10 Watts 2:1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
High Efficiency up to 83%
2:1 Input Range
I/O Isolation 1500VDC
SMT Technology
Short Circuit Protection
Industry Standard Pinout
EMI Complies With EN55022 Class A
Six-Side Shielded Case
MTBF > 700,000 Hours
MKW1000 series of DC/DC converters, comprising 24
different models, is designed for a wide range of applications
including 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 10W of power into a 2 x 1 x 0.4 inch package, with
efficiencies as high as 83%, the MKW1000 has wide input ranges of
9-18VDC, 18-36VDC and 36-75VDC and is available in output
voltages of 3.3V, 5V, 12V, 15V, 24V, {5V, {12V and {15V.
Other feathers include continuous short circuit protection,
six-side shielded case and EN55022 level A conducted noise
compliance minimize design-in time, cost and eliminate the need for
external components.
$
Low Cost
1500
VDC
I/O Isolation
EMI
EN55022
2:1
Wide Range
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
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Reflected
Ripple
Current
mA (Typ.)
Efficiency
VDC
MKW1021
MKW1022
MKW1023
MKW1024
MKW1025
MKW1026
MKW1027
MKW1028
MKW1031
MKW1032
MKW1033
MKW1034
MKW1035
MKW1036
MKW1037
MKW1038
MKW1041
MKW1042
MKW1043
MKW1044
MKW1045
MKW1046
MKW1047
MKW1048
VDC
3.3
5
12
15
24
{5
{12
{15
3.3
5
12
15
24
{5
{12
{15
3.3
5
12
15
24
{5
{12
{15
Max.
mA
2400
2000
830
670
416
{1000
{416
{333
2400
2000
830
670
416
{1000
{416
{333
2400
2000
830
670
416
{1000
{416
{333
Min.
mA
120
100
42
34
21
{50
{21
{17
120
100
42
34
21
{50
{21
{17
120
100
42
34
21
{50
{21
{17
@Max. Load
mA (Typ.)
917
1082
1038
1047
1027
1068
1027
1041
434
534
506
511
501
521
507
507
217
260
253
252
251
257
251
251
@No Load
mA (Typ.)
@Max. Load
% (Typ.)
72
77
80
80
81
78
81
80
76
78
82
82
83
80
82
82
76
80
82
83
83
81
83
83
12
( 9 ~ 18 )
30
50
24
( 18 ~ 36 )
20
25
48
( 36 ~ 75 )
10
12
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
Note :
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.
Exceeding these values can damage the module. These are not continuous
operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conducted EMI
Conditions
Ambient
Case
Min.
Max.
-40
+71
-40
+90
-40
+125
---
95
Free-Air Convection
EN55022 Class A
Unit
]
]
]
%
5. Operation under no-load conditions will not
damage these devices; however they may not
meet all listed specifications.
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. Specifications subject to change without notice.
Input Specifications
Parameter
Start Voltage
Model
12V Input Models
24V Input Models
48V Input Models
Under Voltage Shortdown
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
---
3500
Pi Filter
Max.
9
18
36
8.5
17
34
2
4500
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 Balance Load
Vin=Min. to Max.
Io=10% to 100%
Conditions
Min.
---
---
---
---
---
---
---
120
---
---
---
Continuous
Typ.
{0.5
{0.5
{0.1
{0.1
50
---
---
---
150
{2
{0.01
Max.
{1.0
{2.0
{0.3
{0.5
75
100
15
---
300
{4
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms.
%
uS
%
%/]
General Specifications
Parameter
Isolation Voltage
Isolation Test Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Seconds
500VDC
100KHz,1V
Min.
1500
1650
1000
---
260
700
Typ.
---
---
---
150
300
---
Max.
---
---
---
470
340
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
Note: # For each output .
3.3V
2200
5V
2200
12V
2200
15V
2200
24V
2200
{5V
#
470
{12V
#
470
{15V
#
470
Unit
uF
Input Fuse Selection Guide
12V Input Models
3000mA Slow - Blow Type
24V Input Models
1500mA 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
100
90
Efficiency (%)
80
70
60
50
Efficiency (%)
Low
Nom
Input Voltage (V)
High
100
90
80
70
60
50
Low
Nom
Input Voltage (V)
High
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
80
Efficiency (%)
Efficiency (%)
10
20
40
60
80
70
60
50
40
30
20
100
90
80
70
60
50
40
30
20
10
20
40
60
80
100
Load Current (%)
Load Current (%)
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
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