min
Vin, typ
Vin, max
0
20
40
60
80
100
70
75
80
85
90
95
EFFICIENCY vs OUTPUT LOAD
Efficiency
(%)
Output Load (% of Rated)
Change
in
Efficiency
(%)
-10
-5
TYP
+5
+10
50% Load
10% Load
EFFICIENCY vs INPUT VOLTAGE
Vin (VDC)
Vin, min
Vin, typ
Vin, max
EFFICIENCY vs TEMPERATURE
Change
in
Efficiency
(%)
20% Load
100% Load
-55
+25
+105
Tcase (°C)
-15
+65
+5
-5
-10
TYP
+10
100% Load
24V
REFLECTED RIPPLE CURRENT
vs TEMPERA
TURE
-55
+25
+105
Tcase (°C)
+100
TYP
-100
Change
in
Reflected
Ripple
Current
(%)
-15
+65
-50
+50
OUTPUT RIPPLE vs TEMPERATURE
-55
+25
+105
Tcase (°C)
3.0
1.0
0.33
Nor
malized
Output
Ripple
-15
+65
0.5
2.0
14
16
24V
28V
15V
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