The MINMAX MCWI03 series is a range of isolated 3W DC/DC converter modules featuring fully regulated output and ultra-wide 4:1 input voltage ranges.
The product comes in a SIP-8 package with a very small footprint occupying only 2.0 cm2 (0.3 square in.) on the PCB.
An excellent efficiency allows an operating temperature range of -40°C to +85°C. Further features include remote On/Off control and over load protection.
The very compact dimensions of these DC/DC converters make them an ideal solution for many space critical applications in battery-powered equipment
and instrumentation.
Model Selection Guide
Model
Number
Input
Voltage
(Range)
VDC
Output
Voltage
VDC
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
3.3
5
12
15
±5
±12
±15
Output Current
Max.
Min.
mA
175
150
63
50
±75
±31
±25
175
150
63
50
±75
±31
±25
175
150
63
50
±75
±31
±25
Input Current
@Max. Load
mA(typ.)
260
320
313
313
313
313
313
128
156
154
154
158
156
154
65
79
79
79
79
79
78
@No Load
mA(typ.)
Max. capacitive
Load
µF
1760
1000
170
110
470 #
100 #
47 #
1760
1000
170
110
470 #
100 #
47 #
1760
1000
170
110
470 #
100 #
47 #
MCWI03-12S033
MCWI03-12S05
MCWI03-12S12
MCWI03-12S15
MCWI03-12D05
MCWI03-12D12
MCWI03-12D15
MCWI03-24S033
MCWI03-24S05
MCWI03-24S12
MCWI03-24S15
MCWI03-24D05
MCWI03-24D12
MCWI03-24D15
MCWI03-48S033
MCWI03-48S05
MCWI03-48S12
MCWI03-48S15
MCWI03-48D05
MCWI03-48D12
MCWI03-48D15
12
(4.5 ~ 18)
24
(9 ~ 36)
48
(18 ~ 75)
mA
700
600
250
200
±300
±125
±100
700
600
250
200
±300
±125
±100
700
600
250
200
±300
±125
±100
@Max. Load
%
74
78
80
80
80
80
80
75
80
81
81
79
80
81
74
79
79
79
79
79
80
Efficiency
(typ.)
60
25
15
# For each output
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2013/01/30 REV:5
Page 1 of 4
®
Input Specifications
DC/DC CONVERTER 3W,
SIP-Package
Parameter
Model
12V Input Models
24V Input Models
48V Input Models
12V Input Models
24V Input Models
48V Input Models
12V Input Models
24V Input Models
48V Input Models
All Models
Min.
-0.7
-0.7
-0.7
3
4.5
8.5
---
---
---
---
---
---
Conditions
At 50% Load and Nominal Vin
Dual Output, Balanced Loads
Vin=Min. to Max.
Io=25% to 100%
25% Load Step Change
Min.
---
---
---
---
---
---
---
---
Continuous
Typ.
Max.
---
25
---
50
---
100
4
4.5
6
9
12
18
3.5
4
---
8
---
16
---
1
---
2500
Capacitor type
---
2600
Typ.
---
±0.5
±0.3
±0.5
50
300
±3
---
Max.
±1.0
±2.0
±0.5
±1.0
75
500
±5
±0.02
Unit
MCWI03 SERIES
Input Surge Voltage (1 sec. max.)
Start-Up Threshold Voltage
Under Voltage Shutdown
Reverse Polarity Input Current
Short Circuit Input Power
Internal Filter Type
Internal Power Dissipation
VDC
A
mW
mW
Unit
%Vom.
%
%
%
mV
P-P
µsec
%
%/℃
Output Specifications
Parameter
Output Voltage Setting Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Short Circuit Protection
General Specifications
Parameter
I/O Isolation Voltage (rated)
I/O Isolation Resistance
I/O Isolation Capacitance
Switching Frequency
MTBF (calculated)
Safety Approvals(pending)
Min.
Typ.
1600
---
1000
---
---
200
---
350
MIL-HDBK-217F@25℃, Ground Benign
800,000
---
CSA 60950-1 recognition,IEC/EN 60950-1(CB-scheme)
24V Input Models
700mA Slow-Blow Type
Conditions
60 Seconds
500 VDC
100KHz, 1V
Max.
---
---
---
---
---
Unit
VDC
M
pF
KHz
Hours
Input Fuse
12V Input Models
1500mA Slow-Blow Type
Parameter
48V Input Models
350mA Slow-Blow Type
Unit
VDC
mA
mA
mA
Remote On/Off Control
Converter On
Converter Off
Device Standby Input Current
Control Input Current ( on )
Control Input Current ( off )
Control Common
Conditions
Min.
Typ.
Max.
Under 0.6 VDC or Open Circuit, drops down to 0VDC by 2mV/℃
2.7
---
15
---
1
2.5
Vin = 0V
---
---
1
Vin = 5.0V
---
---
1
Referenced to Negative Input
Conditions
Natural Convection
Min.
-40
---
-55
---
Free-Air convection
---
Max.
+85
105
+125
95
260
Environmental Specifications
Parameter
Operating Ambient Temperature Range (See Power Derating Curve)
Case Temperature
Storage Temperature Range
Humidity (non condensing)
Cooling
Lead Temperature (1.5mm from case for 10Sec.)
Unit
℃
℃
℃
% rel. H
℃
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2013/01/30 REV:5
Page 2 of 4
®
Power Derating Curve
DC/DC CONVERTER 3W,
SIP-Package
MCWI03 SERIES
Notes
1
2
3
4
5
6
7
8
Ripple & Noise measurement bandwidth is 0-20 MHz measured with a 1µF M/C.
These power converters require a minimum output loading to maintain specified regulation, operation under no-load conditions will not damage these
modules; however, they may not meet all specifications listed.
All DC/DC converters should be externally fused at the front end for protection.
Other input and output voltage may be available, please contact factory.
That “natural convection” is about 20LFM but is not equal to still air (0 LFM).
Specifications are subject to change without notice.
Specifications typical at Ta=+25℃, resistive load, nominal input voltage and rated output current unless otherwise noted.
Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
Package Specifications
Mechanical Dimensions
21.8 [0.86]
Output Power (%)
0.5
[0.02]
2.0
[0.08]
Pin Connections
Pin
Single Output
1
-Vin
2
+Vin
3
Remote On/Off
5
NC
6
+Vout
7
-Vout
8
NC
NC: No Connection
Dual Output
-Vin
+Vin
Remote On/Off
NC
+Vout
Common
-Vout
2X2.54 5.08
[2X0.10] [0.20]
3X2.54
[3X0.10]
20.8 [0.82]
0.25 [0.01]
2.7 [0.11]
9.3 [0.37]
Bottom View
1
2
3
5
6
7
8
3.2
[0.13]
11.2 [0.44]
0.5 [0.02]
►
All dimensions in mm (inches)
►
Tolerance: X.X±0.5 (X.XX±0.02)
0.50
[0.02]
X.XX±0.25 ( X.XXX±0.01)
►
Pins ±0.1(±0.004)
Physical Characteristics
Case Size
Case Material
Pin Material
Weight
:
:
:
:
21.8x9.3x11.2 mm (0.86x0.37x0.44 inches)
Non-Conductive Black Plastic (flammability to UL 94V-0 rated)
Alloy 42
4.8g
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2013/01/30 REV:5
Page 3 of 4
®
Test Setup
DC/DC CONVERTER 3W,
SIP-Package
MCWI03 SERIES
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47µF 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
Resistive
Load
+Vin
Scope
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
-Out
Copper Strip
Cout
Copper Strip
Cout
Copper Strip
330pF
Scope
Scope
Resistive
Load
Copper Strip
330pF
Remote On/Off
Negative logic remote on/off turns the module off during a logic high voltage on the remote on/off pin, and on 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 high is 2.7V to 15V. A logic low 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 1mA.
Maximum Capacitive Load
The MCWI03 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.
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 commended to use a good quality low Equivalent Series Resistance (ESR < 1.0
at 100 KHz) capacitor of a 3.3µF for the 12V input devices and a 1.5µF for the 24V and 48V devices.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
Technical Notes
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 3.3µF capacitors at the output.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC Com.
Converter
Cout
Cout
Load
Load
Cout
Load
-Vin
-Out
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 105℃. The derating curves are determined from
measurements obtained in a test setup.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
18, Sin Sin Road, An-Ping Industrial District, Tainan 702, Taiwan
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