TOTAL
POWER
INT'L
MIW1200 Series
2 〜 3 Watts 2 :1 Wide Input Range DC/DC Converters
Key Features
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High Efficiency up to 86%
2:1 Input Range
I/O Isolation 1500VDC
Industry Standard Pinout
SMT Technology
Short Circuit Protection
EMI Complies With EN55022 Class A
MTBF > 1,000,000 Hours
MIW1200-Series power modules are low-profile
dc-dc converters that operate over input voltage ranges of
9-18VDC, 18-36VDC and 36-75VDC and provide precisely
regulated output voltages of 5V, 12V, 15V, {12V and {15V.
$
The -25] to +71] 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.
Low Cost
1500
VDC
The modules have a maximum power rating of 3W and a typical
full-load efficiency of 86%, continuous short circuit, 60mA output
ripple, EN55022 level A conducted noise compliance minimize
design-in time, cost and eliminate the need for external components.
I/O Isolation
EMI
2:1
EN55022
Wide Range
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
-Vin
PFM
Isolation
Ref.Amp
-Vo
-Vin
PFM
Isolation
Ref.Amp
MIW1200 Series
Model Selection Guide
Model
Number
MIW1221
MIW1222
MIW1223
MIW1224
MIW1225
MIW1226
MIW1227
MIW1231
MIW1232
MIW1233
MIW1234
MIW1235
MIW1236
MIW1237
MIW1241
MIW1242
MIW1243
MIW1244
MIW1245
MIW1246
MIW1247
Input
Voltage
Output
Voltage
VDC
VDC
Max.
mA
Min.
mA
@Max. Load
mA (Typ.)
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
600
500
250
200
{250
{125
{100
600
500
250
200
{250
{125
{100
600
500
250
200
{250
{125
{100
60
50
25
20
{25
{12.5
{10
60
50
25
20
{25
{12.5
{10
60
50
25
20
{25
{12.5
{10
220
267
305
309
274
313
321
109
130
150
149
134
152
152
53
64
74
73
65
74
75
12
( 9 ~ 18 )
24
( 18 ~ 36 )
48
( 36 ~ 75 )
Output Current
Input Current
@No Load
mA (Typ.)
mA (Typ.)
30
15
8
15
4
15
Efficiency
@Max. Load
% (Typ.)
75
78
82
81
76
80
78
76
80
83
84
78
82
82
78
82
85
86
80
84
83
Note :
Absolute Maximum Ratings
Parameter
12VDC Input Models
Input Surge Voltage
24VDC Input Models
( 1000 mS )
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
-0.7
-----
Max.
25
50
100
260
2,500
Unit
VDC
VDC
VDC
]
mW
Exceeding these values can damage the module. These are not continuous
operating ratings.
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 50%
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 devices; however they may not
meet all listed specifications.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conducted EMI
Reflected
Ripple
Current
Conditions
Ambient
Case
Min.
Max.
-25
+71
-40
+90
-40
+125
--95
Free-Air Convection
EN55022 Class A
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.
MIW1200 Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shortdown
Model
Min.
12V Input Models
4.5
7
9
24V Input Models
8
12
18
Max.
Unit
48V Input Models
16
24
36
12V Input Models
---
6.5
8.5
24V Input Models
---
11
17
48V Input Models
---
22
34
---
---
1
A
---
1000
2000
mW
Max.
Unit
Reverse Polarity Input Current
All Models
Short Circuit Input Power
Typ.
Input Filter
VDC
Pi Filter
Output Specifications
Parameter
Conditions
Min.
---
{0.5
{1.0
%
Dual Output Balance Load
---
{0.5
{2.0
%
Line Regulation
Vin=Min. to Max.
---
{0.2
{0.5
%
Load Regulation
Io=10% to 100%
---
{0.2
{0.5
%
---
25
50
mV P-P
---
---
75
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms.
Over Power Protection
120
---
---
%
Transient Recovery Time
---
300
500
uS
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line,Load & Temp
50% Load Step Change
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
Typ.
---
{3
{6
%
---
{0.01
{0.02
%/]
Continuous
General Specifications
Parameter
Isolation Voltage
Isolation Test Voltage
Conditions
Min.
Typ.
Max.
Unit
60 Seconds
1500
---
---
VDC
Flash Tested for 1 Second
1650
---
---
VDC
Isolation Resistance
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
350
500
pF
200
300
450
KHz
1000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Capacitive Load
Models by Vout
Maximum Capacitive Load
Note: # For each output .
3.3V
5V
12V
15V
{5V #
{12V #
{15V #
Unit
4000
4000
4000
4000
1000
1000
1000
uF
MIW1200 Series
Input Fuse Selection Guide
12V Input Models
700mA Slow - Blow Type
24V Input Models
48V Input Models
350mA Slow - Blow Type
135mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
48VDC Input Models
110
Vin ( VDC )
100
90
80
24VDC Input Models
70
60
50
40
12VDC Input Models
30
20
10
0
10uS
100uS
1mS
10mS
100mS
100
100
90
90
Efficiency (%)
Efficiency (%)
MIW1200 Series
80
70
60
50
80
70
60
Low
Nom
50
High
Low
Nom
Input Voltage (V)
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency (%)
Efficiency vs Input Voltage ( Single Output )
60
50
50
40
30
30
10
20
40
60
80
100
Load Current (%)
60
100LFM
400LFM
Natural
convection
200LFM
40
20
0
〜
-40
50
60
70
80
Ambient Temperature
Derating Curve
10
20
40
60
80
Efficiency vs Output Load ( Dual Output )
100
80
20
Load Current (%)
Efficiency vs Output Load ( Single Output )
Output Power (%)
60
40
20
High
Input Voltage (V)
90
]
100
110
100
MIW1200 Series
Test Configurations
Overcurrent Protection
Input Reflected-Ripple Current Test Setup
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.
To Oscilloscope
+
+
Battery
+Vin
Lin
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
Load
Input Source Impedance
-Out
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.
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.
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 3.3uF for the 12V input devices and a
1.5uF for the 24V and 48V devices.
+
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
Copper Strip
Cout
DC Power
Source
Resistive
Scope
Load
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
-Out
Output Ripple Reduction
+Vin
+Out
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Copper Strip
Cout
Scope
Cout
Scope
Resistive
Load
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.
+
Design & Feature Considerations
Maximum Capacitive Load
The MIW1200 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.
For optimum performance we recommend 1000uF
maximum capacitive load for dual outputs and 4000uF
capacitive load for single outputs.
The maximum capacitance can be found in the data.
+Vin
+Out
Single Output
DC / DC
Converter
DC Power
Source
Cout
-
-Vin
-Out
+
+Vin
+Out
Dual Output
DC / DC Com.
Converter
DC Power
Source
-
-Vin
-Out
Load
Cout
Load
MIW1200 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 90°C.
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
MIW1200 Series
Mechanical Data
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
10.2 [0.40]
Side
2.5 [0.10]
0.50 [0.020]
9
11
16
14
2 3
Bottom
23 22
Tolerance
Pin
Millimeters
Inches
.X{0.25
.XX{0.01
.XX{0.25
{0.05
.XXX{0.01
{0.002
Pin Connections
Dual Output
20.3 [0.80]
4.5 [0.18]
2.54 [0.100]
15.22 [0.600]
4.5 [0.18]
31.8 [1.25]
Physical Characteristics
Pin
Single Output
Dual Output
2
-Vin
-Vin
3
-Vin
-Vin
9
No Pin
Common
11
NC
-Vout
14
+Vout
+Vout
16
-Vout
Common
22
+Vin
+Vin
23
+Vin
+Vin
31.8*20.3*10.2 mm
Case Size
:
Case Material
:
Non-Conductive Black Plastic
Weight
:
12.2g
Flammability
:
UL94V-0
1.25*0.8*0.4 inches
NC: No Connection
Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical
properties in high humidity environment and over a wide operating temperature range.
The encapsulant and outer shell of the unit have UL94V-0 ratings. The leads are golden plated for better soldering.