no suffix for CTRL function with Positive Logic (1=ON, 0=OFF), and trim pin
add “N” for CTRL function with Negative Logic (0=ON, 1=OFF), and trim pin
add suffix -HC for premounted Heat-sink and clips
www.recom-power.com
REV.: 2/2017
PD-1
RP20-FW
DC/DC Converter
Specifications
measured at Ta = 25°C, nominal input voltage, full load otherwise noted
BASIC CHARACTERISTICS
Parameter
Input Voltage Range
Series
Condition
nom. Vin = 24V
nom. Vin = 48V
Vin = 24V
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
Min.
9VDC
18VDc
Typ.
24VDC
48VDC
7.5VDC
Max.
36VDC
75VDC
9VDC
18VDC
Under Voltage Lockout (UVLO)
Vin = 48V
Input Filter
Input Reflected Ripple Current
Input Surge Voltage
Start-up time
Operating Frequency Range
Minimum Load
(5)
Optional Output Trim
Ripple and Noise
15VDC
Pi-Type
20mAp-p
50VDC
100VDC
20ms
20ms
360kHz
0%
±10%
400kHz
440kHz
nominal Vin and full load
Vin = 24V, 100ms max.
Vin = 48V, 100ms max.
Power up
Remote ON/OFF
3.3V
measured by 20MHz bandwidth
5.0V, 12V, 15V
with a 0.1µF/50V MLCC
Dual
Positive Logic
DC-DC ON
DC-DC OFF
DC-DC ON
DC-DC OFF
DC-DC OFF
DC-DC ON
-0.5mA
60mVp-p
75mVp-p
100mVp-p
Open or 3.0V < Vr < 12V
Short or 0V < Vr < 1.2V
Short or 0V < Vr < 1.2V
Open or 3.0V < Vr < 12V
2mA
0.5mA
Remote ON/OFF
(6)
Negative Logic
Input current of Remote pin (CTRL)
Notes:
Note5:
Note6:
The RP20-FW series requires a minimum of 10% loading on the output to maintain specified regulation.
Operation under no-load condition will not damage these devices, however they may not meet all listed
specification.
The ON/OFF control function can be positive or negative logic. The pin voltage is referenced to -Vin pin.
RP20-2405SFW
95
90
85
80
Efficiency vs. Output Current
95
90
85
Efficiency vs. Input Voltage
Efficiency [%]
Efficiency [%]
9Vin
24Vin
36Vin
10
20
30
40
50
60
70
80
90
100
75
70
65
60
55
50
45
40
80
75
70
65
60
18
20
22
24
26
28
30
32
34
36
Output Current [%]
Input Voltage [VDC]
continued on next page
PD-2
REV.: 2/2017
www.recom-power.com
RP20-FW
DC/DC Converter
Specifications
measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-4805SFW
Efficiency vs. Output Current
95
90
85
Series
Efficiency vs. Input Voltage
90
88
Efficiency [%]
80
75
70
65
60
55
50
45
40
10
20
30
40
50
60
70
80
18Vin
48Vin
75Vin
90
100
Efficiency [%]
86
84
82
80
78
18
24
30
36
42
48
54
60
66
75
Output Current [%]
Input Voltage [VDC]
REGULATIONS
Parameter
Output Voltage Accuracy
Voltage Adjustability
Line Voltage Regulation
Load Voltage Regulation
Cross Regulation
Transient Response recovery time
Single
low line to high line at Single
full load Dual
no load to full load
Single
Dual
Condition
Value
±1.0%
±10%
±0.2%
±0.5%
±0.5%
±1.0%
±5%
250µs
asymmetrical 25%<>100% load
25% load step change
External Output Trimming
Output Voltage Trimming
Single output Powerline converters offer the feature of trimming the output voltage over a certain range around the nominal value by using external
trim resistors. No general equation can be given for calculating the trim resistors, but the following trimtables give typical values for chosing these
trimming resistors. If voltages between the given trim points are required, extrapolate between the two nearest given values to work out the resis tor
required or use a variable resistor to set the output voltage. Output can be externally trimmed by using the method shown below.
Trim up
5
RU
4
3
4
Trim down
RD
RP20-xx3.3SF
Trim up
Vout =
R
U
=
Trim down
Vout =
R
D
=
1
3.333
57.93
1
3.267
69.47
2
3.366
26.16
2
3.234
31.23
3
3.399
15.58
3
3.201
18.49
4
3.432
10.28
4
3.168
12.12
5
3.465
7.11
5
3.135
8.29
6
3.498
4.99
6
3.102
5.74
7
3.531
3.48
7
3.069
3.92
8
3.564
2.34
8
3.036
2.56
9
3.597
1.46
9
3.003
1.50
10
3.63
0.75
10
2.97
0.65
%
Volts
kOhms
%
Volts
kOhms
continued on next page
www.recom-power.com
REV.: 2/2017
PD-3
RP20-FW
DC/DC Converter
Specifications
measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-xx05SFW
Trim up
Vout =
R
U
=
Trim down
Vout =
R
D
=
1
5.05
36.57
1
4.95
45.53
2
5.10
16.58
2
4.90
20.61
3
5.15
9.92
3
4.85
12.31
4
5.20
6.58
4
4.80
8.15
5
5.25
4.59
5
4.75
5.66
6
5.30
3.25
6
4.70
4.00
7
5.35
2.30
7
4.65
2.81
8
5.4
1.59
8
4.60
1.92
9
5.45
1.03
9
4.55
1.23
10
5.50
0.59
10
4.50
0.68
%
Volts
kOhms
%
Volts
kOhms
Series
RP20-xx12SFW
Trim up
Vout =
R
U
=
Trim down
Vout =
R
D
=
1
12.12
367.91
1
11.88
460.99
2
12.24
165.95
2
11.76
207.95
3
12.36
98.64
3
11.64
123.60
4
12.48
64.98
4
11.52
81.42
5
12.60
44.78
5
11.40
56.12
6
12.72
31.32
6
11.28
39.25
7
12.84
21.70
7
11.16
27.20
8
12.96
14.49
8
11.04
18.16
9
13.08
8.88
9
10.92
11.13
10
13.20
4.39
10
10.8
5.51
%
Volts
kOhms
%
Volts
kOhms
RP20-xx15SFW
Trim up
Vout =
R
U
=
Trim down
Vout =
R
D
=
1
15.15
404.18
1
14.85
499.82
2
15.3
180.59
2
14.70
223.41
3
15.45
106.06
3
14.55
131.27
4
15.60
68.80
4
14.40
85.20
5
15.75
46.44
5
14.25
57.56
6
15.90
31.53
6
14.10
39.14
7
16.05
20.88
7
13.95
25.97
8
16.20
12.90
8
13.80
16.10
9
16.35
6.69
9
13.65
8.42
10
16.50
1.72
10
13.50
2.282
%
Volts
kOhms
%
Volts
kOhms
PROTECTIONS
Parameter
Short Circuit Protection (SCP)
3.3Vout
5Vout
Zener Diode Clamp
12Vout
15Vout
% of Iout rated
I/P to O/P
I/P to O/P to case
500 VDC
Condition
Value
continuous, automatic recovery
3.9VDC typ.
6.2VDC typ.
15VDC typ.
18VDC typ.
150% typ.
1.6kVDC/1 minute
1.6kVDC/1 minute
1GΩ min.
1500pF max.
Over Voltage Protection (OVP)
Over Load Protection (OLP)
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Notes:
Note7: This power module is not internally fused. An input line fuse must always be used.
PD-4
REV.: 2/2017
www.recom-power.com
RP20-FW
DC/DC Converter
Specifications
measured at Ta = 25°C, nominal input voltage, full load otherwise noted
ENVIRONMENTAL
Parameter
Operating Temperature Range
Maximum Case Temperature
Temperature Coefficient
Thermal Impedance
Operating Humidity
Thermal Shock
Vibration
MTBF
MIL-HDBK-217F
Bellcore TR-NWT-000332
(8)
Natural convection (20LFM)
Natural convection (20LFM) with Heat-sink
Series
Condition
without derating
with derating
Value
-40°C to +72°C
-40°C to +105°C
+105°C
±0.02%/°C max.
12°C/Watt
10°C/Watt
5% - 95% RH
MIL-STD-810F
MIL-STD-810F
1851 x 10
3
hours
2350 x 10
3
hours
Derating Graph
(9)
RP20-4805SFW
100
80
60
40
20
0
-40
100
80
60
40
20
0
-40
RP20-4805SFW with Heat-sink
Output Power [%]
-20
0
20
40
60
Ambient Temperature [°C]
72
80
100 120
105
Output Power [%]
-20
0
20
40
60
Ambient Temperature [°C]
80
78
100 120
105
Notes:
Note8: BELLCORE TR-NWT-000332. Case l: 50% Stress, Temperature at 40°C (Ground fixed and controlled environment).
Note9: Derating graphs are valid only for the shown part numbers. If you need detailed derating-information about a part-
number not shown here please contact our technical support service at techsupportAT@recom-power.com
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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