DC DC
20 Watts
RDC Series
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xppower.com
72 & 110 VDC Input for Railway Applications
Single and Dual Outputs
1500 VAC Basic Isolation
High Power Density
High Efficiency
Remote On/Off
3 Year Warranty
Up to 88%
Specification
Input
Input Voltage Range
Input Current
Input Reflected Ripple
Input Filter
Undervoltage Lockout
Input Surge
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72 V (36-140 VDC), 110 V (55-176 VDC)
See table
20 mA pk-pk through 12 µH inductor
Pi network
72 V models: ON 33.5 V, OFF 30.5 V typ.
110 V models: ON 52.5 V, OFF 48.5 V typ.
• 72 V models 150 VDC for 100 ms
110 V models 185 VDC for 100 ms
General
Efficiency
Isolation Voltage
• See table
• 1500 VAC Input to Output
1600 VDC Input to Case
1600 VDC Output to Case
• 2000 pF
• 270 kHz typical
• 25 W/in
3
• 400 kHrs min to MIL-HDBK-217F at 25 °C,
GB
Output
Output Voltage
Output Voltage Trim
Minimum Load
Line Regulation
Load Regulation
Cross Regulation
Setpoint Accuracy
Start Up Time
Ripple & Noise
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See table
±10% on single outputs models only
No minimum load required
±0.2% max
Single output models: ±0.5% max,
Dual output models: ±1% max balanced
outputs
±5% (see note 2)
±1%
30 ms typical
100 mV or 1% pk-pk for single output
models, 150 mV or 1% pk-pk for dual
output model, whichever is greater,
20 MHz bandwidth (see note 3)
4% max deviation, recovery to within
1% in <500 µs for a 25% load change
0.02%/°C
3.3 V models: 3.9 V typical, 5 V models:
6.2 V typical, 12 V models: 15 V typical
15 V models: 18 V typical, ±5 V models:
±6.2 V typical, ±12 V models: ±15 V typical
±15 V models: ±18 V typical
>150% of full load
Trip & restart (hiccup mode), auto recovery
115 °C typical
Isolation Capacitance
Switching Frequency
Power Density
MTBF
Environmental
Operating Temperature
Case Temperature
Cooling
Operating Humidity
Storage Temperature
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-40 °C to +85 °C (see derating curve)
+105 °C max
Convection-cooled
5-95% RH, non-condensing
-40 °C to +125 °C
EMC
General
Emissions
ESD Immunity
Radiated Immunity
EFT/Burst
Surge
Conducted Immunity
Magnetic Field
• Complies with EN50121-3-2, Railway
Applications - Electromagnetic
Compatibility for Rolling Stock Apparatus
• EN55011, 79 dBµV (0.15-0.5 MHz)
73 dBµV (0.5-30 MHz)
• EN61000-4-2, level 3, Perf Criteria A
• EN61000-4-3 20 V/m Perf Criteria A*
• EN61000-4-4 level 3, Perf Criteria A*
• EN61000-4-5 level 2, Perf Criteria A
• EN61000-4-6 10 V/rms, Perf Criteria A
• EN61000-4-8 10 A/m, Perf Criteria A
Transient Response
•
Temp. Coefficient
•
Overvoltage Protection
•
Overload Protection
Short Circuit Protection
Overtemperature
Protection
Remote On/Off
Maximum Capacitive
Load
•
•
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*External input capacitor required 220 µF/250 V
• On = Logic High (>3.0) or Open
Off = Logic Low (<1.2 V) or short pin 2 to 3
• See table
Models and Ratings
Input Voltage
Output Voltage
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Output Current
6.00 A
4.00 A
1.65 A
1.33 A
±2.00 A
±0.83 A
±0.67 A
6.00 A
4.00 A
1.65 A
1.33 A
±2.00 A
±0.83 A
±0.67 A
Input Current
(1)
No Load
Full Load
20 mA
312 mA
25 mA
313 mA
15 mA
318 mA
20 mA
318 mA
35 mA
319 mA
20 mA
323 mA
20 mA
324 mA
15
20
15
15
30
15
15
mA
mA
mA
mA
mA
mA
mA
208
209
212
211
211
215
215
mA
mA
mA
mA
mA
mA
mA
Maximum
Capacitive Load
10000
6800
1000
700
±1000
±470
±330
10000
6800
1000
700
±1000
±470
±330
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
88.0%
88.5%
86.5%
87.0%
87.0%
85.5%
86.0%
86.5%
87.0%
85.0%
86.0%
86.0%
84.0%
85.0%
RDC20
Efficiency
Model Number
(4)
RDC2072S3V3
RDC2072S05
RDC2072S12
RDC2072S15
RDC2072D05
RDC2072D12
RDC2072D15
RDC20110S3V3
RDC20110S05
RDC20110S12
RDC20110S15
RDC20110D05
RDC20110D12
RDC20110D15
DC DC
36-140 VDC
55-176 VDC
Notes
1. Input current specified at nominal 72 V or 110 V input.
2. Cross regulation for duals is ±5% when one output is at 100% and the other is
varied between 25% and 100%.
3. Measured with 1 µF ceramic capacitor in parallel with 10 µF electrolytic
capacitor across output rails.
4. Add suffix ‘-HK’ for optional heatsink.
Mechanical Details
0.10
(2.54)
0.10
(2.54)
0.40
0.40
(10.16) (10.16)
0.10
(2.54)
0.40
(10.16)
Optional
Heatsink
4
5
6
0.10
(2.54)
DIA
0.04
(1.00)
0.02
(0.50)
1.73
(43.9)
2.00
(50.8)
Bottom View
Single & Dual
Output Models
0.17
(4.36)
DIA
0.04
(1.00)
Pin
1
2
3
4
5
6
PIN CONNECTIONS
Single
Dual
+Vin
+Vin
-Vin
-Vin
Remote On/Off
Remote On/Off
+Vout
+Vout
-Vout
Com
Trim
-Vout
Notes
1.
2.
3.
4.
5.
0.24
(6.00)
0.64
(16.3)
0.32
(8.00)
1
2
3
All dimensions are in inches (mm).
Weight: 0.07 lbs (30 g) approx
Pin diameter: 0.04 ±0.002 (1.0 ±0.05)
Pin pitch tolerance: ±0.014 (±0.35)
Case tolerance: ±0.02 (±0.5)
0.30
(7.62)
0.20
0.30
(5.08)
(7.62)
Application Notes
Derating Curve
100
90
80
70
External Output Trim
On single output versions only.
6
R trim-up
5
without heat-sink
with heat-sink
6
R trim-down
4
Output can be externally
trimmed using this method.
Contact sales for details.
Load (%)
60
50
40
30
20
10
0
-40 -30 -20 -10
0
Trim Down 10%
Trim Up 10%
Typical Resistor
S3V3
S05
15.3 kΩ
5.31 kΩ
10.3 kΩ
10.6 kΩ
S12
5.3 kΩ
22.1 kΩ
S15
5.8 kΩ
20.0 kΩ
10 20 30 40 50 60 70 80 90 100
Ambient Temperature (°C)
03-Mar-14
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