DC-DC Converter UNIT
KW Series
( 15 W WIDE INPUT RANGE DC-DC CONVERTER )
FEATURES
15W DIL PACKAGE
9-18V,18-36V,36-72V WIDE INPUT
RANGE
SHORT CIRCUIT PROTECTION
LOW COST
NO EXTERNAL COMPONENTS
REQUIRED
REGULATED OUTPUT
TYPICAL EFFICIENCY 80%
100% BURNED IN
INDUSTRY STANDARD PACKAGE
MTBF > 700,000 HOURS
OUTPUT SPECIFICATIONS
Voltage Setpoint Accuracy
Temperature Coefficient
Ripple & Noise (20MHz
BW)
Line Regulation
1
2
INPUT SPECIFICATIONS
+/-3% max
+/-0.03%/
O
C
Input Voltage Range
Input Filter
2:1 INPUT RANGE
Pi Network
100mVp-p max
+/-0.2% max
+/-0.2% max
Continuous
Load Regulation
GENERAL SPECIFICATIONS
Efficiency
Isolation Voltage
3
Short Circuit Protection
70% min
1000 VDC min
9
10 ohms min
200 KHz min
700,000 Hours
60.0g Typ
Six-Side Shielded Case
50.8mm*50.8mm*11mm
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature
Storage Temperature
Cooling
-25
O
C to +71
O
C
-55
O
C to +100
O
C
Free-Air Convection
Isolation Resistance
Switching Frequency
MTBF
Weight
Case Material
ALL SPECIFICATIONS TYPICAL AT NOMINAL
LINE,
FULL
LOAD
,
AND
25
O
Case Size
C
UNLESS
OTHERWISE NOTED.
1
2
3
High Line to Low Line.
Load Regulation is for output load current change from 10% to 100%.
For 10 seconds
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Page: 1 / 6
Version: 4-Oct-02
DC-DC Converter UNIT
KW Series
( 15 W WIDE INPUT RANGE DC-DC CONVERTER )
SELECTION GUIDE(1)
2:1 15W OUTPUT
MODEL
NUMBER
KWS-1205
KWS-1209
KWS-1212
KWS-1215
KWS-1224
KWD-1205
KWD-1212
KWD-1215
KWD-1224
KWS-2405
KWS-2412
KWS-2415
KWS-2424
KWD-2405
KWD-2412
KWD-2415
KWD-2424
KWS-4805
KWS-4812
KWS-4815
KWS-4824
KWD-4805
KWD-4812
KWD-4815
KWD-4824
INPUT
VOLTAGE
(VDC)
9-18
9-18
9-18
9-18
9-18
9-18
9-18
9-18
9-18
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
36-72
36-72
36-72
36-72
36-72
36-72
36-72
36-72
OUTPUT
VOLTAGE
(VDC)
5
9
12
15
24
+/-5
+/-12
+/-15
+/-24
5
12
15
24
+/-5
+/-12
+/-15
+/-24
5
12
15
24
+/-5
+/-12
+/-15
+/-24
OUTPUT
CURRENT
(mA)
3000
1670
1250
1000
625
+/-1500
+/-625
+/-500
+/-313
3000
1250
1000
625
+/-1500
+/-625
+/-500
+/-313
3000
1250
1000
625
+/-1500
+/-625
+/-500
+/-313
INPUT
4
CURRENT(mA)
FULL
LOAD
1623
1580
1563
1545
1543
1623
1563
1525
1510
780
762
762
753
750
762
753
750
396
381
381
375
375
381
381
375
NO
LOAD
40
30
40
38
38
40
40
38
38
20
18
18
18
20
18
18
20
10
9
9
9
10
9
9
9
77
79
80
81
81
77
80
82
83
80
82
82
83
83
82
83
83
79
82
82
83
83
82
82
83
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
EFF
(%)
5
ISOLATION
(VDC)
Note: Other input to output voltages may be available. Please contact factory.
4
5
NOMINAL INPUT VOLTAGE.
NOMINAL INPUT VOLTAGE,FULL LOAD.
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Page: 2 / 6
Version: 4-Oct-02
DC-DC Converter UNIT
KW Series
( 15 W WIDE INPUT RANGE DC-DC CONVERTER )
SELECTION GUIDE(2)
4:1 15W OUTPUT
MODEL
NUMBER
KWS-1205T
KWS-1209T
KWS-1212T
KWS-1215T
KWS-1224T
KWD-1205T
KWD-1212T
KWD-1215T
KWS-2405T
KWS-2412T
KWS-2415T
KWD-2405T
KWD-2412T
KWD-2415T
INPUT
VOLTAGE
(VDC)
9-36
9-36
9-36
9-36
9-36
9-36
9-36
9-36
18-72
18-72
18-72
18-72
18-72
18-72
OUTPUT
VOLTAGE
(VDC)
5
9
12
15
24
+/-5
+/-12
+/-15
5
12
15
+/-5
+/-12
+/-15
OUTPUT
CURRENT
(Ma)
3000
1670
1250
1000
625
+/-1500
+/-625
+/-500
3000
1250
1000
+/-1500
+/-625
+/-500
INPUT
6
CURRENT(mA)
FULL
LOAD
1623
1600
1562
1562
1562
1623
1562
1562
791
771
762
791
771
762
NO
LOAD
40
30
40
38
28
40
40
38
20
18
18
20
18
18
77
78
80
80
80
77
80
80
79
81
82
79
81
82
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
EFF
(%)
7
ISOLATION
(VDC)
Note: Other input to output voltages may be available. Please contact factory.
6
7
NOMINAL INPUT VOLTAGE.
NOMINAL INPUT VOLTAGE,FULL LOAD.
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Page: 3 / 6
Version: 4-Oct-02
DC-DC Converter UNIT
KW Series
( 15 W WIDE INPUT RANGE DC-DC CONVERTER )
SIMPLIFIED SCHEMATIC
SINGLE OUTPUT
+Vin
+Vout
+Vin
DUAL OUTPUT
+Vout
Common
-Vout
-Vin
PWM
CONTROLLER
ISOLATION
REFERENCE
&
ERROR AMP
-Vout
-Vin
PWM
CONTROLLER
ISOLATION
REFERENCE
&
ERROR AMP
MECHANICAL DIMENSIONS
PIN
1
2
3
4
5
SINGLE
+Vin
-Vin
+Vout
NO PIN
-Vout
DUAL
+Vin
-Vin
+Vout
Common
-Vout
RECOMMENDED FOOTPRINT DETAILS
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Page: 4 / 6
Version: 4-Oct-02
DC-DC Converter UNIT
KW Series
( 15 W WIDE INPUT RANGE DC-DC CONVERTER )
TYPICAL APPLICATIONS
SINGLE OUTPUT
INPUT
+Vin
+Vout
DUAL OUTPUT
INPUT
+Vin
+Vout
OUTPUT
OUTPUT
LOAD1
DC-DC
CONVERTER
-Vin
-Vout
LOAD
DC-DC
CONVERTER
-Vin
Common
LOAD2
-Vout
TEMPERATURE DERATING
OUTPUT POWER(W)
15.0
12.0
9.0
6.0
3.0
0.0
-25
0
25
50
70
90
SAFE
OPERATING
AREA
TA(degree C)
KW SERIES APPLICATION NOTES:
EXTERNAL CAPACITANCE REQUIREMENTS:
No external capacitance is required for operation of the KW series.
To meet the reflected ripple requirements of the converter, an input impedance of less than 0.5 ohm
from DC to 220KHz is required.
External output capacitance is not required for operation, however it is recommended that 10uF
tantalum and 0.1uF ceramic capacitance be selected for reduced system noise.
Additional output capacitance may be added for increased filtering, but should not exceed 220uF.
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Page: 5 / 6
Version: 4-Oct-02
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