MKW2500 Series
15W, Wide Input Range, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 86%
1500VDC Isolation
MTBF > 700,000 Hours
2:1 Wide Input Range
CSA1950 Safety Approval
Complies with EN55022 Class A
Six-Sided Shielding
Remote On/Off Control
UL 94V-0 Package Material
Internal SMD Construction
Minmax's MKW2500 series, comprising 21 different models, has
been conceived as an application specific range of DC/DC converters,
specially addressing data communication equipments, mobile battery
driven equipments, distributed power systems, telecommunication
equipments, mixed analog/digital subsystems, process/machine control
equipments, computer peripheral systems and industrial robot systems.
Packing up to 15W of power into a 2x1x0.4 inch package, with
efficiency as high as 86%, the MKW2500 has wide input ranges of
9-18VDC, 18-36VDC and 36-75VDC which is available in output
voltages of 3.3V, 5V, 5.1V, 12V, 15V, {12V and {15VDC.
Other feathers include continuous short circuit protection, remote
on/off, six-sided shielded case and EN55022 Class A conducted noise
compliance minimize design-in time, cost and eliminate the need for
external filtering.
I/O Isolation
Wide Range
2:1
High
Power
Density
More Power
1500
VDC
EMI
EN55022
Remote on/off
Block Diagram
Single Output
Dual Output
+Vin
LC
Filter
+Vo
+Vin
LC
Filter
+Vo
Com.
-Vo
PWM
Isolation
Ref.Amp
PWM
Isolation
Ref.Amp
-Vo
-Vin
-Vin
1
MINMAX
REV:0 2005/04
MKW2500 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Reflected
Ripple
Current
mA (Typ.)
Efficiency
VDC
MKW2521
MKW2522
MKW2523
MKW2524
MKW2526
MKW2527
MKW2529
MKW2531
MKW2532
MKW2533
MKW2534
MKW2536
MKW2537
MKW2539
MKW2541
MKW2542
MKW2543
MKW2544
MKW2546
MKW2547
MKW2549
12
( 9 ~ 18 )
24
( 18 ~ 36 )
48
( 36 ~ 75 )
VDC
3.3
5
12
15
{12
{15
5.1
3.3
5
12
15
{12
{15
5.1
3.3
5
12
15
{12
{15
5.1
Max.
mA
3000
3000
1250
1000
{625
{500
3000
3000
3000
1250
1000
{625
{500
3000
3000
3000
1250
1000
{625
{500
3000
Min.
mA
300
300
125
100
{62.5
{50
300
300
300
125
100
{62.5
{50
300
300
300
125
100
{62.5
{50
300
@Max. Load @No Load
mA (Typ.) mA (Typ.)
1057
1524
1452
1452
1452
1452
1574
528
762
726
726
726
726
787
264
381
363
363
363
363
393
30
50
20
40
10
30
@Max. Load
% (Typ.)
78
82
86
86
86
86
81
78
82
86
86
86
86
81
78
82
86
86
86
86
81
Absolute Maximum Ratings
Parameter
12VDC Input Models
Input Surge Voltage
24VDC Input Models
( 1000 mS )
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
-0.7
---
---
Max.
25
50
100
260
5,000
Unit
VDC
VDC
VDC
]
mW
Notes :
1. Specifications typical at Ta=+25], resistive load,
nominal input voltage, rated output current unless
otherwise noted.
2. Transient recovery time is measured to within 1%
error band for a step change in output load of 75%
to 100%.
3. Ripple & Noise measurement bandwidth is 0-20
MHz.
4. These power converters require a minimum output
loading to maintain specified regulation.
5. Operation under no-load conditions will not damage
these modules; however, they may not meet all
specifications listed.
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
RFI
Conducted EMI
Conditions
Ambient
Case
Min.
Max.
-40
+60
-40
+100
-50
+125
---
95
Free-Air Convection
Six-Sided Shielded, Metal Case
EN55022 Class A
Unit
]
]
]
%
6. All DC/DC converters should be externally fused at
the front end for protection.
7. Other input and output voltage may be available,
please contact factory.
8. To order the converter with Remote On/Off function,
please add a suffix -RC (e.g. MKW2521-RC).
9. To order the converter with EN55022 Class A
function, please add a suffix A (e.g. MKW2521A).
10. Specifications subject to change without notice.
REV:0 2005/04
MINMAX
2
MKW2500 Series
Input Specifications
Parameter
Start Voltage
Model
12V Input Models
24V Input Models
48V Input Models
Under Voltage Shutdown
12V Input Models
24V Input Models
48V Input Models
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
All Models
Min.
8
15
30
7
13
25
---
---
Typ.
8.5
17
33
8
15
29
---
---
Pi Filter
Max.
9
18
36
8.5
17
34
1
3500
A
mW
VDC
Unit
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Power Protection
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
25% Load Step Change
Over Line, Load & Temp
Dual Output, Balanced Loads
Vin=Min. to Max.
Io=10% to 100%
Conditions
Min.
---
---
---
---
---
---
---
120
---
---
---
Continuous
Typ.
{1.0
{0.5
{0.1
{0.5
55
---
---
---
300
{2
{0.01
Max.
{2.0
{2.0
{0.5
{1.0
80
100
15
---
500
{4
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms
%
uS
%
%/]
General Specifications
Parameter
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
Min.
1500
1650
1000
---
290
700
Typ.
---
---
---
1200
330
---
Max.
---
---
---
1500
400
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Remote On/Off Control
Parameter
Supply On
Supply Off
Standby Input Current
Control Input Current ( on )
Control Input Current ( off )
Control Common
Vin-RC=5.0V
Vin-RC=0V
Conditions
Min.
-0.7
---
---
---
Typ.
---
---
---
---
Max.
0.8
10
50
-1
Unit
VDC
mA
uA
mA
2.5 to 5.5VDC or Open Circuit
Referenced to Negative Input
3
MINMAX
REV:0 2005/04
MKW2500 Series
Capacitive Load
Models by Vout
Maximum Capacitive Load
# For each output
3.3V
470
5V
470
5.1V
470
12V
470
15V
470
{12V
#
220
{15V
#
220
Unit
uF
Input Fuse Selection Guide
12V Input Models
2500mA Slow - Blow Type
24V Input Models
1250mA Slow - Blow Type
48V Input Models
750mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
110
100
Vin ( VDC )
90
80
70
60
50
40
30
20
10
0
10uS
100uS
1mS
10mS
100mS
12VDC Input Models
24VDC Input Models
48VDC Input Models
REV:0 2005/04
MINMAX
4
MKW2500 Series
100
100
90
Efficiency (%)
Low
Nom
Input Voltage (V)
High
90
Efficiency (%)
80
80
70
70
60
50
Low
Nom
Input Voltage (V)
High
60
50
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
80
70
60
50
40
30
100
90
80
Efficiency (%)
70
60
50
40
Efficiency (%)
10
20
40
60
Load Current (%)
80
100
30
10
20
40
60
Load Current (%)
80
100
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
100
80
Output Power (%)
100LFM
Natural
convection
400LFM
200LFM
60
40
20
0
-40
〜
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
5
MINMAX
REV:0 2005/04
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