The MINMAX MIWI03 series is a range of high performance 3W dc-dc converter modules, designed as a cost optimized replacement for the highly popular
MIW2300 series.The converter features ultrawide 4:1 input ranges and tight output voltage regulation.Excellent efficiency allows an operating temperature
up to +70°C at full load.The product comes in a DIP-24 plastic package with industry standard footprint.
Typical applications for these economical priced dc-dc converters are industrial electronics,instrumentation or communication equipment.
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%
We recommend to protect the converter by a slow blow fuse in the input supply line.
Other input and output voltage may be available, please contact factory.
To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required. Suggested capacitor: 200μF/100V
That “natural convection” is about 20LFM but is not equal to still air (0 LFM).
Specifications are subject to change without notice.
Package Specifications
Mechanical Dimensions
10.2
[0.40]
Pin Connections
Pin
Single Output
2
-Vin
3
9
11
14
16
22
23
-Vin
No Pin
NC
+Vout
-Vout
+Vin
+Vin
NC: No Connection
Dual Output
-Vin
-Vin
Common
-Vout
+Vout
Common
+Vin
+Vin
0.50 [0.02]
2
3
9
11
15.22 [0.60]
Bottom View
23
22
16
14
20.3 [0.80]
4.5
[0.18]
►All
dimensions in mm (inches)
►Tolerance:
X.X±0.5 (X.XX±0.02)
X.XX±0.25 ( X.XXX±0.01)
►Pin
diameter
0.5 ±0.05 (0.02±0.002)
2.54
[0.10]
15.24 [0.60]
31.8[1.25]
[0.20][0.18]
5.08
4.5
Physical Characteristics
Case Size
Case Material
Pin Material
Weight
:
:
:
:
31.8x20.3x10.2mm (1.25x0.80x0.40 inches)
Non-Conductive Black Plastic (flammability to UL 94V-0 rated)
Copper Alloy with Gold Plate Over Nickel Subplate
12.8g
Order Code Table
Standard
MIWI03-24S033
MIWI03-24S05
MIWI03-24S12
MIWI03-24S15
MIWI03-24S24
MIWI03-24D05
MIWI03-24D12
MIWI03-24D15
MIWI03-48S033
MIWI03-48S05
MIWI03-48S12
MIWI03-48S15
MIWI03-48S24
MIWI03-48D05
MIWI03-48D12
MIWI03-48D15
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
3KVDC isolation
MIWI03-24S033H
MIWI03-24S05H
MIWI03-24S12H
MIWI03-24S15H
MIWI03-24S24H
MIWI03-24D05H
MIWI03-24D12H
MIWI03-24D15H
MIWI03-48S033H
MIWI03-48S05H
MIWI03-48S12H
MIWI03-48S15H
MIWI03-48S24H
MIWI03-48D05H
MIWI03-48D12H
MIWI03-48D15H
2015/05/22 REV:2
Page 3 of 4
2.54
[0.10]
®
Test Setup
MIWI03 SERIES
DC/DC CONVERTER 3W,
DIP-Package
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor Lin (4.7μH) and Cin (220μF, ESR < 1.0Ω 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
+Vin
Current
Probe
+Out
Load
DC / DC
Converter
-Vin
-Out
Cin
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
Copper Strip
Resistive
Scope
Load
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
-Out
Copper Strip
Cout
Copper Strip
Cout
Copper Strip
Scope
Scope
Resistive
Load
Technical Notes
Overload 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 <
1.0Ω at 100 KHz) capacitor of a 4.7μF for the 24V input devices and a 2.2μF for the 48V devices.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
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
Maximum Capacitive Load
The MIWI03 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.
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 100℃.
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
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