CMLV12S15-150 - Wall Industries

TECHNICAL DATASHEET
Rev. B
CMLV12S15-150
Low Voltage DC-DC Chassis Mount Converter
10-36 Vdc Input
15Vdc Output at 10A
Half-Brick Package
Features:
Applications:

Up to 88% Efficient

Cost Efficient Solution

Delivering 10A at Room Temperature with No
Added Heat Sink with 400LFM

Fixed Switching Frequency

High Reliability

Output Short Circuit Protection

Output Over Current Protection

Encapsulated for Added Ruggedness

For use in 12V and 24V battery applications

Remote ON/OFF

For use in Intermediate and Distributed Bus
Architectures (IBA)

Remote Sense Compensation to 10% Vout

Telecommunication equipment

Fast Transient Response

Network (LANs/WANs) Equipment

100% Burn In

Next generation low voltage, high current
microprocessors and Ics

Soft Start
Description:
The CMLV12S15-150 is a high density, low input voltage, isolated converter on a chassis mount
with a wide input voltage range. Low input voltage converters are uncommon in the industry and
the CMLV12S15-150 offers the flexibility of operation with both 12V and 24V busses. This state-ofthe-art converter’s features include fast transient response, short circuit protection, over current
protection, soft start, and many other features that are required for today’s demanding applications.
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1 of 12
TECHNICAL DATASHEET
Rev. B
Technical Specifications
CMLV12S15-150
Model No. CMLV12S15-150
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
Related condition
Min
Nom
Max
Switching Frequency
400
INPUT (Vin)
Operating Voltage Range
10
12 / 24
36
UVLO Turn On at
9.4
9.5
9.6
UVLO Turn Off at
9.3
9.4
9.5
Maximum Input Current
Low Line
17.6
No Load Input Current
No Load
0.15
Input Current under “Remote Off”
0.0064
Reflected Ripple Current
225
Input Surge Voltage
100 mS
50
85
EFFICIENCY
OUTPUT (Vo)
14.85
15.15
Voltage Set Point
±RS shorted to ±Vo
15.0
-1%
+1%
13.5
16.5
Voltage Adjustment
Max Output limited to 150W
15.0
-10%
+10%
Load Regulation
±RS shorted to ±Vo
0.1
0.2
Line Regulation
±RS shorted to ±Vo
0.1
0.2
Temperature Drift
0.2
16.5
Remote Sense Compensation
Max Output limited to 150W
10%
Ripple
1µF Ceramic &10µF Tantalum
150
Spikes
1µF Ceramic &10µF Tantalum
Current
0
10
Power Limited-Dependent upon SENSE
Current Limit
13
compensation and TRIM adjustment
Over Voltage Limit
Output Clamped
1µF Ceramic & 10µF Tantalum
DYNAMIC RESPONSE
50% to 100% Io, di/dt=1A/µS
200
Load step /  V
Recovery Time
Recovery to within 1% Nominal Vo
Turn On Delay
From Vin (min) to Vout (nom)
Turn On Overshoot
Full Load Resistive
0
Hold Up Time
From Vin (min) to VULVO_Turn_Off
0
REMOTE ON/OFF
Active High
Remote ON – Active High
Min High (ON/OFF pin)
2.2
Remote ON – Active Low
Max Low (ON/OFF pin)
N/A
Remote OFF – Active High
Max Low (ON/OFF pin)
1.2
Remote OFF – Active Low
Min High (ON/OFF pin)
N/A
Remote ON/OFF pin Floating – Active High
Over Operating Voltage Range
2.5
5.0
Remote ON/OFF pin Floating – Active Low
Over Operating Voltage Range
N/A
ION/OFF Sink to pull low – Active Low or High
VON/OFF =0V, Vin=36V
0.38
ION/OFF Source to drive high – Active High
VON/OFF =5V, Vin=36V
0.03
ION/OFF Source to drive high – Active Low
VON/OFF =5V, Vin=36V
Turn On Delay – Active High
ON/OFF (max Low) to Vout (min)
9
Turn Off Delay – Active High
ON/OFF (0V) to Vout (min)
160
ISOLATION
Input-Output
1 minute
1500
Input-Case
1 minute
500
Output-Case
1 minute
500
THERMAL
Ambient
Max. Ambient limited by OTP
-40
25
OTP
Over Temperature Protection (OTP)
Case Temperature Greater than
95
Turn On (OTP)
Case Temperature Less than
85
Calculated Using Bellcore TR-332 Method 1 case 3
2,563,116
MTBF
MECHANICAL
See Figure 1
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Unit
kHz
Vdc
Vdc
Vdc
A
A
A
mA
Vdc
%
Vdc
%
Vdc
%
%
% / °C
Vdc
%
mVpk-pk
mVpk-pk
A
A
Vdc
mV
ms
ms
%
mS
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
mA
mA
mA
ms
µS
Vdc
Vdc
Vdc
°C
°C
°C
hours
Page 2 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Figure 1: Mechanical Dimensions
Unit inches [mm]
NOTES:
TO ORDER:
1. PIN TO PIN TOLERANCE ± 0.01 [±0.3], PIN DIAMETER
TOLERANCE: ±0.005 [±0.13].
2. CASE MATERIAL OF THE CONVERTER: Ø.040 [1.02] THICK,
ALUMINUM ALLOY 3003-0, PER: QQA 250/2.
3. UNLESS OTHERWISE SPECIFIED.
4. UNIT COMES WITH EITHER 3M x 0.5 THREADED THRU
INSERTS OR FOR Ø.125 THRU-HOLE FOR THE CHASSIS
MOUNT BOARD ADD: “TH” SUFFIX TO MODEL PART
NUMBER. EXAMPLE: CMLV12S15-150TH
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Page 3 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
DESIGN CONSIDERATIONS
Under Voltage Lock Out (UVLO)
The converter output is disabled until the input voltage exceeds the UVLO turn-on limit. The converter will
remain ON until the input voltage falls below the UVLO turn-off limit.
Over Current Protection
The converter is protected from short circuit and over current conditions. During these fault conditions, the
converter output will ‘hiccup’. The converter output will recover once the short or over current fault is removed.
Over Temperature Protection (OTP)
The converter has internal thermal protection that will shut the converter OFF once the case temperature exceeds
the OTP turn-off limit. The converter will resume operation when the case temperature has dropped below the
OTP turn-on limit.
Output Filter
No additional output capacitor is needed for the power supply to operate. However, to reduce the ripple and noise
on the output, additional capacitance may be added. A 100µF Ceramic capacitor may be added across the +Vo and
–Vo pins to reduce the ripple and spike noise. Additional capacitance in the form of a tantalum or aluminum
electrolytic may also be placed across these pins in order reduce ripple and improve the transient peak-to-peak
voltage deviation.
Remote Sense
To improve the regulation at the load, route the connections from the -RS and the +RS pins to the –Vo and +Vo
connections at the load. This will force the converter to regulate the voltage at the load and not at the pins of the
converter (refer to Graph 8). If it is not desired to use the Remote Sense feature, the –RS and +RS pins may be left
open or they may be shorted to the -Vo and +Vo pins respectively. Shorting the RS pins to the Vo pins will reduce
the voltage drops through the converter pins.
Remote ON/OFF
The converter has the ability to be remotely turned ON or OFF. The CMLV series is Active-High. Active-High
means that a logic high at the ON/OFF pin will enable the supply (Figure 2). With Active-High, if the ON/OFF
pin is left floating, the supply will be enabled.
Figure 2: Active-High
CMLV Series Converter
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Page 4 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Output Voltage Trim: (5V, 12V, 15V, and 20V Models)
The output is adjustable ±10% of rated output voltage. To trim the output voltage down, place the trim resistor
between the Trim and -Rs pins (Figure 4). To trim the output voltage up, place the trim resistor between the Trim
and +Rs pins (Figure 3).
The value of the trim resistor with respect to the desired output voltage (Vo) can be derived from the following
formulas, or looked up on the trim table (Table 2).
Vonom
U 1  R1  Vo  R lim
RTH 
Vo  Vonom
Vo  Vonom
R1  Vo 
RTL 
R1  Vo
 R lim
Vonom  Vo
Figure 3: Trim Up
(in Kohms)
(in Kohms)
Figure 4: Trim Down
+Vout
+Vout
+Rs
+Rs
RTH
Pins Facing Down
Trim
Rload
Pins Facing Down
Rload
Trim
RTL
-Rs
-Rs
-Vout
-Vout
Table 2: Trim Equations for CMLV Series (5V, 12V, 15V, and 20V Models)
Vonom
15.000
U1
2.500
Percent
Trim
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
Trim Low
Vo
RTL
14.850 500.78
14.700 245.28
14.550 160.11
14.400 117.53
14.250 91.98
14.100 74.95
13.950 62.78
13.800 53.66
13.650 46.56
13.500 40.88
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R1
5.11
Rlim RTH to +Rs
5.11 RTL to -Rs
Trim High
Vo
RTH
15.150 2575.44 All in Kohms
15.300 1297.94
15.450 872.11
15.600 659.19
15.750 531.44
15.900 446.27
16.050 385.44
16.200 339.81
16.350 304.33
16.500 275.94
Note that while decreasing the output voltage, the
maximum output current still remains at 10A, and
while increasing the output voltage, the output
current is reduced to maintain a total output
power at 150 W.
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Page 5 of 12
TECHNICAL DATASHEET
Rev. B
CMLV12S15-150
Paralleling Converters
The CMLV series converters may be paralleled both for redundancy and for higher output current. However, in
order to do this, a high-current, low Vf, schottky diode must be placed at the +Vo pin of each supply as shown in
Figure 5. To improve sharing, tie the two TRIM pins together. The converters may be trimmed by adding a
resistor value from Table 2 from each TRIM pin to ±RS pin, or alternatively, a single resistor of half the value of
Table 2 from the common TRIM pins to the common ±RS pins.
Figure 5: Paralleling Converters
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TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Graph 1: CMLV12S15-150 Efficiency vs. Output Current
90%
89%
88%
87%
86%
85%
84%
Efficiency (%)
83%
82%
81%
80%
Vin=10V
79%
Vin=12V
78%
Vin=24V
77%
Vin=30V
76%
75%
74%
73%
72%
71%
70%
0
2
4
6
8
10
Io (A)
Graph 2: CMLV12S15-150 Max Ambient vs. Io (Vin=12V)
12
11
10
9
8
Io (A)
7
6
5
4
No Airflow
3
w ith 400lfm Air
2
1
0
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
Ambient (°C)
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TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Graph 4: CMLV12S15-150 Power Dissipation vs. Input Voltage
38
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Io=0A
Io=1A
Io=2A
Io=4A
Io=6A
Io=8A
Io=10A
Io=1A
Io=6A
35
Io=4A
Io=10A
29
26
23
20
17
14
11
8
5
2
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Vin(V)
Graph 5: CMLV12S15-150 Min Load Input Current and
Power Dissipation vs. Input Voltage
2.500
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Vin(V)
Graph 6: CMLV12S15-150 "Remote Off" Input Current and
Power Dissipation vs. Input Voltage
5.9
0.016
0.500
Input Current
Input Current
0.015
2.000
5.3
0.014
0.410
1.750
5.0
0.013
0.365
1.500
4.7
0.012
0.320
1.250
4.4
0.011
0.275
1.000
4.1
0.010
0.230
0.750
3.8
0.009
0.185
0.500
3.5
0.008
0.140
0.250
3.2
0.007
0.095
2.9
0.006
10
12
24
30
0.050
10
Vin(V)
0.455
Power Dissipation
Pdissipation (W)
0.000
Pdissipation (W)
5.6
Power Dissipation
Iin (A)
2.250
Iin (A)
Io=2A
Io=8A
32
Pdissipation (W)
Iin (A)
Graph 3: CMLV12S15-150 Input Current vs. Input Voltage
12
24
30
Vin(V)
Note: Voltage measurements taken where the output pins are
soldered into test board.
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TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Graph 8: CMLV12S15-150 Load Regulation
(+RS to +Vo, -RS to -Vo)
0.23%
0.22%
0.21%
0.20%
0.19%
0.18%
0.17%
0.16%
0.15%
0.14%
0.13%
0.12%
0.11%
0.10%
0.09%
0.08%
0.07%
0.06%
0.05%
0.04%
0.03%
0.02%
0.01%
0.00%
Vin=10V
Vin=12V
Vin=24V
Vin=30V
Regulation (%)
Regulation (%)
Graph 7: CMLV12S15-150 Load Regulation (±RS Pins Open)
1
2
4
6
8
0.23%
0.22%
0.21%
0.20%
0.19%
0.18%
0.17%
0.16%
0.15%
0.14%
0.13%
0.12%
0.11%
0.10%
0.09%
0.08%
0.07%
0.06%
0.05%
0.04%
0.03%
0.02%
0.01%
0.00%
Vin=10V
Vin=12V
Vin=24V
Vin=30V
1
10
2
4
Io (A)
Io=1A
Io=2A
Io=4A
Io=6A
Io=8A
Io=10A
10
12
8
10
Graph 10: CMLV12S15-150 Line Regulation (±RS Pins Open)
Regulation (%)
Regulation (%)
Graph 9: CMLV12S15-150 Line Regulation
(+RS to +Vo, -RS to -Vo)
0.20%
0.19%
0.18%
0.17%
0.16%
0.15%
0.14%
0.13%
0.12%
0.11%
0.10%
0.09%
0.08%
0.07%
0.06%
0.05%
0.04%
0.03%
0.02%
0.01%
0.00%
6
Io (A)
24
0.20%
0.19%
0.18%
0.17%
0.16%
0.15%
0.14%
0.13%
0.12%
0.11%
0.10%
0.09%
0.08%
0.07%
0.06%
0.05%
0.04%
0.03%
0.02%
0.01%
0.00%
30
Io=1A
Io=2A
Io=4A
Io=6A
Io=8A
Io=10A
10
12
24
30
Vin (V)
Vin (V)
Note: Voltage measurements taken where the output pins are
soldered into test board.
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Page 9 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
TEST SETUP:
The CMLV12S15-150 specifications are tested with the following configurations:
Regulation and Efficiency Setup
To ensure that accurate measurement are taken, the voltage measurements are taken directly at the terminal of the
module. This minimizes errors due to contact and trace lengths between the load and the output of the supply. The
following is a diagram of the test setup.
Figure 6: Regulation and Efficiency Probe Setup
Rtrace
Rcontact +Vin
+Vout Rcontact
Vin
Rtrace
Rload
Vout
Rcontact
Rtrace
Rcontact
Rtrace
-Vout
-Vin
Output Ripple Voltage Setup
The module is tested with a 1µF ceramic capacitor in parallel with a 10µF tantalum capacitor across the output
terminals.
Figure 7: Ripple Voltage Probe Setup
SCOPE
PROBE
+Vout
CMLV12S15-150
1F
10F
Ceramic
Rload
Tantalum
-Vout
Input Reflected Ripple Current and Input Ripple Current Setup
The module is tested for input reflected ripple current (Irrc) and input ripple current (Irc). The input ripple voltage
is also measured at the pins with the following input filter. If there is a need to reduce input ripple current/voltage
then additional ceramic capacitors can be added to the input of the converter.
Figure 8: Ripple Current Setup
Irrc
SCOPE
PROBE
Irc
12 H
+Vin
Low
Impedance
Source
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6,800F
1F
electrolytic
capacitor
ceramic
capacitor
CMLV12S15-150
-Vin
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Page 10 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Converter Thermal Consideration
The converter is designed to operate without convective cooling if the derating curves are followed. The converter
can operate at higher temperatures if airflow is applied. Airflow should be aligned lengthwise to the converter for
optimum heat transfer. Contact Factory for derating curves.
Figure 9: Airflow Orientation
+Vin
ON/OFF
Pins Facing Down
CMLV12S15-150
-Vin
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+Vout
-Vout
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Page 11 of 12
TECHNICAL DATASHEET
CMLV12S15-150
Rev. B
Ordering Information
Part Number Example:
CMLV
Series
Designation
12
S
15 – 150
TH
Nominal
Input Voltage
Single Output
Nominal
Output Voltage
Maximum
Output Power
Options
Blank
TH
Threaded Hole
Through Hole
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:
(888) 597-WALL
(603)778-2300
(888)587-9255
(603)778-9797
sales@wallindustries.com
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
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Page 12 of 12