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MCW1000 Series
2W, Wide Input Range SIP, Single Output DC/DC Converters
Key Features
High Efficiency up to 81% 1000VDC Isolation MTBF > 1,000,000 Hours 2:1 Wide Input Range Low Cost Remote On/Off Control Low Ripple and Noise Temperature Performance -40] to +85] UL 94V-0 Package Material Internal SMD Construction
Minmax's MCW1000-Series power modules are low-profile dc-dc converters that operate over input voltage ranges of 4.5-9VDC, 9-18VDC, 18-36VDC and 36-75VDC which provide precisely regulated single output voltages of 3.3V, 5V and 12VDC. The -40] to +85] operating temperature range makes it ideal for 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. The modules have a maximum power rating of 2W and a typical full-load efficiency of 81%, continuous short circuit, 30mV output ripple, built-in filtering for both input and output minimize the need for external filtering.
1000 VDC
Low Noise
I/O Isolation
Remote on/off
$
Low Profile Low Cost
2:1
Wide Range
Block Diagram
+Vin
+Vo
-Vo
-Vin On/Off PFM Isolation Ref.Amp
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MINMAX
REV:0 2005/04
MCW1000 Series
Model Selection Guide
Model Number Input Voltage VDC MCW1011 MCW1012 MCW1013 MCW1021 MCW1022 MCW1023 MCW1031 MCW1032 MCW1033 MCW1041 MCW1042 MCW1043 5 ( 4.5 ~ 9 ) 12 ( 9 ~ 18 ) 24 ( 18 ~ 36 ) 48 ( 36 ~ 75 ) Output Voltage VDC 3.3 5 12 3.3 5 12 3.3 5 12 3.3 5 12 Output Current Max. mA 500 400 167 500 400 167 500 400 167 500 400 167 Min. mA 125 100 42 125 100 42 125 100 42 125 100 42 Input Current @Max. Load mA (Typ.) 471 548 534 184 217 209 96 109 103 49 57 53 @No Load mA (Typ.) 40 Reflected Ripple Current mA (Typ.) 400 Efficiency @Max. Load % (Typ.) 70 73 75 73 77 80 72 77 81 71 73 79
20
300
10
200
8
500
Absolute Maximum Ratings
Parameter 5VDC Input Models 12VDC Input Models Input Surge Voltage ( 1000 mS ) 24VDC Input Models 48VDC Input Models Lead Temperature (1.5mm from case for 10 Sec.) Internal Power Dissipation Min. -0.7 -0.7 -0.7 -0.7 ----Max. 15 25 50 100 260 3500 Unit VDC 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. 5. Operation under no-load conditions will not damage these modules; however, they may not meet all specifications listed. Min. Max. -40 +85 -40 +90 -55 +105 --95 Free-Air Convection 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. Specifications subject to change without notice.
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 Conditions Ambient Case
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MINMAX
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MCW1000 Series
Input Specifications
Parameter Start Voltage Model 5V Input Models 12V Input Models 24V Input Models 48V Input Models Under Voltage Shutdown 5V Input Models 12V Input Models 24V Input Models 48V Input Models Reverse Polarity Input Current Short Circuit Input Power Input Filter All Models Min. 3.5 4.5 8 16 ------------Typ. 4 7 12 24 3.5 6.5 11 22 ----Max. 4.5 9 18 36 4 8.5 17 34 1 1500 A mW VDC Unit
Capacitor type
Output Specifications
Parameter Output Voltage Accuracy 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. Vin=Min. to Max. Io=25% to 100% Conditions Min. ------------120 ------Continuous Typ. {1 {0.3 {0.5 30 ------100 {3 {0.01 Max. {2 {0.5 {0.75 50 75 15 --300 {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. 1000 1100 1000 --100 1000 Typ. ------65 300 --Max. ------120 650 --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 = 0V Vin-RC = 5.0V Conditions Min. 2.7 ------Typ. --0.1 ----Max. 15 0.2 -0.4 1 Unit VDC mA mA mA Under 0.6 VDC or Open Circuit, drops down to 0VDC by 2mV/]
Referenced to Negative Input
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MINMAX
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MCW1000 Series
Capacitive Load
Models by Vout Maximum Capacitive Load 3.3V 2200 5V 1000 12V 170 Unit uF
Input Fuse Selection Guide
5V Input Models 1500mA Slow - Blow Type 12V Input Models 700mA Slow - Blow Type 24V Input Models 350mA Slow - Blow Type 48V Input Models 135mA 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 5VDC Input Models 12VDC Input Models 24VDC Input Models 48VDC Input Models
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MINMAX
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MCW1000 Series
90
90 80
80 Efficiency (%)
70
Efficiency(%)
70 60 50 40
60 50 Low Nom Input Voltage (V) High
30
10
20
40
60
80
100
Load Current(%)
Efficiency vs Input Voltage
Efficiency vs Output Load
100 80 Output Power (%) 100LFM
400LFM
60 Natural convection 40
200LFM
20 0 -40
50 60 70 80 ] 90 100 110
Ambient Temperature
Derating Curve
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MINMAX
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MCW1000 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
Maximum Capacitive Load
The MCW1000 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. The maximum capacitance can be found in the data sheet.
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 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
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 8.2uF for the 5V input devices, a 3.3uF for the 12V input devices and a 1.5uF for the 24V and 48V devices.
+ +Vin + Cin -Vin -Out DC / DC Converter +Out 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. 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 2.7V to 15V. A logic high is under 0.6 VDC or open circuit, drops down to 0VDC by 2mV/] 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 (under 0.6VDC or open circuit) is -0.4mA.
DC Power Source -
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 3.3uF capacitors at the output.
+ DC Power Source -
+Vin Single Output DC / DC Converter -Vin
+Out
Cout -Out
Load
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MINMAX
6
MCW1000 Series
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 90C. 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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MINMAX
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MCW1000 Series
Mechanical Dimensions
21.8 [0.86]
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
0.5[0.02]
2.0[0.08]
5.08 [0.200]
2.54[0.100]
4.0[0.16] 3.0 [0.12] 9.2 [0.36]
1
2
3
5
6
7
8
0.5[0.02]
Tolerance
Millimeters X.X{0.25 X.XX{0.13
Inches X.XX{0.01 X.XXX{0.005 {0.002
Pin
{0.05
Pin Connections
Pin 1 2 3 5 6 7 8 Function -Vin +Vin Remote On/Off NC +Vout -Vout NC
0.25[0.01]
11.2[0.44]
Physical Characteristics
21.8*9.2*11.2mm 0.86*0.36*0.44inches Non-Conductive Black Plastic 4.8g UL94V-0
Case Size
: : : :
Case Material Weight Flammability
NC: No Connection
The MCW1000 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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