MKW2600 / MKW2600A Series
15 Watts 4 :1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
y
y
y
y
y
y
y
High Efficiency up to 86%
4:1 Input Range
I / O Isolation 1500VDC
Short Circuit Protected
Industry Standard Pinout
Six-Side Shielded Case
EMI Complies With EN55022 Class A
(Only For MKW2600A Series)
y Remote on/off Control (Optional)
y MTBF > 700,000 Hours
Minmax's MKW2600 series, comprising 10 different models, has
been conceived as an applications 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 2 x 1 x 0.4 inch package, with
efficiency as high as 86%, the MKW2500 has wide input ranges of
9-36VDC, 18-75VDC and is available in output voltages of 3.3V,
5.1V, 12V, {12V and {15V.
4:1
High
Power
Density
Wide Range
More Power
1500
VDC
Other feathers include continuous short circuit protection, remote
on/off,six-side shieled case and EN55022 level A conducted noise
compliance minimize design-in time,cost and eliminate the need for
external components.
.
I/O Isolation
EMI
EN55022
Remote on/off
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
-Vin
1
PWM
Isolation
Ref.Amp
-Vo
-Vin
MINMAX
PWM
Isolation
Ref.Amp
2004/REV:3
MKW2600 / MKW2600A Series
Model Selection Guide
Model Number
MKW2621
MKW2622
MKW2623
MKW2626
MKW2627
MKW2631
MKW2632
MKW2633
MKW2636
MKW2637
Input
Voltage
Output
Voltage
VDC
VDC
3.3
5.1
12
{12
{15
3.3
5.1
12
{12
{15
24
( 9 ~ 36 )
48
( 18 ~ 75 )
Output Current
Max.
mA
3000
2950
1250
{625
{500
3000
2950
1250
{625
{500
Min.
mA
300
295
125
{62.5
{50
300
295
125
{62.5
{50
Efficiency
@Max. Load @No Load
mA (Typ.)
mA (Typ.)
528
764
726
25
726
726
264
382
363
15
363
363
@Max. Load
% (Typ.)
78
82
85
85
86
78
82
85
85
86
Note :
Absolute Maximum Ratings
Parameter
24VDC Input Models
Input Surge Voltage
( 1000 mS )
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Input Current
Min.
-0.7
-0.7
-----
Max.
50
100
260
5,000
Unit
VDC
VDC
]
mW
Exceeding the absolute maximum ratings of the unit could cause damage.
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.
5. Operation at no-load will not damage these units.
However, they may not meet all 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.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
RFI
2004/REV:3
Conditions
Ambient
Case
Min.
Max.
-40
+60
-40
+100
-50
+125
--95
Free-Air Convection
Six-Side Shielded Metal Case
Unit
]
]
]
%
MINMAX
8.To order the converter with Remote on/off function
,please add suffix - RC ( EX : MK2621-RC ).
9. An optional internal filter is available. When the
filter is added, the MKW2500 will meet
EN55022-A. Add the suffix “ A” to the model
number, e.g. MKW2621A.
10. Specifications subject to change without notice.
2
MKW2600 / MKW2600A Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shortdown
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
Model
24V Input Models
48V Input Models
24V Input Models
48V Input Models
Min.
8
15
7
13
Typ.
8.5
17
8
15
Max.
9
18
8.5
17
Unit
All Models
-----
-----
1
3500
A
mW
VDC
Pi Filter
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
Conditions
Dual Output , Balanced Loads
Vin=Min. to Max.
Io=10% to 100%
Over Line,Load & Temp
25% Load Step Change
Temperature Coefficient
Output Short Circuit
Min.
---------
Typ.
{1.0
{0.5
{0.1
{0.5
Max.
{2.0
{2.0
{0.5
{1.0
Unit
%
%
%
%
-------
55
-----
80
100
15
mV P-P
mV P-P
mV rms.
120
-----
--300
{2
--500
{4
%
uS
%
{0.01
{0.02
%/]
--Continuous
General Specifications
Parameter
Isolation Voltage
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Conditions
60 Seconds
Flash Tested for 1 Second
Min.
1500
1650
Typ.
-----
Max.
-----
Unit
VDC
VDC
500VDC
100KHz,1V
1000
--290
--1200
330
--1500
400
M[
pF
KHz
MIL-HDBK-217F @ 25], Ground Benign
700
---
---
K Hours
Min.
Typ.
2.5 to 5.5VDC or Open Circuit
Max.
Unit
-0.7
-------
0.8
10
50
-1
VDC
mA
uA
mA
Remote On/Off Control
Parameter
Supply On
Conditions
Supply Off
Standby Input Current
Control Input Current ( on )
Control Input Current ( off )
Control Common
3
---------
Referenced to Negative Input
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Capacitive Load
Models by Vout
Maximum Capacitive Load
3.3V
470
5.1V
470
12V
470
{12V #
220
{15V #
220
Unit
uF
Note: # For each output .
Input Fuse Selection Guide
24V Input Models
2500mA Slow - Blow Type
48V Input Models
1250mA Slow - Blow Type
Input Voltage Transient Rating
130
125
120
115
110
48VDC Input Models
105
~
Vin ( VDC )
100
80
75
70
65
24VDC Input Models
60
55
50
45
40
10uS
2004/REV:3
100uS
1mS
MINMAX
10mS
100mS
4
100
100
90
90
Efficiency (%)
Efficiency (%)
MKW2600 / MKW2600A Series
80
70
80
70
60
60
50
Low
Nom
50
High
Low
Nom
Input Voltage (V)
Input Voltage (V)
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency (%)
High
60
50
40
60
50
40
30
10
20
40
60
Load Current (%)
80
100
30
20
40
60
80
100
Load Current (%)
Efficiency vs Output Load ( Single Output )
100
Efficiency vs Output Load ( Dual Output )
400LFM
100LFM
80
Output Power (%)
10
200LFM
Natural
convection
60
40
20
0
～
-40
50
60
70
80
Ambient Temperature
90
100
110
]
Derating Curve
5
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
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.
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.
+
+Vin
+Out
Single Output
DC / DC
Converter
Copper Strip
Cout
-Vin
-Out
+Vin
+Out
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Scope
DC Power
Source
Resistive
Load
-
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-Vin
-Out
Copper Strip
Cout
Scope
Cout
Scope
Resistive
Load
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.
Negative logic remote on/off turns the module off during a
logic low and on during a logic high.
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.
2004/REV:3
MINMAX
6
MKW2600 / MKW2600A Series
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.
+
+Vin
+Out
Single Output
DC / DC
Converter
DC Power
Source
Cout
-
-Vin
-Out
+
+Vin
+Out
Dual Output
DC / DC
Com.
Converter
DC Power
Source
-
-Vin
Load
Cout
Load
-Out
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 470uF
capacitive load for single outputs.
The maximum capacitance can be found in the data.
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 100° C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
15mm / 0.6in
7
50mm / 2in
Air Flow
DUT
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Mechanical Dimensions
5
Side
6
Dual Output
15.2 [0.60]
2
1.00[
Bottom
1
0.039]
4
Single Output
2.5 [0.1]
20.30 [0.800]
3
Top View ( 2.54 mm / 0.1 inch grids )
50.8 [2.00]
10.20 [0.402] 10.20 [0.402]
Connecting Pin Patterns
10.2 [0.40]
5.08 [0.200]
25.4 [1.00]
Tolerance
Pin
6.0 [0.24]
Millimeters
.X{0.25
.XX{0.25
{0.05
10.2 [0.40]
Inches
.XX{0.01
.XXX{0.01
{0.002
Pin Connections
Pin
1
2
3
4
5
6
Physical Characteristics
Single Output
+Vin
-Vin
+Vout
Dual Output
+Vin
-Vin
+Vout
No Pin
Common
-Vout
-Vout
Remote on/off (Optional)
50.8*25.4*10.2 mm
2.0*1.0*0.4 inches
Case Size
:
Case Material
Weight
: Nickl-Coated Copper
With Non-Conductive Baseplate
: 32g
Flammability
: UL94V-0
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.
2004/REV:3
MINMAX
8