DATASHEET
Rev. A
DCREDUW20 SERIES
4:1 Ultra Wide Input Voltage Range
Single and Dual Outputs
Standard 2.0” x 1.0” x 0.4” Package
20 Watt DC/DC Power Converters
FEATURES
Railway Applications
Single and Dual Outputs
Industry Standard 2.00” x 1.00” x 0.40” Package
20 Watts Maximum Output Power
4:1 Ultra Wide Input Voltage Range
High Efficiency up to 89%
1600VDC I/O Isolation
APPLICATIONS
Railway Systems
Wireless Networks
Telecom / Datacom
Measurement Equipment
Industry Control Systems
Output Current up to 4.5A
Positive Logic Remote On/Off
Fixed Switching Frequency
Over Voltage, Over Current, and Short Circuit Protection
Ultra Low Quiescent Current
Six-Sided Continuous Shield
CE Mark Meets 2006/95/EC, 93/68/EEC, and 2004/108/EC
Compliant to RoHS EU Directive 2002/95/EC
UL60950-1, EN60950-1, IEC60950-1, and EN50155 Safety Approvals
(Pending)
Semiconductor Equipment
OPTIONS
Without Trim Pin
Without OnOff Pin
Negative Logic Remote On/Off
DESCRIPTION
The DCREDUW20 series of DC/DC power converters provides up to 20 Watts of output power in an industry standard 2.00” x 1.00” x
0.40” package and footprint. This series has single and dual output models with 4:1 ultra wide input voltage ranges of 9-36VDC, 18-
75VDC, and 43-160VDC. Some features include high efficiency, 1600VDC I/O isolation, six-sided shielding, and positive logic
remote ON/OFF. These converters are also protected against over voltage, over current, and short circuit conditions. All models are
RoHS compliant and have UL60950-1, EN60950-1, and IEC60950-1, and EN50155 safety approvals (pending). This series is best
suited for use in wireless networks, telecom/datacom, measurement equipment, industry control systems, semiconductor equipment,
and railway systems.
01/13/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 1 of 5
Rev. A
DCREDUW20 Series
Single & Dual Outputs
4:1 Input Voltage Range
20 Watt DC/DC Power Converters
SPECIFICATIONS:
DCREDUW20 Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
SPECIFICATION
INPUT SPECIFICATIONS
Input Voltage Range
TEST CONDITIONS
24VDC nominal input models
48VDC nominal input models
110VDC nominal input models
24VDC nominal input models
48VDC nominal input models
110VDC nominal input models
24VDC nominal input models
48VDC nominal input models
110VDC nominal input models
24VDC nominal input models
48VDC nominal input models
110VDC nominal input models
24VDC & 48VDC nominal input models
110VDC nominal input models
Nominal Vin and full load
Min
9
18
43
Nom
24
48
110
Max
36
75
160
50
100
170
9
18
43
Unit
VDC
Input Surge Voltage (1 sec max)
VDC
Start-Up Voltage
VDC
Shutdown Voltage
Input Filter
Input Reflected Ripple Current
OUTPUT SPECIFICATIONS
Output Voltage
Line Regulation
8
16
40
Common choke
Pi filter
30
See Table
VDC
mAp-p
Low line to high line at full load
No load to full load
Load Regulation
10% Load to 90% Load
Cross Regulation (Dual Outputs)
Voltage Accuracy
Voltage Adjustability
(See Note 5)
Output Power
Output Current
Ripple & Noise (20MHz)
Transient Response Recovery Time
Start-Up Time
Minimum Load
Temperature Coefficient
PROTECTION
Over Load Protection
Short Circuit Protection
Over Voltage Protection
GENERAL SPECIFICATIONS
Efficiency
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
REMOTE ON/OFF
(See Note 6)
Positive Logic (standard)
Negative Logic (optional)
DC/DC ON
DC/DC OFF
DC/DC ON
DC/DC OFF
Nominal Vin
Nominal Vin
With derating
Asymmetrical load 25%/100% full load
Full load an nominal Vin
Single Output
Dual Output
Single Output
Dual Output
Single Output
Dual Output
-0.2
-0.5
-0.2
-1.0
-0.1
-0.8
-5
-1.0
-10
See Table
See Table
250
+0.2
+0.5
+0.2
+1.0
+0.1
+0.8
+5
+1.0
+10
20
%
%
%
%
%
%
W
Measured with a 1µF/50V MLCC
25% load step change
Nominal Vin and constant resistive
load
µs
30
30
ms
%
%/°C
%
Power Up
Remote On/Off
0
-0.02
+0.02
150
Hiccup, automatic recovery
See Table
See Table
330
% of full load at nominal input
Nominal Vin and full load
Input tot Output
Input to Case
Output tot Case
1600
1000
1000
10
KHz
VDC
GΩ
pF
3000
Open or 3V < Vr < 15V
Short or 0V < Vr < 1.2V
Short or 0V < Vr < 1.2V
Open or 3V < Vr < 15V
+1.0
2.5
+101
+105
+125
95
EN61373, MIL-STD-810F
EN61373, MIL-STD-810F
12
10
1,630,000 hours
295,000 hours
Input Current of Remote Control Pin
Remote Off State Input Current
ENVIRONMENTAL SPECIFICATIONS
Operating Ambient Temperature
(See Note 7)
Maximum Case Temperature
Storage Temperature
Relative Humidity
Thermal Shock
Vibration
Thermal Impedance
(See Note 8)
MTBF
(See Note 1)
PHYSICAL SPECIFICATIONS
Weight
Case Material
Base Material
Potting Material
Dimensions (L x W x H)
Shielding
SAFETY & EMC CHARACTERISTICS
Safety Approvals (pending)
EMI
(See Note 9)
ESD
Radiated Immunity
Fast Transient
(See Note 10)
Surge
(See Note 10)
Conducted Immunity
-0.5
mA
mA
°C
°C
°C
% RH
-40
-55
5
Natural Convection
Natural Convection with Heatsink
BELLCORE TR-NWT-000332
MIL-HDBK-217F
°C/Watt
1.06oz (30g)
Nickel-coated copper
FR4 PCB
Silicon (UL94-V0)
2.00 x 1.00 x 0.40 inches (50.8 x 25.4 x 10.2 mm)
Six-sided
UL60950-1, EN60950-1, IEC60950-1, EN50155
Class B
Class A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
EN55022, EN55011
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
24VDC & 48VDC nominal input models
110VDC nominal input models
Air
±8KV
Contact
±6KV
20 V/m
±2KV
±2KV
10 Vrms
01/13/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 2 of 5
Rev. A
DCREDUW20 Series
Single & Dual Outputs
4:1 Input Voltage Range
20 Watt DC/DC Power Converters
MODEL SELECTION TABLES
SINGLE OUTPUT MODELS
Model Number
DCRED24S3.3UW20
DCRED24S5UW20
DCRED24S12UW20
DCRED24S15UW20
DCRED48S3.3UW20
DCRED48S5UW20
DCRED48S12UW20
DCRED48S15UW20
DCRED110S3.3UW20
DCRED110S5UW20
DCRED110S12UW20
DCRED110S15UW20
110 VDC
(43 – 160 VDC)
48 VDC
(18 – 75 VDC)
24 VDC
(9 – 36 VDC)
Input Voltage
Range
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
Output Current
Min. Load
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
Full Load
4500mA
4000mA
1670mA
1330mA
4500mA
4000mA
1670mA
1330mA
4500mA
4000mA
1670mA
1330mA
Input
(2)
Current
6mA
6mA
6mA
6mA
4mA
4mA
4mA
4mA
3mA
3mA
3mA
3mA
Over Voltage
Protection
3.7 - 5.4 VDC
5.6 - 7.0 VDC
Ripple &
Noise
(3)
75mVp-p
75mVp-p
Output
Power
14.8W
20W
20W
20W
14.8W
20W
20W
20W
14.8W
20W
20W
20W
Efficiency
(3)
85%
88%
89%
88%
85%
88%
89%
89%
85%
87%
88%
89%
Maximum
(4)
Capacitive Load
7000µF
5000µF
850µF
700µF
7000µF
5000µF
850µF
700µF
7000µF
5000µF
850µF
700µF
13.5 - 19.6 VDC 100mVp-p
16.8 - 20.5 VDC 100mVp-p
3.7 - 5.4 VDC
5.6 - 7.0 VDC
75mVp-p
75mVp-p
13.5 - 19.6 VDC 100mVp-p
16.8 - 20.5 VDC 100mVp-p
3.7 - 5.4 VDC
5.6 - 7.0 VDC
75mVp-p
75mVp-p
13.5 - 19.6 VDC 100mVp-p
16.8 - 20.5 VDC 100mVp-p
DUAL OUTPUT MODELS
Model Number
DCRED24D12UW20
DCRED24D15UW20
DCRED48D12UW20
DCRED48D15UW20
DCRED110D12UW20
DCRED110D15UW20
Input Voltage
Range
24 VDC
(9 – 36 VDC)
48 VDC
(18 – 75 VDC)
110 VDC
(43 – 160 VDC)
Output
Voltage
±12 VDC
±15 VDC
±12 VDC
±15 VDC
±12 VDC
±15 VDC
Output Current
Min. Load
0mA
0mA
0mA
0mA
0mA
0mA
No load
(2)
Maximum
(4)
Ripple & Noise
(3)
Output Power Efficiency
(3)
Capacitive Load
Full Load Input Current
±833mA
±667mA
±833mA
±667mA
±833mA
±667mA
6mA
6mA
4mA
4mA
3mA
3mA
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
20W
20W
20W
20W
20W
20W
88%
89%
88%
89%
88%
89%
±500µF
±350µF
±500µF
±350µF
±500µF
±350µF
NOTES
1.
2.
3.
4.
5.
6.
7.
BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40°C.
MIL-HDBK-217F Notice2 @Ta=25°C, Full load (Ground, Benign, controlled environment).
Typical value at nominal input voltage and no load.
Typical value at nominal input voltage and full load.
Test by minimum Vin and constant resistive load.
Trimming allows the user to increase or decrease the output voltage set point of the module. This is accomplished by connecting an external resistor between the TRIM
pin and either the +Vout pin or the –Vout pin.
The ON/OFF control pin voltage is reference to –Vin. Positive Logic comes standard and to order negative logic remote on/off add the suffix “R” to the model number.
Operating Temperature:
These converters can meet the railway T2 and TX temperature requirements.
T2: -40°C to +70°C for all models, TX: -40°C to +85 with power derating to 55% output power. (With heatsink the power derates to 70% output power).
Test conditions with vertical direction by natural convection (20LFM).
Heatsink is optional and P/N: 7G-0020C-F. See “Product Standard Table” on page 5 for ordering information.
EN55022 and EN55011
1) 24Vin and 48Vin Models: To meet Class B the modules do not need an external filter.
2) 110Vin Models: To meet Class A the modules do not need an external filter.
8.
9.
10. An external input filter capacitor is required if the module has to meet EN61000-4-4 and EN61000-4-5.
The filter capacitor suggested for 24Vin and 48Vin models is Nippon chemi-con KY series, 220μF /100V, ESR 48mΩ.
The filter capacitor suggested for 110Vin models is Rubycon BXF series, 100μF /250V.
11. There are several different options available for this series. Please see the “Product Standard Table” on page 4 for all options and ordering information.
CAUTION:
This power converter is not internally fused. An input line fuse must always be used.
01/13/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 3 of 5
Rev. A
DCREDUW20 Series
Single & Dual Outputs
4:1 Input Voltage Range
20 Watt DC/DC Power Converters
DERATING CURVES
DCRED48S5UW20 Derating Curve
DCRED48S5UW20 Derating Curve with Heatsink (Note 8)
CHARACTERISTICS
DCRED48S5UW20 Efficiency vs Input Voltage
DCRED48S5UW20 Efficiency vs Output Load
MECHANICAL DRAWING
Unit: inches (mm)
PIN CONNECTIONS
PIN
1
2
3
4
5
6
SINGLE
+INPUT
-INPUT
+OUTPUT
TRIM
-OUTPUT
CTRL
DUAL
+INPUT
-INPUT
+OUTPUT
COMMON
-OUTPUT
CTRL
4
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed
by using the method shown below.
TRIM UP
5
TRIM DOWN
4
R
U
3
R
D
PRODUCT STANDARD TABLE
Option
Positive Remote ON/OFF (standard)
Negative Remote ON/OFF
Without ON/OFF Pin
Without ON/OFF & Trim Pin
1. Tolerance: x.xx±0.02 (x.x±0.5)
x.xxx±0.01 (x.xx±0.25)
2. Pin Pitch Tolerance: ±0.01 (0.25)
3. Pin Dimension Tolerance: ±0.01 (0.25)
Suffix
No Suffix
R
D
G
F
RF
HS
Positive Remote ON/OFF without Trim Pin
Negative Remote ON/OFF without Trim Pin
Heatsink
01/13/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 4 of 5
Rev. A
DCREDUW20 Series
Single & Dual Outputs
4:1 Input Voltage Range
20 Watt DC/DC Power Converters
COMPANY INFORMATION
Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development
engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008
certification is just one example of our commitment to producing a high quality, well-documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working
closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to
provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss
your future projects.
Contact
Wall Industries
for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
(603)778-2300
(888)587-9255
(603)778-9797
sales@wallindustries.com
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
01/13/2011
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Page 5 of 5
京公网安备 11010802033920号
EEWORLD
