Minmax MKW20M Fully regulated output voltage Datasheet

®
MKW20M SERIES
DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety
FEATURES
►Industrial Standard 2" X 1" Package
►Wide 2:1 Input Voltage Range
►Fully Regulated Output Voltage
►I/O Isolation 4200VAC with Reinforced Insulation, rated for
300VAC Working Voltage
►Low Leakage Current < 5µA
►Operating Temp. Range -40℃ to +80℃
►No Min. Load Requirement
►Overload/Voltage and Short Circuit Protection
►Conducted EMI meets EN55022 Class A & FCC Level A
►UL/cUL/IEC/EN 60950-1 Safety Approval
►Medical Safety meets 2xMOPP per 3rd Edition of IEC/EN 60601-1
& ANSI/AAMI ES60601-1(Pending)
PRODUCT OVERVIEW
The MINMAX MKW20M series is a new range of high performance 20W isolated dc-dc converter in a compact 2"x1" package which specifically design for
medical applications. The I/O isolation is specified for 4200VACrms with reinforced insulation, which rated for 300VAC working voltage. All 15 models
available for 12, 24, 48VDC with wide 2:1 input voltage range and tight output regulation. Further features include over current, short circuit protection, no
min. load requirement and EMI meets EN55022 class A. The MKW20M series offer a economical solution for demanding applications in industrial and
medical instrumentation requesting a certified supplementary or reinforced insulation system to comply with industrial or latest medical safety standards.
Model Selection Guide
Model
Input
Output
Number
Voltage
Voltage
(Range)
VDC
MKW20-12S05M
MKW20-12S051M
MKW20-12S12M
MKW20-12D12M
MKW20-12D15M
MKW20-24S05M
MKW20-24S051M
MKW20-24S12M
MKW20-24D12M
MKW20-24D15M
MKW20-48S05M
MKW20-48S051M
MKW20-48S12M
MKW20-48D12M
MKW20-48D15M
VDC
5
5.1
12
±12
±15
5
5.1
12
±12
±15
5
5.1
12
±12
±15
12
(9 ~ 18)
24
(18 ~ 36)
48
(36 ~ 75)
Output Current
Input Current
Reflected
Over
Max. capacitive
Ripple
Voltage
Load
Max.
@Max. Load
@No Load
Current
Protection
mA
4000
4000
1670
±840
±670
4000
4000
1670
±840
±670
4000
4000
1670
±840
±670
mA(typ.)
1938
1977
1876
1888
1882
958
977
938
933
941
473
483
469
477
471
mA (typ.)
mA(typ.)
VDC
6.2
6.2
15
±15
±18
6.2
6.2
15
±15
±18
6.2
6.2
15
±15
±18
20
100
15
50
10
30
Efficiency
(typ.)
@Max. Load
μF
6800
1160
590#
380#
6800
1160
590#
380#
6800
1160
590#
380#
%
86
86
89
89
89
87
87
89
90
89
88
88
89
88
89
# For each output
Input Specifications
Parameter
Input Surge Voltage (100 ms max.)
Start-Up Threshold Voltage
Under Voltage Shutdown
Start Up Time
Input Filter
Power Up
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Model
12V Input Models
24V Input Models
48V Input Models
Min.
-0.7
-0.7
-0.7
12V Input Models
24V Input Models
48V Input Models
12V Input Models
24V Input Models
48V Input Models
Nominal Vin and Constant Resistive Load
All Models
---------------
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Typ.
Max.
25
--50
--100
----9
--18
--36
7.5
--15
--33
----30
Internal Pi Type
Unit
VDC
ms
®
MKW20M SERIES
DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety
Output Specifications
Parameter
Output Voltage Setting Accuracy
Output Voltage Balance
Line Regulation
Conditions
Min.
Typ.
----Dual Output, Balanced Loads
----Vin=Min. to Max. @Full Load
----Single Output
----Io=0% to 100%
Dual Output
----No minimum Load Requirement
0-20 MHz
5V & 5.1Vo
Measured with a
--50
Bandwidth
12V, ±12V, ±15Vo
MLCC : 4.7uF
--100
----25% Load Step Change(2)
--±3
----Hiccup
--150
Hiccup Mode 0.7 Hz typ. Automatic Recovery
Load Regulation
Minimum Load
Ripple & Noise
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Over Load Protection
Short Circuit Protection
Max.
±1.0
±2.0
±0.5
±0.5
±1.0
Unit
%Vnom.
%
%
%
%
----300
±5
±0.02
---
mV P-P
mV P-P
μsec
%
%/℃
%
Isolation, Safety Standards
Parameter
I/O Isolation Voltage
Leakage Current
I/O Isolation Resistance
I/O Isolation Capacitance
Conditions
Min.
Typ.
Max.
Reinforced Insulation, Rated For 60 Seconds
4200
----240VAC, 60Hz
----5
500 VDC
10
----100KHz, 1V
----60
UL/cUL60950-1, CSA C22.2 No. 60950-1
ANSI/AAMI ES60601-1, CAN/CSA-C22.2 No. 60601-1
IEC/EN 60950-1, IEC/EN 60601-1 3rd Edition 2xMOPP
IEC60950-1 CB report, UL/cUL 60950-1 certificate
IEC 60601-1 3rd Edition CB Report, ANSI/AAMI ES60601-1 2xMOPP certificate
Safety Standards
Approvals(Pending)
Unit
VACrms
μA
GΩ
pF
General Specifications
Parameter
Switching Frequency
MTBF(calculated)
Conditions
MIL-HDBK-217F@25℃, Ground Benign
Min.
--TBD
Typ.
285
---
Max.
-----
Unit
KHz
Hours
Environmental Specifications
Parameter
Operating Ambient Temperature Range
Natural Convection (6)
Nominal Vin, Load 100% Inom.
(for Power Derating see relative Derating Curves)
Thermal Impedance
Case Temperature
Storage Temperature Range
Humidity (non condensing)
Altitude
Cooling
Lead Temperature (1.5mm from case for 10Sec.)
Conditions/Models
MKW20-24D12M
MKW20-12S12M, MKW20-12D12M, MKW20-12D15M
MKW20-24S12M, MKW20-24D15M, MKW20-48S12M
MKW20-48D15M
MKW20-48S05M, MKW20-48S051M, MKW20-48D12M
MKW20-24S05M, MKW20-24S051M
MKW20-12S05M, MKW20-12S051M
Natural Convection
Min.
Max.
66
Unit
62
℃
-40
13.0
---50
-----
58
55
51
--+95
+125
95
4000
℃/W
℃
℃
% rel. H
m
---
260
℃
Natural Convection
EMC Specifications
Parameter
EMI
Conduction
EN60601-1-2, EN55024
ESD
Radiated immunity
Fast transient (5)
Surge (5)
Conducted immunity
EMS
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Standards & Level
EN55011, EN55022, FCC part 15
EN61000-4-2 Air ± 8kV , Contact ± 6kV
EN61000-4-3 10V/m
EN61000-4-4 ±2kV
EN61000-4-5 ±1kV
EN61000-4-6 10Vrms
Performance
Class A
A
A
A
A
A
®
MKW20M SERIES
DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety
Power Derating Curve
100
100
80
80
Natural
Convection
20LFM
60
60
40
40
20
20
0
0
~
-40
Natural
Convection
20LFM
0
20
40
60
80
100
110
~
-40
0
20
40
60
100
80
Natural
Convection
20LFM
40
20
0
~
-40
0
20
40
60
80
100
110
Ambient Temperature C
MKW20-48S05M, MKW20-48S051M, MKW20-48D12M
MKW20-24S05M, MKW20-24S051M
MKW20-12S05M, MKW20-12S051M
Notes
1
Specifications typical at Ta=+25℃, resistive load, nominal input voltage and 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
We recommend to protect the converter by a slow blow fuse in the input supply line.
4
Other input and output voltage may be available, please contact factory.
5
To meet EN61000-4-4 & EN61000-4-5 an external capacitor across the input pins is required.Suggested capacitor:TBD
6
That “natural convection” is about 20LFM but is not equal to still air (0 LFM).
7
Specifications are subject to change without notice.
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100
110
MKW20-12S12M, MKW20-12D12M, MKW20-12D15M,
MKW20-24S12M, MKW20-24D15M, MKW20-48S12M, MKW20-48D15M
MKW20-24D12M
60
80
Ambient Temperature C
Ambient Temperature C
®
MKW20M SERIES
DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety
Package Specifications
Mechanical Dimensions
Pin Connections
5.08
[0.20]
5.08
[0.20]
Bottom View
5
4
Pin
Single Output
Dual Output
1
+Vin
+Vin
2
-Vin
-Vin
3
+Vout
+Vout
4
No Pin
Common
5
-Vout
-Vout
50.8 [2.00]
1.00 [ 0.04]
1
45.72 [1.80]
2
12.0
[0.47]
►All
3
dimensions in mm (inches)
►Tolerance: X.X±0.5
10.16
[0.40]
2.54
[0.10]
10.16
[0.40]
25.4 [1.00]
Physical Characteristics
Case Size
:
50.8x25.4x12.0mm (2.0x1.0x0.47 inches)
Case Material
:
Non-Conductive Black Plastic (flammability to UL 94V-0 rated)
Pin Material
:
Tinned Copper
Weight
:
TBD
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2015/05/22
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(X.XX±0.02)
X.XX±0.25 ( X.XXX±0.01)
►Pin
diameter  1.0 ±0.05 (0.04±0.002)
®
MKW20M SERIES
DC/DC CONVERTER 20W, Reinforced Insulation, Medical Safety
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
+Vin
Lin
Current
Probe
Cin
+Out
DC / DC
Converter
-Vin
Load
-Out
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
+Out
Copper Strip
Single Output
DC / DC
Converter
-Vin
Cout
-Out
Scope
Resistive
Load
Copper Strip
+Vin
+Out
Copper Strip
Dual Output
DC / DC
Converter
Com.
Copper Strip
-Vin
-Out
Scope
Cout
Cout
Resistive
Load
Scope
Copper Strip
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
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
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.
+
+Vin
DC Power
Source
-
+Out
Single Output
DC / DC
Converter
-Vin
+
Cout
+Vin
DC Power
Source
Load
-Out
-
+Out
Dual Output
Com.
DC / DC
Converter
-Vin
-Out
Cout
Load
Load
Cout
Maximum Capacitive Load
The MKW20M 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
Tel: 886-6-2923150 Fax: 886-6-2923149 E-mail: [email protected]
Minmax Technology Co., Ltd.
2015/05/22
P5
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