PO
www.recom-international.com
August 2002
POWERLINE - DC/DC-Converter
M-Series, 20 Watt, Surface-Mount (Single Output)
Output Voltage Adjustment
Output Overvoltage Protection
High Efficiency to 88%
Max. Operat. Temperature: 85C
Five-Sided Shield
Undervoltage Lockout
Remote On/Off Control
Over Current Protection,
unlimited Duration
Features
Part Number
Input
Output
Output
Ripple
Max. Capacitor
Efficiency
Range
Range
Current
& Noise
Load
(VDC)
(VDC)
(A)
(mVp-p)
(F)
(%)
RP20-4820SM
36-75
2.0
4.00
50
1500
82
RP20-4833SM
36-75
3.3
4.00
50
1500
84
RP20-4805SM
36-75
5.0
4.00
75
1500
88
RP20-4812SM
36-75
12.0
1.67
75
330
88
RP20-4815SM
36-75
15.0
1.33
75
330
88
Selection Guide
Specifications
(typical at nominal input and 25C unless otherwise noted)
Input Voltage Range 48V Nominal
36-75VDC
Input Filter
LC Type
Output Voltage Set-Point Accuracy
1%
Ripple and Noise (20MHz BW )
See table above
Line Regulation, HL-LL
0.2%
Load Regulation (100% to 10% full load)
0.5%
External Trim Adjustment Range
10% typ.
Efficiency
See Table
Temperature Coefficient
0.02%/C
Short Circuit Protection
Continuous. auto recovery
Transient Response Recovery Time (25% load step change)
500 s
Transient Voltage Peak Deviation
300mV, max.
Control Voltage
Compatibility
CMOS, TTL
(referenced to negative (-) input)
On-Control
4.8V min. or open
Off-control
0.4V max. or short
Switching Frequency
300kHz, typ.
Isolation Voltage
1600VDC min.
Isolation Resistance
10
9
min.
Operating Temperature Range
25C to +71C
+85C (see Graph)
Case Temperature
100C max.
Storage Temperature Range
-55C to +105C
Cooling
Free-air convection
EMI / RFI
Five-sided shield
Case Material
Non-conductive black plastic
Dimensions
49.5 x 30.2 x 10 mm
Output Power (%)
120
80
100
50
-25
125
Ambient Temperature C
0
25
100
60
40
20
Natural
Convection
Cooling
71
75
August 2002
PO
Pin Connections
Pin #
Function
1
Vo(+)
2
Vo()
3
N/C+
4
Trim
5
N/C+
6
N/C+
Pin #
Function
7
Turn-On Adjustment
(optional)
8
On/Off
9
Sync (optional)
10
N/C+
11
V1()
12
V1(+)
Package Style and Pinning (mm)
Pin Pitch Tolerances: x.x 0.6 mm, x.xx 0.4mm
9.7
No-slide mechanical
retaining pins, 2 places
2.0
0.30
0.1
1.8
0.25
1
2
3
4
5
6
Bottom View
30.23
max.
49.50
47.78
8.48
RP20-4812S
RECOM
****
33,50
43.48
3.51
2.5
38.51
13.49
1.75
35.3
1.27
dia.
12.07
2.8
3.3
10.0
36.8
31.2
5.0
30.0
40.0
35.0
3.02
13.11
43.0
4.1
7
8
9
10
11
12
1.6
Slot
POWERLINE - DC/DC-Converter
M-Series, 20 Watt, Surface-Mount (Single Output)
Recommended Footprint Details
Caution: Care must be taken to ensure the board in the
periphery of the footprint is flat.
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