TOTAL
POWER
INT'L
10 Watts 2:1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
y
High Efficiency up to 83%
y
y
y
y
y
y
y
y
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.
$
Low Cost
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.
1500
VDC
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.
I/O Isolation
EMI
2:1
EN55022
Wide Range
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
-Vin
PWM
Isolation
Ref.Amp
-Vo
-Vin
PWM
Isolation
Ref.Amp
TOTAL POWER INT'L Tel: 877-646-0900 Fax: 978-453-7395
Email: [email protected] http://www.total-power.com
-1-
Model Selection Guide
Model
Number
MKW1021
MKW1022
MKW1023
MKW1024
MKW1025
MKW1026
MKW1027
MKW1028
MKW1031
MKW1032
MKW1033
MKW1034
MKW1035
MKW1036
MKW1037
MKW1038
MKW1041
MKW1042
MKW1043
MKW1044
MKW1045
MKW1046
MKW1047
MKW1048
Input
Voltage
Output
Voltage
VDC
VDC
Max.
mA
Min.
mA
@Max. Load
mA (Typ.)
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
2400
2000
830
670
416
{1000
{416
{333
2400
2000
830
670
416
{1000
{416
{333
2400
2000
830
670
416
{1000
{416
{333
120
100
42
34
21
{50
{21
{17
120
100
42
34
21
{50
{21
{17
120
100
42
34
21
{50
{21
{17
917
1082
1038
1047
1027
1068
1027
1041
434
534
506
511
501
521
507
507
217
260
253
252
251
257
251
251
12
( 9 ~ 18 )
24
( 18 ~ 36 )
48
( 36 ~ 75 )
Output Current
Input Current
@No Load
mA (Typ.)
Reflected
Ripple
Current
mA (Typ.)
30
50
20
25
10
12
Efficiency
@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
Note :
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
Exceeding these values can damage the module. These are not continuous
operating ratings.
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.
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.
TOTAL POWER INT'L Tel: 877-646-0900 Fax: 978-453-7395
Email: [email protected] http://www.total-power.com
-2-
Input Specifications
Parameter
Model
Start Voltage
Under Voltage Shortdown
Min.
Typ.
12V Input Models
8
8.5
9
24V Input Models
15
17
18
48V Input Models
30
33
36
12V Input Models
7
8
8.5
24V Input Models
13
15
17
34
48V Input Models
Reverse Polarity Input Current
All Models
Short Circuit Input Power
Max.
Unit
VDC
25
29
---
---
2
A
---
3500
4500
mW
Unit
Input Filter
Pi Filter
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
---
{0.5
{1.0
%
Dual Output Balance Load
---
{0.5
{2.0
%
Line Regulation
Vin=Min. to Max.
---
{0.1
{0.3
%
Load Regulation
Io=10% to 100%
---
{0.1
{0.5
%
---
50
75
mV P-P
---
---
100
mV P-P
---
---
15
mV rms.
Over Power Protection
120
---
---
%
Transient Recovery Time
---
150
300
uS
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line,Load & Temp
Ripple & Noise (20MHz)
25% Load Step Change
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
---
{2
{4
%
---
{0.01
{0.02
%/]
Continuous
General Specifications
Parameter
Isolation Voltage
Isolation Test Voltage
Conditions
Min.
Typ.
Max.
Unit
60 Seconds
1500
---
---
VDC
Flash Tested for 1 Seconds
1650
---
---
VDC
Isolation Resistance
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
150
470
pF
260
300
340
KHz
700
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Capacitive Load
Models by Vout
Maximum Capacitive Load
Note: # For each output .
3.3V
5V
12V
15V
24V
{5V #
{12V #
{15V #
Unit
2200
2200
2200
2200
2200
470
470
470
uF
Input Fuse Selection Guide
12V Input Models
3000mA Slow - Blow Type
24V Input Models
48V Input Models
1500mA Slow - Blow Type
750mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
48VDC Input Models
110
Vin ( VDC )
100
90
80
70
24VDC Input Models
60
50
40
12VDC Input Models
30
20
10
0
10uS
100uS
1mS
10mS
100mS
100
90
90
Efficiency (%)
Efficiency (%)
100
80
70
60
80
70
60
50
Low
Nom
50
High
Low
Nom
Input Voltage (V)
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency (%)
Efficiency vs Input Voltage ( Single Output )
60
50
50
40
30
30
10
20
40
60
80
100
Load Current (%)
60
100LFM
400LFM
Natural
convection
200LFM
40
20
0
〜
-40
50
60
70
80
Ambient Temperature
Derating Curve
10
20
40
60
80
Efficiency vs Output Load ( Dual Output )
100
80
20
Load Current (%)
Efficiency vs Output Load ( Single Output )
Output Power (%)
60
40
20
High
Input Voltage (V)
90
]
100
110
100
Test Configurations
Overcurrent Protection
Input Reflected-Ripple Current Test Setup
To provide protection in a fault (output overload) condition,
the unit is equipped with internal current limiting circuitry and
can endure current limiting for an unlimited duration. At the
point of current-limit inception, the unit shifts from voltage
control to current control. The unit operates normally once the
output current is brought back into its specified range.
To Oscilloscope
+
+
Battery
+Vin
Lin
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
Load
Input Source Impedance
-Out
Input reflected-ripple current is measured with a inductor
Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
module, measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47uF ceramic capacitor.
Scope measurement should be made by using a BNC
socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC Converter.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
+Vin
Scope
Resistive
Load
-Out
+Out
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Capacitor mounted close to the power module helps
ensure stability of the unit, it is recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 15uF for the 12V input devices and a
4.7uF for the 24V and 48V devices.
+
DC Power
Source
Copper Strip
Cout
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
In applications where power is supplied over long lines and
output loading is high, it may be necessary to use a capacitor
at the input to ensure startup.
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
Output Ripple Reduction
Copper Strip
Cout
Scope
Cout
Scope
Resistive
Load
A good quality low ESR capacitor placed as close as
practicable across the load will give the best ripple and noise
performance.
To reduce output ripple, it is recommended to use 3.9uF
capacitors at the output.
+
+Vin
DC Power
Source
Design & Feature Considerations
+Out
Single Output
DC / DC
Converter
-
-Vin
+
+Vin
Cout
Load
-Out
Maximum Capacitive Load
The MKW1000 series has limitation of maximum
connected capacitance at the output.
The power module may be operated in current limiting
mode during start-up, affecting the ramp-up and the startup
time.
For optimum performance we recommend 470uF
maximum capacitive load for dual outputs and 2200uF
capacitive load for single outputs.
The maximum capacitance can be found in the data.
DC Power
Source
-
+Out
Dual Output
DC / DC Com.
Converter
-Vin
-Out
Cout
Load
Thermal Considerations
Many conditions affect the thermal performance of the
power module, such as orientation, airflow over the module
and board spacing. To avoid exceeding the maximum
temperature rating of the components inside the power
module, the case temperature must be kept below 90°C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
Mechanical Data
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
10.20 [0.402] 10.20 [0.402]
2
Dual Output
15.2 [0.60]
1
Side
1.00[
Bottom
50.8 [2.00]
5
0.039]
4
20.30 [0.800]
3
2.5 [0.10]
10.2 [0.40]
5.08 [0.200]
25.4 [1.00]
Tolerance
Pin
6.0 [0.24]
10.2 [0.40]
Millimeters
Inches
.X{0.25
.XX{0.01
.XX{0.25
{0.05
.XXX{0.01
{0.002
Pin Connections
Physical Characteristics
Pin
Single Output
Dual Output
1
+Vin
+Vin
2
-Vin
-Vin
3
+Vout
+Vout
4
No Pin
Common
5
-Vout
-Vout
50.8*25.4*10.2 mm
Case Size
:
Case Material
: Metal With Non-Conductive Baseplate
Weight
: 32g
Flammability
: UL94V-0
2.0*1.0*0.4 inches
Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical
properties in high humidity environment and over a wide operating temperature range.
The encapsulant and outer shell of the unit have UL94V-0 ratings. The leads are golden plated for better soldering.