116
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April-2005
20 Watt
2" x 2"
Single
&
&
Dual Output
ECONOLINE
DC/DC-Converter
REC20-
S_DRWB
Series
20W 2"x 2" Package (50.8x50.8x21.0mm)
1kVDC Isolation
Wide Input 2:1
Regulated Output
UL94V-0 Package Material
Continuous Short Circuit Protection
No External Components Required
Six-Side Shielded Case
100% Burned In
Industry Standard Package
Remote ON/OFF and Trim
Efficiency to 85%
Features
Regulated
Converters
Selection Guide
Part
Input Output Output Input Current
1)
Efficiency
2)
Number Voltage Voltage
Current
(mA)
2" x 2" (VDC) (VDC)
(mA) Full Load No Load
(%)
REC20-1205SRWB 9-18 5
4.000 2.083 30
80
REC20-1212SRWB 9-18 12 1.667 2.058 30
81
REC20-1215SRWB 9-18 15
1.333 2.058 28
81
REC20-2405SRWB 18-36 5
4.000 1.041 18
80
REC20-2412SRWB 18-36 12 1.667 980 18
85
REC20-2415SRWB 18-36 15
1.333 980 18
85
REC20-4805SRWB 36-72 5
4.000 521 10
80
REC20-4812SRWB 36-72 12 1.667 508 9
82
REC20-4815SRWB 36-72 15
1.333 508 9
82
REC20-1205DRWB 9-18 5
2.000 2.083 30
80
REC20-1212DRWB 9-18 12 833 2.033 30
82
REC20-1215DRWB 9-18 15
667 2.033 28
82
REC20-2405DRWB 18-36 5
2.000 1.041 18
80
REC20-2412DRWB 18-36 12 833 980 18
85
REC20-2415DRWB 18-36 15
667 980 18
85
REC20-4805DRWB 36-72 5
2.000 521 10
80
REC20-4812DRWB 36-72 12 833 508 9
82
REC20-4815DRWB 36-72 15
667 508 9
82
1. at Nominal Input Voltage.
2. at Nominal Input Voltage and Full Load.
Notes:
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117
April-2005
Output Power (%)
120
100
20
60
100
75
0
-25
Operating Temperature (C)
0
80
50
25
71
Safe Operating Area
40
Derating-Graph
(Ambient Temperature)
Input Voltage Range
2:1
Output Voltage Accuracy
2% max.
Line Regulation (HL-LL)
0.2% max.
Load Regulation (for output load current change from 20% to 100%)
0.2% max.
Over Voltage Protection
Built-In
External Trim Adjustment Range
10%
Ripple and Noise (0,1F capacitor on output, 20MHz BW)
100mVp-p max.
Switching Frequency at Full Load
100kHz typ.
Input Filter
Pi Network
Efficiency at Full Load
75% min.
Isolation Voltage
(tested for 1 second)
1.000VDC min.
Rated Working Voltage
(long term isolation)
see Application Notes
Isolation Capacitance
1200pF max.
Isolation Resistance
1 G
min.
Short Circuit Protection
Continuous
Operating Temperature (free air convection) -25C to +71C (see Graph)
Storage Temperature Range
-55C to +100C
Relative Humidity MSL Level 1
95% RH
Case Material
Six-Side Shielded Case
Package Weight
110 g
MTBF (+25C) using MIL-HDBK 217F
700 x 10
3
hours
(+71C) using MIL-HDBK 217F
560 x 10
3
hours
Specifications (Core Operating Area)
REC20-S_DRWB
Series
ECONOLINE
DC/DC-Converter
Simplified Schematic
+Vout
Isolation
Reference
& Error AMP
-Vout
+Vin
-Vin
PWM
Controller
Com
Single Output
Dual Output
+Vout
Isolation
Reference
& Error AMP
-Vout
+Vin
-Vin
PWM
Controller
}
Detailed Information see
Application Notes chapter "MTBF"
118
www.recom-international.com
April-2005
Load
Load
+Vout
Vout
Trim
5
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
6
Trim Up
Com
Load
Load
Com
+Vout
Vout
Trim
5
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
6
Trim Down
Load
+Vout
Vout
Trim
6
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
Load
Load
+Vout
Vout
5
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
Trim
Com
6
Load
+Vout
Vout
Trim
6
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
Trim Down
20
kW
Trim Up
Load
Load
+Vout
Vout
5
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
6
Trim Down
Trim
Com
Trim Up
Load
+Vout
Vout
Trim
6
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
Trim Up
Load
+Vout
Vout
Trim
6
+Vin
Vin
8
7
DC/DC
Converter
Input
Output
4
3
Trim Down
20
kW
Single Output
Fixed Voltage Output
Trim Connections Using a Trimpot
Fixed-Value Trim Down Resistor
Fixed-Value Trim Up Resistor
Dual Output
ECONOLINE
DC/DC-Converter
REC20-S_DRWB
Series
Typical Characteristics
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119
April-2005
5.80
21.00
50.80
1
3
Bottom View
4
5
6
7
8
Top View
Side View
30.48
50.80
45.72
22.9
15.24
2.5
12.7
4 3
1
8
7
6
5
2.54
1.2+0.2/0.1
2.54
3rd angle
projection
Recommended Footprint Details
Package Style and Pinning (mm) 2" x 2" , Wide Input 2:1
REC20-S_DRWB
Series
ECONOLINE
DC/DC-Converter
2" x 2" PIN Package
XX.X 0.5 mm
XX.XX 0.25 mm
Pin Connections
Pin #
Single
Dual
1
Remote On/Off
Remote On/Off
3
Vin
Vin
4
+Vin
+Vin
5
No Pin
+ Vout
6
+ Vout
Com
7
Vout
Vout
8
Trim
Trim
Remote On/Off Control
Control Input
Pin 1
Control Common
Pin 3
Control Voltage
Converter Shutdown Idle Current
10mA
ON
> +2.5VDC or Open Circuit
Logic Compatibility
CMOS or Open
Off
> +0.8VDC or Jumper to Pin 3
Collector TTL
Typical Characteristics
Efficiency %
100
0
40%
100%
40
Efficiency / Load
60%
80%
20%
20
60
80
Total Output current (%)
R
RE
EC
C2
20
0 -- ttyyp
pe
ess
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