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MKW2600 / MKW2600A Series
15 Watts 4 :1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
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) Remote on/off Control (Optional) 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. 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. .
4:1
Wide Range
High Power Density
More Power
1500 VDC
I/O Isolation
EMI
EN55022
Remote on/off
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
1
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Model Selection Guide
Model Number Input Voltage Output Voltage Output Current Input Current Efficiency
VDC MKW2621 MKW2622 MKW2623 MKW2626 MKW2627 MKW2631 MKW2632 MKW2633 MKW2636 MKW2637
24 ( 9 ~ 36 )
48 ( 18 ~ 75 )
VDC 3.3 5.1 12 {12 {15 3.3 5.1 12 {12 {15
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
@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
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 Min. -0.7 -0.7 ----Max. 50 100 260 5,000 Unit 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. 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.
Exceeding the absolute maximum ratings of the unit could cause damage. These are not continuous operating ratings.
Environmental Specifications
Parameter Operating Temperature Operating Temperature Storage Temperature Humidity Cooling RFI Conditions Ambient Case Min. Max. -40 +60 -40 +100 -50 +125 --95 Free-Air Convection Six-Side Shielded Metal Case Unit ] ] ] %
7. Other input and output voltage may be available, please contact factory. 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.
2004/REV:3
MINMAX
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 All Models Min. 8 15 7 13 ----Typ. 8.5 17 8 15 ----Pi Filter Max. 9 18 8.5 17 1 3500 Unit
VDC
A mW
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 Conditions Dual Output , Balanced Loads Vin=Min. to Max. Io=10% to 100% Over Line,Load & Temp Min. --------------120 ------Continuous Typ. {1.0 {0.5 {0.1 {0.5 55 ------300 {2 {0.01 Max. {2.0 {2.0 {0.5 {1.0 80 100 15 --500 {4 {0.02 Unit % % % % mV P-P mV P-P mV rms. % uS % %/]
25% Load Step Change
General Specifications
Parameter Isolation Voltage Isolation Voltage Test Isolation Resistance Isolation Capacitance Switching Frequency MTBF Conditions 60 Seconds Flash Tested for 1 Second 500VDC 100KHz,1V MIL-HDBK-217F @ 25], Ground Benign Min. 1500 1650 1000 --290 700 Typ. ------1200 330 --Max. ------1500 400 --Unit VDC VDC M[ pF KHz K Hours
Remote On/Off Control
Parameter Supply On Supply Off Standby Input Current Control Input Current ( on ) Control Input Current ( off ) Control Common Conditions Min. Typ. 2.5 to 5.5VDC or Open Circuit -0.7 --------------Max. 0.8 10 50 -1 Unit VDC mA uA mA
Referenced to Negative Input
3
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Capacitive Load
Models by Vout Maximum Capacitive Load Note: # For each output . 3.3V 470 5.1V 470 12V 470 {12V # 220 {15V # 220 Unit uF
Input Fuse Selection Guide
24V Input Models 2500mA Slow - Blow Type 48V Input Models 1250mA Slow - Blow Type
Input Voltage Transient Rating
130 125 120 115 110 105 100 Vin ( VDC ) 80 75 70 65 60 55 50 45 40 10uS 100uS 1mS 10mS 100mS 24VDC Input Models 48VDC Input Models
~
2004/REV:3
MINMAX
4
MKW2600 / MKW2600A Series
100 90 Efficiency (%)
100 90 Efficiency (%)
Low Nom Input Voltage (V) High
80 70 60 50
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 (%) 70 60 50 40 30 10 20 40 60 Load Current (%) 80 100
90 80 Efficiency (%) 70 60 50 40 30
10
20
40
60 Load Current (%)
80
100
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
5
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Test Configurations
Input Reflected-Ripple Current Test Setup
To Oscilloscope + Battery + Lin Current Probe +Vin +Out Load
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.
DC / DC Converter -Vin -Out
Cin
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.
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 Single Output DC / DC Converter -Vin -Out +Out Copper Strip Cout Scope Resistive Load
+ DC Power Source + Cin
+Vin DC / DC Converter -Vin
+Out Load -Out
+Vin Dual Output DC / DC Converter -Vin
+Out Com.
Copper Strip Cout Cout Scope Resistive Load Scope
-Out
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.
+ DC Power Source -Vin +Vin Single Output DC / DC Converter -Out +Out
Cout
Load
+ DC Power Source -
+Vin
+Out Dual Output DC / DC Com. Converter Cout Load
-Vin
-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
50mm / 2in
Air Flow
DUT
7
MINMAX
2004/REV:3
MKW2600 / MKW2600A Series
Mechanical Dimensions
10.20 [0.402] 10.20 [0.402] 2.5 [0.1]
Connecting Pin Patterns
Single Output
Top View ( 2.54 mm / 0.1 inch grids )
20.30 [0.800]
0.039]
3
4
5
1
2
6
1.00[
Bottom
Side
50.8 [2.00]
Dual Output
15.2 [0.60]
5.08 [0.200]
10.2 [0.40] 6.0 [0.24] 10.2 [0.40]
25.4 [1.00]
Tolerance
Pin
Millimeters .X{0.25 .XX{0.25 {0.05
Inches .XX{0.01 .XXX{0.01 {0.002
Pin Connections
Pin 1 2 3 4 5 6 Single Output +Vin -Vin +Vout Dual Output +Vin -Vin +Vout
Physical Characteristics
50.8*25.4*10.2 mm 2.0*1.0*0.4 inches
Case Size
:
Case Material Weight Flammability
No Pin Common -Vout -Vout Remote on/off (Optional)
: Nickl-Coated Copper With Non-Conductive Baseplate : 32g : 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

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