Dual Output
+Vo
PWM
Isolation
Ref.Amp
LC
Filter
+Vin
-Vin
Com.
-Vo
Single Output
PWM
Isolation
Ref.Amp
LC
Filter
+Vin
-Vin
-Vo
+Vo
Block Diagram
Remote on/off
EN55022
EMI
I/O Isolation
1500
VDC
More Power
High
Power
Density
Wide Range
4:1
Minmax's MKW2600 series, comprising 16 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 MKW2600 has ultra-wide input ranges of
9-36VDC and 18-75VDC which is available in output voltages of 3.3V, 5V,
5.1V, 12V, 15V, 5V, 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.
Internal SMD Construction
UL 94V-0 Package Material
Remote On/Off Control
Six-Sided Shielding
Complies with EN55022 Class A
UL1950 Safety Approval
4:1 Wide Input Range
MTBF > 700,000 Hours
1500VDC Isolation
Efficiency up to 86%
Key Features
15W, Ultra-Wide Input Range, Single & Dual Output DC/DC Converters
MKW2600 Series
REV:0 2005/04
MINMAX
1
81
393
300
3000
5.1
MKW2639
86
363
{50
{500
{15
MKW2637
85
368
{62.5
{625
{12
MKW2636
81
386
150
1500
{5
MKW2635
86
363
100
1000
15
MKW2634
85
368
125
1250
12
MKW2633
82
381
300
3000
5
MKW2632
78
30
15
264
300
3000
3.3
48
( 18 ~ 75 )
MKW2631
81
787
300
3000
5.1
MKW2629
86
726
{50
{500
{15
MKW2627
85
735
{62.5
{625
{12
MKW2626
81
771
150
1500
{5
MKW2625
86
726
100
1000
15
MKW2624
85
735
125
1250
12
MKW2623
82
762
300
3000
5
MKW2622
78
40
25
528
300
3000
3.3
24
( 9 ~ 36 )
MKW2621
% (Typ.)
mA (Typ.)
mA (Typ.)
mA (Typ.)
mA
mA
VDC
VDC
@Max. Load
@No Load
@Max. Load
Min.
Max.
Efficiency
Reflected
Ripple
Current
Input Current
Output Current
Output
Voltage
Input
Voltage
Model
Number
Model Selection Guide
EN55022 Class A
Conducted EMI
Six-Sided Shielded, Metal Case
RFI
Free-Air Convection
Cooling
%
95
---
Humidity
]
+125
-50
Storage Temperature
]
+100
-40
Case
Operating Temperature
]
+60
-40
Ambient
Operating Temperature
Unit
Max.
Min.
Conditions
Parameter
Environmental Specifications
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
mW
5,000
---
Internal Power Dissipation
]
260
---
Lead Temperature (1.5mm from case for 10 Sec.)
VDC
100
-0.7
48VDC Input Models
VDC
50
-0.7
24VDC Input Models
Input Surge Voltage
( 1000 mS )
Unit
Max.
Min.
Parameter
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.
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. MKW2621-RC).
9. To order the converter with EN55022 Class A
function, please add a suffix A (e.g. MKW2621A).
10. Specifications subject to change without notice.
Absolute Maximum Ratings
MKW2600 Series
2
MINMAX
REV:0 2005/04
Pi Filter
Input Filter
mW
3500
---
---
Short Circuit Input Power
A
1
---
---
All Models
Reverse Polarity Input Current
17
15
13
48V Input Models
8.5
8
7
24V Input Models
Under Voltage Shutdown
18
17
15
48V Input Models
VDC
9
8.5
8
24V Input Models
Start Voltage
Unit
Max.
Typ.
Min.
Model
Parameter
Input Specifications
Continuous
Output Short Circuit
%/]
{0.02
{0.01
---
Temperature Coefficient
%
{4
{2
---
Transient Response Deviation
uS
500
300
---
25% Load Step Change
Transient Recovery Time
%
---
---
120
Over Power Protection
mV rms
15
---
---
Ripple & Noise (20MHz)
mV P-P
100
---
---
Over Line, Load & Temp.
Ripple & Noise (20MHz)
mV P-P
80
55
---
Ripple & Noise (20MHz)
%
{1.0
{0.5
---
Io=10% to 100%
Load Regulation
%
{0.5
{0.1
---
Vin=Min. to Max.
Line Regulation
%
{2.0
{0.5
---
Dual Output, Balanced Loads
Output Voltage Balance
%
{2.0
{1.0
---
Output Voltage Accuracy
Unit
Max.
Typ.
Min.
Conditions
Parameter
Output Specifications
K Hours
---
---
700
MIL-HDBK-217F @ 25], Ground Benign
MTBF
KHz
400
330
290
Switching Frequency
pF
1500
1200
---
100KHz,1V
Isolation Capacitance
M[
---
---
1000
500VDC
Isolation Resistance
VDC
---
---
1650
Flash Tested for 1 Second
Isolation Voltage Test
VDC
---
---
1500
60 Seconds
Isolation Voltage Rated
Unit
Max.
Typ.
Min.
Conditions
Parameter
General Specifications
Referenced to Negative Input
Control Common
mA
-1
---
---
Vin-RC=0V
Control Input Current ( off )
uA
50
---
---
Vin-RC=5.0V
Control Input Current ( on )
mA
10
---
---
Standby Input Current
VDC
0.8
---
-0.7
Supply Off
2.5 to 5.5VDC or Open Circuit
Supply On
Unit
Max.
Typ.
Min.
Conditions
Parameter
Remote On/Off Control
MKW2600 Series
REV:0 2005/04
MINMAX
3
# For each output
uF
220
220
220
470
470
470
470
470
Maximum Capacitive Load
Unit
{15V #
{12V #
{5V #
15V
12V
5.1V
5V
3.3V
Models by Vout
Capacitive Load
1250mA Slow - Blow Type
2500mA Slow - Blow Type
48V Input Models
24V Input Models
Input Fuse Selection Guide
Vin ( VDC )
10uS
125
120
115
110
105
100
80
75
70
100uS
1mS
10mS
100mS
65
60
55
50
45
40
48VDC Input Models
24VDC Input Models
~
130
Input Voltage Transient Rating
MKW2600 Series
4
MINMAX
REV:0 2005/04
Derating Curve
]
Ambient Temperature
Output Power (%)
0
20
40
60
80
100
-40
50
60
80
100
110
90
70
400LFM
200LFM
100LFM
Natural
convection
Efficiency vs Output Load ( Dual Output )
Efficiency vs Output Load ( Single Output )
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60
40
20
10
80
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60
40
20
10
80
Efficiency vs Input Voltage ( Dual Output )
Efficiency vs Input Voltage ( Single Output )
50
60
70
80
90
100
Input Voltage (V)
Efficiency (%)
Nom
Low
High
50
60
70
80
90
100
Input Voltage (V)
Efficiency (%)
Nom
Low
High
MKW2600 Series
REV:0 2005/04
MINMAX
5
Test Configurations
Input Reflected-Ripple Current Test Setup
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.
Design & Feature Considerations
Remote On/Off
Positive logic remote on/off turns the module on during a
logic high voltage on the remote on/off pin, and off during a
logic low.
To turn the power module on and off, the user must supply
a switch to control the voltage between the on/off terminal and
the -Vin terminal.
The switch can be an open collector or equivalent.
A logic low is -0.7V to 0.8V.
A logic high is 2.5V to 5.5V.
The maximum sink current at on/off terminal during a logic
low is -1 mA.
The maximum allowable leakage current of the switch at
on/off terminal (2.5 to 5.5V) is 50uA.
Overcurrent Protection
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.
Input Source Impedance
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.
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 10uF for the 24V and 48V input devices.
MKW2600 Series
6
MINMAX
REV:0 2005/04
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
Battery
+
Lin
+
Cin
To Oscilloscope
Current
Probe
+Out
-Out
+Vin
-Vin
Dual Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Com.
Scope
Cout
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
DC Power
Source
+
-
Cin
Output Ripple Reduction
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 4.7uF
capacitors at the output.
Maximum Capacitive Load
The MKW2600 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 220uF
maximum capacitive load
for dual outputs and 470
u
F
capacitive load
for single outputs.
The maximum capacitance can be found in the data sheet.
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 100C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
MKW2600 Series
REV:0 2005/04
MINMAX
7
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Com.
Dual Output
DC / DC
Converter
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
DUT
Position of air velocity
probe and thermocouple
50mm / 2in
Air Flow
15mm / 0.6in
The MKW2600 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical
characteristics over a wide temperature range or in high humidity environments.
The encapsulant and unit case are both rated to UL 94V-0 flammability specifications.
Leads are tin plated for improved solderability.
UL94V-0
:
Flammability
Remote On/Off (Optional)
6
32g
:
Weight
-Vout
-Vout
5
Common
No Pin
4
Metal With Non-Conductive Baseplate
:
Case Material
+Vout
+Vout
3
-Vin
-Vin
2
2.0*1.0*0.4 inches
+Vin
+Vin
1
50.8*25.4*10.2 mm
:
Case Size
Dual Output
Single Output
Pin
Physical Characteristics
Pin Connections
{0.002
{0.05
Pin
X.XXX{0.005
X.XX{0.13
X.XX{0.01
X.X{0.25
Inches
Millimeters
Tolerance
Dual Output
Single Output
25.4 [1.00]
10.2 [0.40]
6.0 [0.24]
50.8
[2.0
0]
15.2
[0.6
0]
10.2 [0.40]
Bottom
Side
1
2
3
4
5
6
10.20 [0.402] 10.20 [0.402]
2.5 [0.1]
5.08 [0.200]
20.3
0 [0.
8
0
0
]
1.00
[ 0.
03
9]
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Mechanical Dimensions
MKW2600 Series
8
MINMAX
REV:0 2005/04
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