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MKW2600 Series
15W, Ultra-Wide Input Range, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 86% 1500VDC Isolation MTBF > 700,000 Hours 4:1 Wide Input Range UL1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Remote On/Off Control UL 94V-0 Package Material Internal SMD Construction
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.
I/O Isolation
Wide Range
4:1
High Power Density
More Power
1500 VDC
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
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MINMAX
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MKW2600 Series
Model Selection Guide
Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current mA (Typ.) Efficiency
VDC MKW2621 MKW2622 MKW2623 MKW2624 MKW2625 MKW2626 MKW2627 MKW2629 MKW2631 MKW2632 MKW2633 MKW2634 MKW2635 MKW2636 MKW2637 MKW2639
24 ( 9 ~ 36 )
48 ( 18 ~ 75 )
VDC 3.3 5 12 15 {5 {12 {15 5.1 3.3 5 12 15 {5 {12 {15 5.1
Max. mA 3000 3000 1250 1000 1500 {625 {500 3000 3000 3000 1250 1000 1500 {625 {500 3000
Min. mA 300 300 125 100 150 {62.5 {50 300 300 300 125 100 150 {62.5 {50 300
@Max. Load @No Load mA (Typ.) mA (Typ.) 528 762 735 726 25 771 735 726 787 264 381 368 363 15 386 368 363 393
40
30
@Max. Load % (Typ.) 78 82 85 86 81 85 86 81 78 82 85 86 81 85 86 81
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
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.
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 Conducted EMI Conditions Ambient Case Min. Max. -40 +60 -40 +100 -50 +125 --95 Free-Air Convection Six-Sided Shielded, Metal Case EN55022 Class A Unit ] ] ] %
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.
REV:0 2005/04
MINMAX
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MKW2600 Series
Input Specifications
Parameter Start Voltage Model 24V Input Models 48V Input Models Under Voltage Shutdown Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models 24V Input Models 48V Input Models Min. 8 15 7 13 ----Typ. 8.5 17 8 15 ----Pi Filter Max. 9 18 8.5 17 1 3500 A mW VDC Unit
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 25% Load Step Change Over Line, Load & Temp. Dual Output, Balanced Loads Vin=Min. to Max. Io=10% to 100% Conditions 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 % %/]
General Specifications
Parameter Isolation Voltage Rated Isolation Voltage Test Isolation Resistance Isolation Capacitance Switching Frequency MTBF MIL-HDBK-217F @ 25], Ground Benign Conditions 60 Seconds Flash Tested for 1 Second 500VDC 100KHz,1V 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 Vin-RC=5.0V Vin-RC=0V Conditions Min. -0.7 ------Typ. --------Max. 0.8 10 50 -1 Unit VDC mA uA mA 2.5 to 5.5VDC or Open Circuit
Referenced to Negative Input
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MKW2600 Series
Capacitive Load
Models by Vout Maximum Capacitive Load # For each output 3.3V 470 5V 470 5.1V 470 12V 470 15V 470 {5V # 220 {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
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MKW2600 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
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MKW2600 Series
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.
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.
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.
DC / DC Converter -Vin -Out
Cin
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. 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.
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MKW2600 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 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.
Position of air velocity probe and thermocouple 15mm / 0.6in
50mm / 2in
Air Flow
DUT
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MKW2600 Series
Mechanical Dimensions
10.20 [0.402] 10.20 [0.402] 2.5 [0.1]
Top View ( 2.54 mm / 0.1 inch grids )
Connecting Pin Patterns
Single Output
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
Millimeters X.X{0.25 X.XX{0.13 {0.05
Inches X.XX{0.01 X.XXX{0.005 {0.002
Pin
Pin Connections
Pin 1 2 3 4 5 6 Single Output +Vin -Vin +Vout No Pin -Vout Dual Output +Vin -Vin +Vout Common -Vout
Physical Characteristics
50.8*25.4*10.2 mm 2.0*1.0*0.4 inches
Case Size
:
Case Material Weight Flammability
: Metal With Non-Conductive Baseplate : 32g : UL94V-0
Remote On/Off (Optional)
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.
REV:0 2005/04
MINMAX
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