RDC40 Series
40 Watts
• 72 & 110 VDC Input for Railway Applications
• Single and Dual Outputs
• 1500 VAC Basic Isolation
• High Efficiency - Up to 90%
• Remote On/Off
• Complies with EN50155
• EN50121-3-2 EMC for Railway Applications
• 3 Year Warranty
DC-DC Power Supplies
Dimensions:
The RDC40 series of 40W DC-DC converters are designed for railway applications and comply with
EN50121-3-2, the EMC standard for rolling stock apparatus. There are two input voltage ranges.
The 72 VDC nominal models accept an input from 36 to 140 VDC and the 110 V nominal versions
have a 55 to 176 VDC input. A trim pin allows a +/-10% adjustment for single output models.
Using convection cooling the converters have a wide operating temperature range of -40°C to
+85°C and a maximum case temperature of 105°C.
RDC40:
2.00 x 1.60 x 0.4” (50.8 x 40.6 x 10.16 mm)
Models & Ratings
Input Voltage
Output Voltage
3.3 V
5.0 V
12.0 V
15.0 V
±12.0 V
±15.0 V
3.3 V
5.0 V
12.0 V
15.0 V
±12.0 V
±15.0 V
Output Current
10.00
8.00
3.35
2.65
±1.65
±1.35
10.00
8.00
3.35
2.65
±1.65
±1.35
A
A
A
A
A
A
A
A
A
A
A
A
Input Current
(1)
No Load
Full Load
30 mA
526.82 mA
30 mA
617.28 mA
25 mA
641.76 mA
25 mA
627.37 mA
30 mA
632.18 mA
30 mA
639.20 mA
20
25
25
25
20
20
mA
mA
mA
mA
mA
mA
344.83
408.58
420.06
410.64
413.79
420.78
mA
mA
mA
mA
mA
mA
Maximum
Capacitive Load
25000
2000
2500
2500
±1600
±1600
25000
2000
2500
2500
±1600
±1600
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
µF
Efficiency
87.0%
90.0%
87.0%
88.0%
87.0%
88.0%
87.0%
89.0%
87.0%
88.0%
87.0%
87.5%
Model Number
(2)
RDC4072S3V3
RDC4072S05
RDC4072S12
RDC4072S15
RDC4072D12
RDC4072D15
RDC40110S3V3
RDC40110S05
RDC40110S12
RDC40110S15
RDC40110D12
RDC40110D15
36-140 VDC
55-176 VDC
Notes
1. Input current specified at nominal 72 V or 110 V input.
2. Add suffix ‘-HK’ for optional heatsink.
Input
Characteristic
Input Voltage - Operating
Input Current
Input Reflected Ripple
Input Filter
Undervoltage Lockout
Input Surge
OFF: 30.5
OFF: 48.5
ON: 33.5 V
ON: 52.5 V
150
185
V
VDC
20
mA
Minimum
36
55
Typical
Maximum
140
176
Units
VDC
Notes & Conditions
72 V nominal
110 V nominal
See models and ratings table
Through 12 µH inductor and 33 µF capacitor
Pi network
72 V models
110 V models
72 V models (for 100 ms)
110 V models (for 100 ms)
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RDC40 Series
Output
Characteristic
Output Voltage
Output Voltage Trim
Minimum Load
Line Regulation
Load Regulation
Cross Regulation
Setpoint Accuracy
Start Up Time
±5
±1
30
100
150
0
±0.2
±0.5
±1.0
±10
Min.
Typ.
Max.
Units
VDC
%
A
%
%
%
%
ms
mV pk-pk
mV pk-pk
DC-DC Power Supplies
Notes & Conditions
See Models and Ratings table
On single outputs models only
Single output models
Dual output models (balanced outputs)
Dual output models, when one load is varied between 25% and 100% and the other
is fixed at 100%
Ripple and Noise
Single output models
Dual output model
Measured with 20 MHz bandwidth in parallel with 1 µF ceramic capacitor across
output rails
Deviation, recovery to within 1% in <500 µs for a 25% load change
Transient Response
4
%
Overvoltage Protection
3.9
6.2
15.0
18
±15
±18
130
115
V
3.3 V Models
5.0 V Models
12 V Models
15 V Models
±12 V Models
±15 V Models
Of Full Load
Trip and restart (hiccup mode, auto recovery)
Case temperature
On = Logic High (>3.0) or Open
Off = Logic Low (<1.2 V) or short pin 2 to 3
See Models and Ratings table
Overload Protection
Short Circuit Protection
Overtemperature Protection
Remote On/Off
Maximum Capactitive Load
%
°C
General
Characteristic
Efficiency
Isolation: Input to Output
Input to Case
Output to Case
Switching Frequency
Power Density
Mean Time Between Failure
Weight
320
0.105 (48)
270
31
Minimum
Typical
88
1500
1600
1600
Maximum
Units
%
VAC
VDC
VDC
kHz
W/in
3
kHrs
lb (g)
MIL-HDBK-217F at 25 °C GB
Notes & Conditions
See Models and Ratings table
Environmental
Characteristic
Operating Temperature
Case Temperature
Cooling
Operating Humidity
Storage Temperature
-55
95
+125
%RH
°C
Minimum
-40
Typical
Maximum
+85
+105
Units
°C
°C
Notes & Conditions
See derating curve in Applications Note
See derating curve in Applications Note
Convection-cooled
Non-condensing
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2
RDC40 Series
EMC: Emissions
Phenomenon
General
Emissions
EN55011
Standard
DC-DC Power Supplies
Test Level
79 dBµV / 73 dBµV
Notes & Conditions
0.15-0.5 MHz / 0.5-30 MHz
Complies with EN50155 & EN50121-3-2, Railway Applications - Electromagnetic Compatibility for Rolling Stock Apparatus
EMC: Immunity
Phenomenon
ESD
Radiated
EFT
Surges
Conducted
Magentic Field
Standard
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
Test Level
3
20 V/m
3
2
10 Vrms
10 A/m
Criteria
A
A
A
A
A
A
External Input Capacitor required 220 µF / 250 V
Notes & Conditions
Safety Approvals
Safety Agency
TUV
CE
Safety Standard
EN60950-1:2006 + A12: 2011
LVD & RoHS
Notes & Conditions
Information Technology
Application Notes
Derating Curve
External Output Trim
On single output versions only.
100
Output Power (%)
Without heat-sink
75
50
35
25
With heat-sink
6
R trim-up
5
6
R trim-down
4
Output can be externally
trimmed using this method.
-40
-20
0
20
40
50
60
75
80
85
100
120
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
Ambient Temperature (°C)
3
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RDC40 Series
Mechanical Details
DC-DC Power Supplies
1.6 (40.6)
0.10
(2.54)
0.40
(10.14)
0.40
(10.16)
0.40
(10.16)
0.40
(10.14)
Dia. 0.04
(1.00)
0.40
(10.16)
Optional heatsink (-HK)
4
5
6
0.32
(8.0)
0.50
(0.02)
2.0
(50.8)
Dia. 0.04
(1.00)
2.0
(50.8)
1.73
(43.9)
Single and Dual Output Models
Bottom View
0.10
(2.54)
1
2
3
0.32
(8.0)
0.17
(4.36)
0.60
(15.22)
0.20 0.30
(5.08) (7.62)
0.50
(12.68)
6.0
(0.24)
Thermal Pad
Notes
1. Dimensions shown in inches (mm).
2. Weight: 0.105 lbs (48.0 g)
3. Pin diameter: 0.04 ±0.002 (1.0 ±0.05)
4. Pin pitch tolerance: ±0.014 (±0.35)
5. Case tolerance: ±0.02 (±0.5)
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
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06 Dec 16
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