30 Watt MH/MHW Single Series DC/DC Converters
Features
Up to 30 Watts of Output Power
4:1 and 2:1 Input Range
Rated to 100°C Case Operating Temperature
24 & 48 Volt Nominal Inputs,
5, 12, 15, and 24 Volt Outputs
Five Year Warranty
Water Washable Design
Positive or Negative Logic
Six Sided Shielding
Output Overvoltage Protection
Description
The Calex MH series are 30 Watt DC/DC converters in a 1.6"
x 2" case with a 2:1 and 4:1 input ratio. The input voltage range
is 18 to 36 or 9 to 36 VDC for 24 Volt models and 36 to 75 or
18 to 75 for 48 Volt models.
The units are filled with a compound which allows them to
withstand a normal water wash after being soldered to a PC
board.
Model
24S5.6000MH
24S5.6000MHW
24S12.2500MH
24S12.2500MHW
Units
1544
500
VD C
pF
Selection Chart
Input Range
VD C
Min
18
9
18
9
18
9
18
9
36
18
36
18
36
18
36
18
Max
36
36
36
36
36
36
36
36
75
75
75
75
75
75
75
75
Output
VD C
5
5
12
12
15
15
24
24
5
5
12
12
15
15
24
24
Output
mA
6000
6000
2500
2500
2000
2000
1250
1250
6000
6000
2500
2500
2000
2000
1250
1250
General Specifications
All Models
Isolation
Isolation Voltage
Input to Output
Capacitance
ON/OFF Function
Positive Logic
HIGH/OPEN - Module ON
LOW - Module OFF
Negative Logic
HIGH/OPEN - Module OFF
LOW - Module ON
Output Voltage Trim
Trim Range
Environmental
Case Operating Range
(see Derating Curve)
Storage Range
Thermal Impedance (6)
General
Unit Weight
Chassis Mounting Kit
MTBF
Agency Approvals
Output Over voltage Protection
(OVP) Threshhold
MIN
OVP Type - Non-latching
MAX
Open Loop Over voltage
Clamp
TYP
1.1
MS8
> 1 M Hours
UL / IEC60950
CSA 22.2 No. 950
CE MARKED
115
135
oz
MIN
MAX
MIN
MAX
TYP
-40
100
-55
125
10
°C
°C
°C/Watt
MIN
TYP
24S15.2000MH
24S15.2000MHW
24S24.1250MH
24S24.1250MHW
48S5.6000MH
48S5.6000MHW
48S12.2500MH
48S12.2500MHW
48S15.2000MH
48S15.2000MHW
48S24.1250MH
Open or >3 VDC
Pulled Low < 0.8 V
Open or >3 VDC
Pulled Low < 0.8 V
MIN
MAX
-10
+10
%
48S24.1250MHW
A
De fault ON/OFF lo g ic is p o sitive . De fault case co nne cte d to -Vin.
OPTIONS:
Ad d
(-N)
to the mo d e l numb e r to o rd e r ne g ative ON/OFF lo g ic. (ie . 24S5.6000MH-N,
24S5.6000MHW-N)
Ad d
(-O)
to the mo d e l numb e r to o rd e r case co nne cte d to -Vo ut. (ie . 24S5.6000MH-O,
24S5.6000MHW-O)
Ad d
(-NO)
to the mo d e l numb e r to o rd e r ne g ative ON/OFF lo g ic and case co nne cte d
to -Vo ut. (ie . 24S5.600MH-NO, 4S5.600MHW-NO)
%
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
1
eco# 051101-1,060206-7,060403-1
30 Watt MH/MHW Single Series DC/DC Converters
Electrical Characteristics
Unless otherwise specified, all parameters are full load, nominal line, T
A
=25°C, and thermal steady state.
Input Parameters (1)
Model
Voltage Range
Input Current , No Load
Full Load
Efficiency
Vin=24VDC, Full Load
Switching Frequency
Maximum Input Overvoltage,
100ms
Recommended Fuse
Model
Voltage Range
Input Current , No Load
Full Load
Efficiency
Vin=24VDC, Full Load
Switching Frequency
Maximum Input Overvoltage,
100ms
Recommended Fuse
MIN
MAX
TYP
TYP
TYP
TYP
MAX
MIN
MAX
TYP
TYP
TYP
TYP
MAX
24S5.6000MH
18
36
0.012
1.44
85
24S5.6000MHW
9
36
0.012
1.49
82
400
40
(2)
24S15.2000MH
18
36
0.012
1.40
89
24S15.2000MHW
9
36
0.012
1.45
86
400
40
(2)
24S24.1250MH
18
36
0.012
1.40
89
24S24.1250MHW
9
36
0.012
1.45
86
24S12.2500MH
18
36
0.012
1.40
89
24S12.2500MHW
9
36
0.012
1.45
86
Units
VD C
AD C
%
kHz
VD C
AMPS
Units
VD C
AD C
%
kHz
VD C
AMPS
Input Parameters (1)
Model
Voltage Range
Input Current , No Load
Full Load
Efficiency
Vin=48VDC, Full Load
Switching Frequency
Maximum Input Overvoltage,
100ms
Recommended Fuse
Model
Voltage Range
Input Current , No Load
Full Load
Efficiency
Vin=48VDC, Full Load
Switching Frequency
Maximum Input Overvoltage,
100ms
Recommended Fuse
MIN
MAX
TYP
TYP
TYP
TYP
MAX
MIN
MAX
TYP
TYP
TYP
TYP
MAX
48S5.6000MH
36
75
12
718
85
48S5.6000MHW
18
75
12
744
82
400
80
(2)
48S15.2000MH
36
75
12
702
89
48S15.2000MHW
18
75
12
727
86
400
80
(2)
48S24.1250MH
36
75
12
702
89
4
A
8S24.1250MHW
18
75
12
727
86
48S12.2500MH
36
75
12
702
89
48S12.2500MHW
18
75
12
727
86
Units
VD C
mADC
%
kHz
VD C
AMPS
Units
VD C
mADC
%
kHz
VD C
AMPS
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
2
eco# 051101-1,060206-7,060403-1
30 Watt MH/MHW Single Series DC/DC Converters
Output Parameters (1)
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range (3)
Load Regulation
1/4 FL - FL
Line Regulation
Vin = Min-Max VDC
Load Transient
Recovery Time (1)
error band = ±1%
Load Transient Overshoot
Noise (4)
bw = 0 - 20 MHz
Short Circuit Protection,
Output to Common
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range (3)
Load Regulation
1/4 FL - FL
Line Regulation
Vin = Min-Max VDC
Load Transient
Recovery Time (1)
error band = ±1%
Load Transient Overshoot
Noise (4)
bw = 0 - 20 MHz
Short Circuit Protection,
Output to Common
MIN
TYP
MAX
MIN
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
MIN
TYP
MAX
MIN
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
24S5.6000MH
5
4.95
5.00
5.05
0.60
6.00
24S5.6000MHW
5
4.95
5.00
5.05
0.60
6.00
0.1
1
0.02
0.1
500
150
50
Continuous
24S12.2500MH
12
11.88
12.00
12.12
0.25
2.50
24S12.2500MHW
12
11.88
12.00
12.12
0.25
2.50
Units
VDC
VDC
ADC
%
%
µs
mV
peak
mV P-P
24S15.2000MH
15
14.85
15.00
15.15
0.20
2.00
24S15.2000MHW
15
14.85
15.00
15.15
0.20
2.00
0.1
1
0.02
0.1
500
300
50
24S24.1250MH
24
23.76
24.00
24.24
.125
1.25
24S24.1250MHW
24
23.76
24.00
24.24
.125
1.25
Units
VDC
VDC
ADC
%
%
µs
mV
peak
mV P-P
Continuous
35
30
25
20
15
10
5
0
-40
OUTPUT DERATING
Proper Application Of The Trim Pin
The trim pin is used to adjust the output voltage slightly to
compensate for voltage drops in the system’s wiring. Figure
4 shows the proper application of the trim pin. Either a 10K
trimpot or fixed resistors may be used.
Other applications for the TRIM function can be found in the
CALEX application note, “Applying the Remote Sense and
Trim Functions on DC/DC Converters.”
Use one resistor for either trim up or trim down. The values
can range from infinity to zero ohms with zero ohms providing
the most trim.
A
OUTPUT POWER (WATTS)
1
2
3
4
40
50
60
70
80
90
100
120
AMBIENT TEMPERATURE (°C)
+ OUT 4
TRIM 6
CMN 5
USING TRIMPOT
10K LOAD
+ OUT 4
TRIM 6
CMN 5
1 = MHW 5 Vout
2 = MH 5 Vout
3 = MHW 12, 15, 24 Vout
4 = MH 12, 15, 24 Vout
TRIM
DOWN
LOAD
TRIM
UP
Output trim methods
USING FIXED RESISTORS
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
3
eco# 051101-1,060206-7,060403-1
30 Watt MH/MHW Single Series DC/DC Converters
Output Parameters (1)
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range (3)
Load Regulation
1/4 FL - FL
Line Regulation
Vin = Min-Max VDC
Load Transient
Recovery Time (5)
error band = ±1%
Load Transient Overshoot
Noise (4)
bw = 0 - 20 MHz
Short Circuit Protection,
Output to Common
MIN
TYP
MAX
MIN
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
48S5.6000MH
5
4.95
5.00
5.05
0.60
6.00
48S5.6000MHW
5
4.95
5.00
5.05
0.60
6.00
0.1
1
0.02
0.1
500
150
50
Continuous
48S12.2500MH
12
11.88
12.00
12.12
0.25
2.50
48S12.2500MHW
12
11.88
12.00
12.12
0.25
2.50
Units
VDC
VDC
ADC
%
%
µs
mV peak
mV P-P
Model
Output Voltage
Output Voltage Accuracy
Rated Load Range (3)
Load Regulation
1/4 FL - FL
Line Regulation
Vin = Min-Max VDC
Load Transient
Recovery Time (5)
error band = ±1%
Load Transient Overshoot
Noise (4)
bw = 0 - 20 MHz
Short Circuit Protection,
Output to Common
MIN
TYP
MAX
MIN
MAX
TYP
MAX
TYP
MAX
TYP
TYP
TYP
48S15.2000MH
15
14.85
15.00
15.15
0.20
2.00
48S15.2000MHW
15
14.85
15.00
15.15
0.20
2.00
0.1
1
0.02
0.1
500
300
50
48S24.1250MH
24
23.76
24.00
24.24
.125
1.25
48S24.1250MHW
24
23.76
24.00
24.24
.125
1.25
Units
VDC
VDC
ADC
%
%
µs
mV peak
mV P-P
Continuous
NOTES:
(1)
(2)
Refer to the CALEX Application Notes for the definition of terms,
measurement circuits, and other information.
See CALEX Application Notes to determine the correct fuse. A
fuse is required only for system protection, but must be used for
reverse voltage protection of the input.
Below the minimum rated load, the output may exhibit noise
performance degradation. Operation with less than the minimum
rated load will not damage unit, and DC regulation is not
significantly affected.
Noise is measured per CALEX Application Notes. Output noise
is measured with a 10 µF tantalum capacitor and a 0.01µF
ceramic capacitor connected across the output pins.
Load Transient Overshoot is the output voltage peak amplitude
referenced to the final value due to a step load change of 50-75%
occuring only on the measured output. “Load Transient
Overshoot” and “Dynamic Response” are the same specification.
Load Transient Recovery Time is the time for the output to return
to within the specified voltage error band centered about the final
value. “Load Transient Recovery Time” and “Transient Response”
are the same specification.
The case thermal impedance is specified as the case temperature
rise over ambient per package watt dissipated.
Specifications subject to change without notice.
(8)
Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
A
1.31
4
5
6
0.700
0.300
0.000
0.100
0.040 Ø PINS
(3)
0.600
0.400
0.000
0.31
3
2
1
(4)
(5)
1.800
1.91
0.25 TYP
0.000
0.11
0.000
BOTTOM VIEW
Mechanical tolerances
unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
Pin
1
2
3
4
5
6
SIDE VIEW
Function
ON/OFF
-INPUT
+INPUT
+OUTPUT
-OUTPUT
TRIM
(6)
(7)
2401 Stanwell Drive • Concord, California 94520 • Ph: 925/687-4411 or 800/542-3355 • Fax: 925/687-3333 • www.calex.com • Email: sales@calex.com
4
eco# 051101-1,060206-7,060403-1
0.415
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