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CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
FEATURES
● Soft Start
● Lead-Free Design
● Output Trim Function
● I/O Isolation 1500VDC
● Remote On/Off Control (Optional)
● Call Factory for More Output Power Options
● EMI Complies with RN55022 Class A (Only for CMCG-A Series)
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMCG Series
SPECIFICATION
INPUT (Vin)
All specifications are based on 25oC, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances
TEST CONDITIONS
Min
Nom
Input Voltage Range
Start Voltage
Under Voltage Shutdown
Over Voltage Shutdown
Input Surge Voltage (1000ms)
Reverse Polarity Input Current
Reflected Ripple Current
Short Circuit Input Power
OUTPUT (Vo)
Output Voltage Range
Output Voltage Accuracy
Output Voltage Trim
Load Regulation (2.5V, 3.3V, and 5Vout)
Load Regulation (12V and 15Vout)
Line Regulation
Output Power
Output Current Range
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Transient Recovery Time
Transient Response Deviation
Maximum Capacitive Load
REMOTE ON/OFF CONTROL
Supply On
Supply Off
Device Standby Input Current
Control Input Current
Control Common
PROTECTION
Over Power Protection
Short Circuit Protection
Over Voltage Protection
GENERAL
Efficiency
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
ENVIRONMENTAL
Operating Temperature
Storage Temperature
Lead Temperature
Humidity
Temperature Coefficient
Cooling
RFI
MTBF
Conducted EMI
PHYSICAL
Weight
Dimensions
24V input models
48V input models
24V input models
48V input models
24V input models
48V input models
24V input models
48V input models
24V input models
48V input models
All models
18
36
17
34
16
32
40
80
-0.7
-0.7
All models
% of nominal output voltage
Io = No Load to 100% Load
Io = 10% to 100% Load
Vin = Min to Max
±9.0
Over Line, Load, and Temperature
25% Load Step Change
25% Load Step Change
200
-1
ON
OFF
Ambient
Case
1.5mm from case for 10 seconds
MIL-HDBK-217F @ 25°C, Ground Benign
24
48
17.5
35
16.5
33
42
82
36
75
18
36
17
34
44
84
50
100
2
See Table
4500
See Table
±0.5
±1.0
±10.0
±11.0
±0.5
±1.0
±0.5
±1.0
±0.1
±0.3
30
See Table
75
100
120
10
500
±2
±5
See Table
Unit
VDC
VDC
VDC
VDC
VDC
A
mW
%
%
%
%
%
W
mVpk-pk
mVpk-pk
mVrms
μs
%
2.5 to 100VDC or Open Circuit
1
VDC
2
5
mA
5
μA
-100
Referenced to Negative Input
110
60 seconds
Flash Tested for 1 second
500VDC
100KHz, 1V
Max
280
1500
1650
1000
160
Continuous
See table
See Table
350
400
1200
-40
-40
-55
1500
5500
%
KHz
VDC
VDC
MΩ
pF
mW
+50
°C
+105
+125
°C
260
°C
95
%
±0.01
±0.02
%/°C
Free air convection
Six-sided shielded metal case
600,000 Hours
EN55022 Class A
Approximately 7oz
4.00(L) x 2.25(W) x 0.81(H) inches
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
OUTPUT VOLTAGE / CURRENT RATING CHART
Model Number
Input Voltage
Output
Voltage
Output Current
Min
Max
Input Current
Reflected
Over Voltage Max Capacitive
Load
No Load Max Load Ripple Current Protection
Eff
(Typ)
CMCG24S2.5-6000
2.5 VDC
0mA
6000mA
50mA
744mA
3 VDC
6800μF
84%
CMCG24S3.3-6000
3.3 VDC
0mA
6000mA
50mA
959mA
3.9 VDC
6800μF
86%
5 VDC
0mA
5000mA
70mA
1185mA
6.8 VDC
6800μF
88%
CMCG24S5-5000
24 VDC
(18 – 36 VDC)
100mA (typ)
5.1 VDC
0mA
5000mA
70mA
1207mA
6.8 VDC
6800μF
88%
CMCG24S12-2500
12 VDC
166mA
2500mA
20mA
1420mA
15 VDC
680μF
88%
CMCG24S15-2000
15 VDC
133mA
2000mA
20mA
1420mA
18 VDC
680μF
88%
CMCG48S2.5-6000
2.5 VDC
0mA
6000mA
40mA
372mA
3 VDC
6800μF
84%
CMCG48S3.3-6000
3.3 VDC
0mA
6000mA
40mA
480mA
3.9 VDC
6800μF
86%
5 VDC
0mA
5000mA
50mA
604mA
6.8 VDC
6800μF
88%
CMCG24S5.1-5000
CMCG48S5-5000
48 VDC
(36 – 75 VDC)
50mA (typ)
5.1 VDC
0mA
5000mA
50mA
604mA
6.8 VDC
6800μF
88%
CMCG48S12-2500
12 VDC
166mA
2500mA
10mA
710mA
15 VDC
680μF
88%
CMCG48S15-2000
15 VDC
133mA
2000mA
10mA
710mA
18 VDC
680μF
88%
CMCG48S5.1-5000
NOTES
1. Transient Recovery Time is measured to within 1% error band for a step change in output load of 75% to 100%.
2. Ripple & Noise measurement bandwidth is 0~20MHz.
3. These power converters require a minimum output loading to maintain specified regulation. Operation at no-load will not damage these
devices, however they may not meet all listed specifications.
4. Other input and output voltages may be available, please contact factory.
5. To order the converter with Remote On/Off function, please add suffix ”-RC” (Ex: CMCG48S5-5000-RC).
6. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.
Due to advances in technology, specifications subject to change without notice.
BLOCK DIAGRAM
INPUT VOLTAGE TRANSIENT RATING
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
MECHANICAL DRAWING
Unit: inches [mm]
TRM
+ Out
-Out
CNTL
-Vin
+ Vin
4.00 [101.6]
MODEL NAME
LABEL
2.25 [57.2]
.17 [4.3]
1.13 [28.6]
3.66 [93.0]
.16 [4.06] 2X
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
.81 [20.6]
Rev. B
CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
DESIGN & FEATURE CONSIDERATIONS
Remote On/Off
Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin and off during a logic low. Negative
logic remote on/off turns the module off during a logic low and on during a logic high. To turn the power module on and off, the user must
supply a switch to control the voltage between the on/off terminal and the -Vin terminal. The switch can be an open collector or equivalent.
A logic low is -0.7V to 1.0V.
A logic high is 2.5V to 100V.
The maximum sink current at the On/Off terminal (Pin 3) during a logic low is 100 mA. The maximum allowable leakage current of a switch
connected to the On/Off terminal (Pin 3) at logic high (2.5V to 100V) is 5uA.
Output Voltage Trim
Output voltage trim allows the user to increase or decrease the output voltage set point of a module.
The output voltage can be adjusted by placing an external resistor (Radj) between the Trim and +Vout or -Vout terminals. By adjusting
Radj, the output voltage can be changed by ±10% of the nominal output voltage.
A 10K, 1 or 10 Turn trimpot is usually specified for continuous trimming. Trim pin may be safely left floating if it is not used.
Connecting the external resistor (Radj (up)) between the Trim and -Vout pins increases the output voltage set point as defined by the following
equation:
Radj( up ) =
(33 ∗ Vout ) − (30 ∗ Vadj)
Vadj − Vout
Connecting the external resistor (Radj (down)) between the Trim and +Vout pins decreases the output voltage set point as defined by the
following equation:
Radj( down ) =
Vout:
Vadj:
Units:
(36.667 ∗ Vadj) − (33 ∗ Vout )
Vout − Vadj
Nominal Output Voltage
Adjusted Output Voltage
VDC/KΩ
Input Source Impedance
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of
the power module.
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
Over Current Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure current
limiting for an unlimited duration. At the point of current-limit inception, the unit shifts from voltage control to current control. The unit
operates normally once the output current is brought back into its specified range.
Output Over Voltage Protection
The output over voltage clamp consists of control circuitry, which is independent of the primary regulation loop that monitors the voltage on
the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage
control that reduces the risk of output over voltage. The OVP level can be found in the “Output Voltage / Current Rating Chart.”
Thermal Considerations
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board spacing. To
avoid exceeding the maximum temperature rating of the components inside the power module, the case temperature must be kept below
105°C. The derating curves are determined from measurements obtained in an experimental apparatus.
Efficiency vs Input Voltage
Efficiency vs Output Load
DERATING CURVE
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev. B
CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Chassis Mount DC/DC Converter
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0Ω at 100 KHz) to simulate source
impedance.
Capacitor Cin offsets possible battery impedance.
Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement Test
Use Cout = 1.0uF ceramic capacitor.
Scope measurement should be made by using a BNC socket, measurement bandwidth is 0-20MHz. Position the load between 50mm and
75mm from the DC/DC Converter.
COMPANY INFORMATION
Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development engineers will
provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2000 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
[email protected]
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797