The MINMAX MKE20-HI series is a new range of isolated 20W DC/DC converter modules in 2"×1" package which feature a wide input range, fully
regulated output and Ultra-Hi I/O Isolation voltage rated for 8000VDC with reinforced insulation. A very high common mode transient immunity with 15KV/us
qualifies these product for IGBT driver applications. Further features include overload protection, short circuit protection and no min. load requirement as
well. There are 15 Models available for 12, 24 and 48VDC input. These converters offer a cost-effective solution for wind turbine, solar panel, transporation
systems, industrial control equipments and some IGBT driver applications where a very high I/O-isolation is required.
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:TBD
That “natural convection” is about 20LFM but is not equal to still air (0 LFM).
Specifications are subject to change without notice.
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2015/05/22
P2
Page 3 of 5
®
MKE20-HI SERIES
DC/DC CONVERTER 20W,
Ultra-High I/O Isolation, 2"×1" Package
Package Specifications
Mechanical Dimensions
5.08
[0.20]
5.08
[0.20]
12.0
[0.47]
Pin Connections
Pin
1
2
1.00
[
0.04
]
2
1
Single Output
+Vin
-Vin
+Vout
No Pin
-Vout
Dual Output
+Vin
-Vin
+Vout
Common
-Vout
3
4
5
45.72 [1.80]
Bottom View
50.8 [2.00]
5
4
3
►
All
dimensions in mm (inches)
(X.XX±0.02)
X.XX±0.25 ( X.XXX±0.01)
►
Tolerance: X.X±0.5
10.16
[0.40]
10.16
[0.40]
2.54
[0.10]
25.4 [1.00]
►
Pin
diameter
1.0 ±0.05 (0.04±0.002)
Physical Characteristics
Case Size
Case Material
Pin Material
Weight
:
:
:
:
50.8x25.4x12.0mm (2.0x1.0x0.47 inches)
Non-Conductive Black Plastic (flammability to UL 94V-0 rated)
Tinned Copper
TBD
E-mail:sales@minmax.com.tw
Tel:886-6-2923150
2015/05/22
P2
Page 4 of 5
®
MKE20-HI SERIES
DC/DC CONVERTER 20W,
Ultra-High I/O Isolation, 2"×1" Package
Test Setup
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
Current
Probe
+Vin
+Out
Load
DC / DC
Converter
-Vin
-Out
Cin
Peak-to-Peak Output Noise Measurement Test
Use a Cout 4.7μF 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 hiccup mode protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can endure overload for an
unlimited duration.
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.
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 on the input to insure startup. By using a good
quality low Equivalent Series Resistance (ESR < 1.0Ω at 100 kHz) capacitor of a 10μF for the 12V input devices and a 4.7μF for the 24V input devices and a 2.2μF for
the 48V devices, capacitor mounted close to the power module helps ensure stability of the unit.
+
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 4.7μF capacitors at the output.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
+
DC Power
Source
-
-Vin
+Vin
+Out
Dual Output
Com.
DC / DC
Converter
-Out
Cout
Cout
Load
Load
Cout
Load
Maximum Capacitive Load
The MKE20-HI series has limitation of maximum connected capacitance on the output. The power module may operate in current limiting mode during start-up,
affecting the ramp-up and the startup time. Connect capacitors at the point of load for best performance. 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 95℃. 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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