DATASHEET
Rev C
DCQEB125 SERIES
2:1 Input Voltage Ranges
Industry Standard Quarter-Brick Package
Up to 100 Watts, Single Outputs
DC/DC Power Converters
FEATURES
Up to 125 Watts Output Power
Single Outputs
Output Current up to 35A
Industry Standard Quarter-Brick Package: 2.28” x 1.45” x 0.50”
Under Voltage Lockout
Fixed Switching Frequency
Input to Output Isolation: 1600VDC
APPLICATIONS
Telecom/Datacom
Wireless Networks
Industry Control Systems
Semiconductor Equipment
Distributed Power Architectures
2:1 Wide Input Voltage Range
High Efficiency up to 90%
No Minimum Load Required
Adjustable Output Voltage
Threaded Inserts and Thru-Hole Inserts Available
Short Circuit, Over Voltage, Over Current, and Over Temp. Protection
Compliant to RoHS EU Directive 2002/95/EC
CE Mark Meets 2006/95/CE, 93/68/EEC, and 2004/108/EC
UL60950-1, EN60950-1, and IEC60950-1 Safety Approvals (See Note 12)
OPTIONS
Heatsinks
Pin Lengths
Thru-Hole Inserts
Negative Logic Remote ON/OFF
DESCRIPTION
The DCQEB125 series of DC/DC power converters provides up to 125 Watts of output power in an industry standard 2.28”
x 1.45” x 0.50” quarter-brick package and footprint. This series consists of single output models with 2:1 input voltage
ranges of 18-36VDC or 36-75VDC. Some features include high efficiency up to 90%, adjustable output voltage, remote
sense, and positive or negative remote ON/OFF control. This series is RoHS compliant and has UL60950-1, EN60950-1,
and IEC60950-1 safety approvals (see note 12). Several different options are available for this series including negative
remote ON/OFF control, heatsinks, pin lengths, and thru-hole inserts. Please call factory for more details.
03/13/2012
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 C
DCQEB125 Series
125W, Single Outputs
Quarter-Brick Package
DC/DC Power Converters
SPECIFICATIONS:
DCQEB125 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
Start-up Voltage
Shutdown Voltage
Input Surge Voltage
Input Current
Input Filter
OUTPUT SPECIFICATIONS
Output Voltage
Line Regulation
Load Regulation
Voltage Accuracy
Voltage Adjustability
(See Note 5)
Output Power
Output Current
Minimum Load
Ripple & Noise
Transient Response Recovery Time
Power Up
Start-Up Time
Remote ON/OFF
Remote Sense
(See Note 5)
Temperature Coefficient
PROTECTION
Over Voltage Protection Threshold
Over Current Protection Threshold
Short Circuit Protection
Over Temperature Protection
GENERAL SPECIFICATIONS
Efficiency
Switching Frequency
Input to Output
Isolation Voltage
Input to Base-plate
Output to Base-plate
Isolation Resistance
Isolation Capacitance
REMOTE ON/OFF
(See Note 6)
DC/DC ON
Positive Logic (standard)
DC/DC OFF
DC/DC ON
Negative Logic (optional)
DC/DC OFF
Input Current of Remote Control Pin
Remote Off Input Current
ENVIRONMENTAL SPECIFICATIONS
Operating Base-Plate Temperature
(See Note 7)
Storage Temperature
Relative Humidity
Thermal Shock
Vibration
MTBF
(See Note 1)
PHYSICAL SPECIFICATIONS
Weight
Dimensions (L x W x H)
Case Material
SAFETY & EMC CHARACTERISTICS
Safety Approvals
EMI
(See Note 8)
Radiated Immunity
Fast Transient
(See Note 9)
Surge
(See Note 9)
Conducted Immunity
EN55022
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
TEST CONDITIONS
24VDC nominal input models
48VDC nominal input models
24VDC nominal input models
48VDC nominal input models
24VDC nominal input models
48VDC nominal input models
24VDC nominal input models
48VDC nominal input models
Min
18
36
15
32
Nom
24
48
Max
36
75
18
36
50
100
Unit
VDC
VDC
VDC
VDC
100ms
See Table
L-C Type
See Table
Low line to high line at full load
No load to full load
-0.2
-0.3
-1.5
-20
See Table
See Table
0
+0.2
+0.3
+1.5
+10
%
%
%
%
%
Measured at nominal input and full load with 20MHz BW and
1µF M/C and 10µF T/C capacitors in parallel.
25% load step change
Nominal input and constant resistive load
100
200
25
25
10
-0.02
+0.02
120
140
Hiccup, automatic recovery
+110
See Table
243
1600
1000
1000
10
270
297
mVp-p
µs
ms
ms
% Vo
%/°C
% Vo
% Io
°C
KHz
VDC
VDC
VDC
MΩ
pF
Non-latching Hiccup
110
Nominal input and full load
For 1 minute
For 1 minute
For 1 minute
2500
Open or 3V < Vr < 15V
Short or 0V < Vr < 1.2V
Short or 0V < Vr < 1.2V
Open or 3V < Vr < 15V
1
2.5
Nominal input
Nominal input
-0.5
-40
-55
5
mA
mA
Non-condensing
BELLCORE TR-NWT-000332
MIL-HDBK-217F
+100
°C
+125
°C
95
% RH
MIL-STD-810F
10~55Hz, 2G, 30 minutes along X, Y, and Z
2,500,000
Hours
125,700
Hours
1.46oz (42g)
2.28 x 1.45 x 0.50 inches (57.9 x 36.8 x 12.7 mm)
Aluminum base-plate
UL60950-1, IEC60950-1, EN60950-1
(DCQEB125-48S1.8, 48S2.5, 48S3.3, and 48S05 have approvals; approvals pending for all other models)
Class A
10 V/m
Perf. Criteria A
±2KV
Perf. Criteria B
±1KV
Perf. Criteria B
10 Vrms
Perf. Criteria A
03/13/2012
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 C
DCQEB125 Series
125W, Single Outputs
Quarter-Brick Package
DC/DC Power Converters
MODEL SELECTION TABLE
Model Number
(12)
DCQEB125-24S3.3
DCQEB125-24S05
DCQEB125-24S12
DCQEB125-24S15
DCQEB125-48S1.8
DCQEB125-48S2.5
DCQEB125-48S3.3
DCQEB125-48S05
DCQEB125-48S12
DCQEB125-48S15
48 VDC
(36 - 75 VDC)
24VDC
(18 - 36 VDC)
Input Voltage
Range
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
Output Current
Min. load
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
Full load
30A
25A
10.42A
8.33A
35A
35A
30A
25A
10.42A
8.33A
Ripple & Noise
(4)
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
100mVp-p
Input Current
No Load
(3)
90mA
165mA
50mA
60mA
65mA
50mA
75mA
110mA
40mA
40mA
Full Load
(2)
4970mA
6127mA
6129mA
6125mA
1641mA
2223mA
2455mA
3028mA
3029mA
3027mA
Output Power
99W
125W
125W
125W
63W
87.5W
99W
125W
125W
125W
Efficiency
(4)
87%
89%
89%
89%
84%
86%
88%
90%
90%
90%
NOTES
1. BELLCORE TR-NWT-000332. Case 1: 80% Stress, Temperature at 40°C.
MIL-HDBK-217F Notice2 @Ta=25°C, Full load (Ground, Benign, controlled environment).
2. Maximum value at nominal input voltage and full load.
3. Typical value at nominal input voltage and no load.
4. Typical value at nominal input voltage and full load.
5. Maximum output deviation is +10% inclusive of trim. If remote sense is not being used the +SENSE should be connected to its corresponding
+OUTPUT and likewise the -SENSE should be connected to its corresponding –OUTPUT.
6. The remote ON/OFF control pin voltage is referenced to –INPUT. To order negative logic Remote ON/OFF control add the suffix “R” to the model
number (Ex: DCQEB125-48S05R).
7. Heatsink is optional and P/N: 7G-0029A-F, 7G-0030A-F, 7G-0031A-F, and 7G-0032A-F.
8. The DCQEB125 series meets EN55022 Class A and Class B only with external components added before the input pins to the converter.
9. An external input filter capacitor is required if the module has to meet EN61000-4-4 and EN61000-4-5. We recommend Nippon chemi-con KY series,
220µF/100V, ESR 48mΩ.
10. BASE-PLATE GROUNDING: EMI can be reduced when you connect the four screw bolts to the shield plane.
11. The converter is provided with basic insulation.
12. Safety Approvals: DCQEB125-48S1.8, 48S2.5, 48S3.3, and 48S05 have safety approvals; approvals pending for all other models.
13. This series comes with several different options: Negative remote ON/OFF control, pin lengths, thru-hole inserts, and heatsinks.
CAUTION:
The power module is not internally fused. An input line fuse must always be used.
DERATING
DCQEB125-48S05 Derating Curve
120
0 LFM
100
100 LFM
100
120
0 LFM
100 LFM
200 LFM
80
60
40
20
0
-40
300 LFM
400 LFM
500 LFM
DCQEB125-48S05 Derating Curve
With Heatsink 7G-0029A-F
Output Power (%)
200 LFM
80
60
40
20
0
-40
300 LFM
400 LFM
500 LFM
Output Power (%)
-27
-20
0
20
40
60
80
100
120
-20
-10
0
20
40
60
80
100
120
Ambient Temperature (°C)
Ambient Temperature (°C)
03/13/2012
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 C
DCQEB125 Series
125W, Single Outputs
Quarter-Brick Package
DC/DC Power Converters
CHARACTERISTICS
DCQEB125-48S05 Efficiency vs Input Voltage
92
91
95
90
DCQEB125-48S05 Efficiency vs Output Load
EFFICIENCY(%)
EFFICIENCY(%)
90
89
88
87
86
85
85
80
75
70
65
60
36
40
44
48
52
56
60
64
68
72
75
10
20
30
40
50
60
70
80
90
100
Input Voltage (VDC)
Output Load (% of Full Load)
Recommended Filter for EN55022 Class B Compliance
C10
C1
6.8µF/50V
C6
1.5nF/3KV
C11
0.1µF/50V
L1
622µH
C1
100µF/100V
C6
1.5nF/3KV
C11
0.1µF/50V
L1
620µH
C2
6.8µF/50V
C7
6.8µF/50V
C12
1.0nF/3KV
L2
224µH
C2
1.5µF/100V
C7
47µF/100V
C12
1.0nF/3KV
L2
620µH
C3
6.8µF/50V
C8
6.8µF/50V
C13
1.0nF/3KV
C4
6.8µF/50V
C9
6.8µF/50V
C14
1.0nF/3KV
C5
1.5nF/3KV
C10
0.1µF/50V
C15
1.0nF/3KV
C12
C6
+Vin
C1 C2
C3
L1
L2
C7 C8
C9
+Vin
CASE
C14
DCQEB125-24Sxx
+Vo
C4
-Vin
C5
C13
C15
-Vin
CASE
-Vo
DCQEB125-48Sxx
C3
1.5µF/100V
C8
1.5µF/100V
C13
1.0nF/3KV
C4
1.5µF/100V
C9
1.5µF/100V
C14
1.0nF/3KV
C5
1.5nF/3KV
C10
0.1µF/50V
C15
1.0nF/3KV
C11
CHASSIS GROUND
SHIELD PLANE
Recommended EN55022 Class B Filter Circuit Layout
DCQEB
SERIES
03/13/2012
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 C
DCQEB125 Series
125W, Single Outputs
Quarter-Brick Package
DC/DC Power Converters
MECHANICAL DRAWING
Unit: inches (mm)
2.28 (57.9)
0.21
(5.3)
1.860 (47.24)
0.024 (0.6)
0.300
(7.62)
3
8
7
0.300
(7.62)
2
6
BOTTOM VIEW
0.600 (15.24)
1.030 (26.16)
PIN
1
2
3
4
5
6
7
8
PIN CONNECTIONS
FUNCTION
PIN Ø
-INPUT
Ø.040 (1.02)
CTRL
Ø.040 (1.02)
+INPUT
Ø.040 (1.02)
-OUTPUT
Ø.060 (1.52)
-SENSE
Ø.040 (1.02)
TRIM
Ø.060 (1.52)
+SENSE
Ø.040 (1.02)
+OUTPUT
Ø.060 (1.52)
0.43 (10.9)
1
4
0.150 (3.81)
0.450 (11.43)
0.300
(7.62)
1.45 (36.8)
5
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)
0.14
(3.6)
2.000 (50.80)
0.20
(5.1)
Threaded (Standard) 4-M3X0.5
Thru-Hole (Option) 4-Ø0.126 (Ø3.2)
3. Pin Dimension Tolerance: ±0.004 (±0.1)
0.50 (12.7)
PRODUCT OPTIONS
SUFFIX
0.200” pin length
none
Positive remote ON/OFF logic
0.145” pin length
S
0.200” pin length
R
Negative remote ON/OFF logic
0.145” pin length
RL
Ø0.126 (Ø3.2) thru-hole
(1)
Thru-Hole Inserts
TH
(no thread) inserts
NOTES
1. Models with thru-hole inserts cannot be equipped with a heatsink.
PRODUCT OPTIONS
7G-0029A-F
7G-0030A-F
Heatsinks
7G-0031A-F
7G-0032A-F
SUFFIX
H
H1
H2
H3
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed by
using the method shown below.
TRIM UP
TRIM DOWN
7
R
U
6
R
D
6
5
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
Page 5 of 5
03/13/2012
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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