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MKW3000 Series
20W, Wide Input Range, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 89% 1500VDC Isolation MTBF > 800,000 Hours 2:1 Wide Input Range CSA1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Remote On/Off Control Soft Start Over Voltage Protection
Minmax's MKW3000 series, comprising 18 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 20W of power into a 2x1x0.4 inch package, with efficiency as high as 89%, the MKW3000 has wide input ranges of 9-18VDC, 18-36VDC and 36-75VDC and is available in output voltages of 3.3V, 5V, 12V, 15V, {12V and {15VDC. Other feathers include continuous short circuit protection, overvoltage 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
EN55022 Wide Range
OVP
Protection Remote on/off
High Power Density
More Power
1500 VDC
EMI
2:1
Block Diagram
Single Output Dual Output
+Vin
LC Filter
+Vo
+Vin
LC Filter
+Vo Com.
-Vo OVP -Vin On/Off PWM Isolation Ref.Amp -Vin On/Off PWM Isolation Ref.Amp OVP
-Vo
1
MINMAX
REV:0 2005/04
MKW3000 Series
Model Selection Guide
Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current mA (Typ.) Over Voltage Protection VDC 3.9 6.8 15 18 {15 {18 3.9 6.8 15 18 {15 {18 3.9 6.8 15 18 {15 {18 Efficiency
VDC MKW3021 MKW3022 MKW3023 MKW3024 MKW3026 MKW3027 MKW3031 MKW3032 MKW3033 MKW3034 MKW3036 MKW3037 MKW3041 MKW3042 MKW3043 MKW3044 MKW3046 MKW3047
12 ( 9 ~ 18 )
24 ( 18 ~ 36 )
48 ( 36 ~ 75 )
VDC 3.3 5 12 15 {12 {15 3.3 5 12 15 {12 {15 3.3 5 12 15 {12 {15
Max. mA 4000 4000 1670 1340 {835 {670 4000 4000 1670 1340 {835 {670 4000 4000 1670 1340 {835 {670
Min. mA 240 240 100 80 {50 {40 240 240 100 80 {50 {40 240 240 100 80 {50 {40
@Max. Load @No Load mA (Typ.) mA (Typ.) 1358 1984 1898 30 1903 1898 1903 671 980 938 17 941 938 941 335 490 469 10 471 469 471
50
30
20
@Max. Load % (Typ.) 81 84 88 88 88 88 82 85 89 89 89 89 82 85 89 89 89 89
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 4,500 Unit VDC 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.
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 +50 -40 +105 -50 +125 --95 Free-Air Convection Six-Sided Shielded, Metal Case EN55022 Class A Unit ] ] ] %
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. Specifications subject to change without notice. 9. To order the converter without Remote On/Off function, please add a suffix -N (e.g.MKW3021-N).
REV:0 2005/04
MINMAX
2
MKW3000 Series
Input Specifications
Parameter Start Voltage Model 12V Input Models 24V Input Models 48V Input Models Under Voltage Shutdown 12V Input Models 24V Input Models 48V Input Models Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models Min. 8.6 17 34 8.1 16 32 ----Typ. 8.8 17.5 35 8.3 16.5 33 ----Pi Filter Max. 9 18 36 8.5 17 34 2 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. --------------110 ------Continuous Typ. {0.5 {0.5 {0.1 {0.1 55 ------150 {2 {0.01 Max. {1.0 {2.0 {0.3 {0.5 80 100 10 160 300 {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 --290 800 Typ. ------1200 330 --Max. ------1500 360 --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 ------Typ. --2 ----Max. 1 5 5 -100 Unit VDC mA uA uA 2.5 to 100VDC or Open Circuit
Referenced to Negative Input
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MINMAX
REV:0 2005/04
MKW3000 Series
Capacitive Load
Models by Vout Maximum Capacitive Load # For each output 3.3V 6800 5V 6800 12V 680 15V 680 {12V # 270 {15V # 270 Unit uF
Input Fuse Selection Guide
12V Input Models 4000mA Slow - Blow Type 24V Input Models 2000mA Slow - Blow Type 48V Input Models 1000mA Slow - Blow Type
Input Voltage Transient Rating
150 140 130 120 110 100 Vin ( VDC ) 90 80 70 60 50 40 30 20 10 0 10uS 100uS 1mS 10mS 100mS 12VDC Input Models 24VDC Input Models 48VDC Input Models
REV:0 2005/04
MINMAX
4
MKW3000 Series
100 90 Efficiency (%) 80 70 60 50 Efficiency (%) Low Nom Input Voltage (V) High
100 90 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 (%) Efficiency (%) 10 20 40 60 80 70 60 50 40 30 20 100
90 80 70 60 50 40 30 20 10 20 40 60 80 100
Load Current (%)
Load Current (%)
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
100 80 Output Power (%) Natural convection 60 100LFM 200LFM 400LFM
40
20 0 -40
50 60 70 80 ] 90 100 110
Ambient Temperature
Derating Curve
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MINMAX
REV:0 2005/04
MKW3000 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.
Overvoltage Protection
The output overvoltage clamp consists of control circuitry, which is independent of the primary regulation loop, that monitors the voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage control that reduces the risk of output overvoltage. The OVP level can be found in the output data.
DC / DC Converter -Vin -Out
Cin
Peak-to-Peak Output Noise Measurement Test
Use a Cout 1.0uF 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
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 22uF for the 12V input devices and a 6.8uF for the 24V and 48V devices.
+Vin Dual Output DC / DC Converter -Vin
+Out Com.
Copper Strip Cout Cout Scope Resistive Load Scope
+ DC Power Source + Cin
+Vin DC / DC Converter -Vin
+Out Load -Out
-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 -0V to 1.0V. A logic high is 2.5V to 100V. The maximum sink current at on/off terminal during a logic low is -100 uA. The maximum allowable leakage current of the switch at on/off terminal (2.5 to 100V) is 5uA.
REV:0 2005/04
MINMAX
6
MKW3000 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 MKW3000 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 270uF maximum capacitive load for dual outputs, 680uF capacitive load for 12V & 15V outputs and 6800uF capacitive load for 3.3V & 5V 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 105C. 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
REV:0 2005/04
MKW3000 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 Remote On/Off Dual Output +Vin -Vin +Vout Common -Vout Remote On/Off
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 : 30g : UL94V-0
The MKW3000 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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