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MKW5000 Series
25-30W, Wide Input Range, Single Output DC/DC Converters
Key Features
Efficiency up to 88% 1500VDC Isolation MTBF > 600,000 Hours 2:1 Wide Input Range UL1950 Safety Approval Complies with EN55022 Class A Six-Sided Shielding Remote On/Off Control Soft Start Over Voltage Protection Output Trim
Minmax's MKW5000-Series power modules are low-profile dc-dc converters that operate over input voltage ranges of 18-36VDC and 36-75VDC which provide precisely regulated output voltages of 2.5V, 3.3V, 5V, 5.1V, 12V and 15VDC, 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 30W of power into a 2x1x0.4inch package, with efficiencies as high as 88%, the MKW5000 includes continuous short circuit protection, overvoltage protection, output trim function, 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.
OVP
Protection Remote on/off
High Power Density
More Power
2:1
Wide Range
1500 VDC
I/O Isolation
EMI
EN55022
Block Diagram
+Vin UVLO
COMPARATORS
LC Filter
LC Filter A
+Vo
-Vo OVP
-Vin On/Off PWM Isolation Ref.Amp Trim
A: 2.5V, 3.3V, 5V and 5.1V-output models use the synchronous-rectifier configuration shown as above. 12V and 15V-output models employ a standard, diode-rectification architecture.
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Model Selection Guide
Model Number Input Voltage Output Voltage Output Current Input Current Reflected Ripple Current mA (Typ.) Over Voltage Protection VDC 3 3.9 6.8 15 18 6.8 3 3.9 6.8 15 18 6.8 Efficiency
VDC MKW5030 MKW5031 MKW5032 MKW5033 MKW5034 MKW5039 MKW5040 MKW5041 MKW5042 MKW5043 MKW5044 MKW5049
24 ( 18 ~ 36 )
48 ( 36 ~ 75 )
VDC 2.5 3.3 5 12 15 5.1 2.5 3.3 5 12 15 5.1
Max. mA 6000 6000 5000 2500 2000 5000 6000 6000 5000 2500 2000 5000
Min. mA 0 0 0 166 133 0 0 0 0 166 133 0
@Max. Load @No Load mA (Typ.) mA (Typ.) 744 50 959 50 1185 70 1420 20 1420 20 1207 70 372 40 480 40 604 50 710 10 710 10 604 50
100
50
@Max. Load % (Typ.) 84 86 88 88 88 88 84 86 88 88 88 88
Absolute Maximum Ratings
Input Surge Voltage ( 1000 mS ) Parameter 24VDC Input Models 48VDC Input Models Lead Temperature (1.5mm from case for 10 Sec.) Internal Power Dissipation Min. -0.7 -0.7 ----Max. 50 100 260 5500 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 +50 -40 +105 -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. MKW5030-RC). 9.To order the converter with EN55022 Class A function, please add a suffix A (e.g. MKW5030A). 10. Specifications subject to change without notice.
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Input Specifications
Parameter Start Voltage Under Voltage Shutdown Over Voltage Shutdown Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models Model 24V Input Models 48V Input Models 24V Input Models 48V Input Models 24V Input Models 48V Input Models Min. 17 34 16 32 40 80 ----Typ. 17.5 35 16.5 33 42 82 ----Pi Filter Max. 18 36 17 34 44 84 2 4500 A mW VDC Unit
Output Specifications
Parameter Output Voltage Accuracy Line Regulation Load Regulation (2.5/3.3/5/5.1Vout) Load Regulation (12/15Vout) 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. Vin=Min. to Max. Io=0% to 100% Io=10% to 100% Conditions Min. --------------110 ------Continuous Typ. {0.5 {0.1 {0.5 {0.5 75 ------200 {2 {0.01 Max. {1.0 {0.3 {1.0 {1.0 100 120 10 160 500 {5 {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 --280 600 Typ. ------1200 350 --Max. ------1500 400 --Unit VDC VDC M[ pF KHz K Hours
Remote On/Off Control
Parameter Supply On Supply Off Device Standby Input Current Control Input Current ( on ) Control Input Current ( off ) Control Common Vin-RC=5.0V Vin-RC=0V Conditions Min. -1 ------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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Capacitive Load
Models by Vout Maximum Capacitive Load 2.5V 6800 3.3V 6800 5V 6800 5.1V 6800 12V 680 15V 680 Unit uF
Input Fuse Selection Guide
24V Input Models 3000mA Slow - Blow Type 48V Input Models 1500mA Slow - Blow Type
Output Voltage Trim
Parameter Trim Up / Down Range Conditions % of nominal output voltage Min. {9.0 Typ. {10.0 Max. {11.0 Unit %
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 24VDC Input Models 48VDC Input Models
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100 90 Efficiency (%)
100 90 80 Efficiency (%)
Low Nom Input Voltage (V) High
80 70 60 50
70 60 50 40 30 20 10 20 40 60 Load Current (%) 80 100
Efficiency vs Input Voltage
Efficiency vs Output Load
100 400LFM 80 Output Power (%) Natural convection 100LFM 200LFM
60
40
20 0 -40
50 60 70 80 ] 90 100 110
Ambient Temperature
Derating Curve
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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
+Vin -Vin Enable +Out Trim Down -Out Trim Up Trim 10K Trim Up/Down
DC / DC Converter -Vin -Out
Cin
A 10K, 1 or 10 Turn trimpot is usually specified for continuous trimming. Trim pin may be safely left floating if it is not used. Connecting the external resistor (Radj-up) between the Trim and -Vout pins increases the output voltage to set the point as defined in the following equation:
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
Radj-up =
(33*Vout)- (30*Vadj) Vadj - Vout
Connecting the external resistor (Radj-down) between the Trim and +Vout pins decreases the output voltage set point as defined in the following equation:
Radj-down =
(36.667*Vadj) - (33*Vout) Vout-Vadj
Vout : Nominal Output Voltage Vadj : Adjusted Output Voltage Units : VDC/ K[
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 -1V to 1.0V. A logic high is 2.5V to 100V. The maximum sink current at the on/off terminal (Pin 3) during a logic low is -100uA. The maximum allowable leakage current of a switch connected to the on/off terminal (Pin 3) at logic high (2.5V to 100V) is 5uA.
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.
Output Voltage Trim
Output voltage trim allows the user to increase or decrease the output voltage set point of a module. The output voltage can be adjusted by placing an external resistor (Radj) between the Trim and +Vout or -Vout terminals. By adjusting Radj, the output voltage can be change by {10% of the nominal output voltage. REV:0 2005/04
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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 33uF for the 12V input devices and a 10uF for the 24V and 48V devices.
+ DC Power Source + Cin -Vin -Out +Vin DC / DC Converter +Out Load
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
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
Maximum Capacitive Load
The MKW5000 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 680uF maximum capacitive load for 12V & 15V outputs and 6800uF capacitive load for the other outputs. The maximum capacitance can be found in the data sheet.
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Mechanical Dimensions
25.4 [1.0] 15.24 [0.6] 10.16 [0.4]
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
10.20 [0.4] 5.08 [0.2]
6
5
4
10.16 [0.4] 20.32 [0.8]
Tolerance
Millimeters X.X{0.25 X.XX{0.13 {0.05
45.72 [1.8]
50.80 [2.0]
1.0[0.04]
3
2
1
Inches X.XX{0.01 X.XXX{0.005 {0.002
Pin
Pin Connections
Pin 1 2 3 4 5 6 Function +Vin -Vin Remote On/Off +Vout -Vout Trim
Physical Characteristics
50.8*25.4*10.2 mm 2.0*1.0*0.4 inches
Case Size
:
Case Material
:
Aluminum Anodizing Treatment in Black
32g
Weight
:
The MKW5000 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.
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