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RPA50S-483.3SW/P Datasheet(PDF) 3 Page - Recom International Power

Part # RPA50S-483.3SW/P
Description  50Watt 1/16 Brick Single Output
PDF  8 Pages
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Manufacturer  RECOM [Recom International Power]
Direct Link  http://www.recom-international.com
Logo RECOM - Recom International Power

RPA50S-483.3SW/P Datasheet(HTML) 3 Page - Recom International Power

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OUTPUT VOLTAGE TRIMMING
continued on next page
DC/DC Converter
Specifications (measured @ ta = 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RPA50S-W
Series
Output Current [%]
0
0
10
10
20
20
30
30
40
40
50
50
60
60
70
70
80
80
90
90
100
100
18V
36V
48V
75V
Efficiency vs. Output Current
RPA50S-4812SW/P
PB-3
REV.: 0/2017
www.recom-power.com
18V
36V
48V
75V
Output Current [%]
2
1
3
10
0
20
30
40
50
60
70
80
90
100
0
4
5
7
8
10
9
6
Power Dissipation vs. Output Current
Output Voltage Trimming
RPA50S-W converters offer the feature of trimming the output voltage over a certain range around the nominal value by using external trim
resistors. The values for trim resistors shown in trim tables below are according to standard E96 values; therefore, the specified voltage may
slightly vary; they also can be calculated with below shown equation.
TRIM DOWN
TRIM UP
R1
TRIM
-Sense
TRIM
R2
+Sense
Practical Example:
Trim Up:
Trim down:
Vout = 12V,
DVout = +10% (13.2V)
Vout = 12V,
DVout = -10% (10.8V)
Trim Down:
Trim Calculation
Trim Up:
3.3, 5 Vout
12Vout
Vout
= Output Voltage
DVout = Output Voltage Change in %
R1
= trim up resistor
R2
= trim down resistor
R
1 =
5.11*Vout*(100 + DVout) - 511 - 10.22kΩ
1.24*DVout
DVout
R
1 =
5.11*12*(100 + 10) - 511 = 6745.2 -51.1-10.22= 489.3kΩ
1.24*10
10
12.24
R
1 =
5.11*Vout*(100 + DVout) - 511 - 10.22kΩ
1.225*DVout
DVout
R
2 =
511 -10.22
DVout
R
2 =
511 -10.22 = 40.88kΩ
10



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