MIW4100 Series
5-6W, Ultra-Wide Input Range DIP, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 83%
1500VDC Isolation
MTBF > 1,000,000 Hours
4:1 Wide Input Range
Low Cost
Complies with EN55022 Class A
Temperature Performance -40] to +71]
Industry Standard Pinout
UL 94V-0 Package Material
Internal SMD Construction
MIW4100-Series power modules operate over input
voltage ranges of 9-36VDC and 18-75VDC which provide precisely
regulated output voltages of 3.3V, 5V, 12V, 15V, {5V, {12V and
{15VDC.
The -40] 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.
The modules have a maximum power rating of 6W and a typical
full-load efficiency of 83%, continuous short circuit, EN55022 Class
A conducted noise compliance minimize design-in time, cost and
eliminate the need for external filtering.
I/O Isolation
EN55022
Wide Range
$
Low Cost
High
Power
Density
More Power
1500
VDC
EMI
4:1
Block Diagram
Single Output
Dual Output
+Vin
LC
Filter
+Vo
+Vin
LC
Filter
+Vo
Com.
-Vo
PFM
Isolation
Ref.Amp
PFM
Isolation
Ref.Amp
-Vo
-Vin
-Vin
MIW4100 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Reflected
Ripple
Current
mA (Typ.)
Efficiency
VDC
MIW4121
MIW4122
MIW4123
MIW4124
MIW4125
MIW4126
MIW4127
MIW4131
MIW4132
MIW4133
MIW4134
MIW4135
MIW4136
MIW4137
48
( 18 ~ 75 )
24
( 9 ~ 36 )
VDC
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
Max.
mA
1200
1000
500
400
{500
{250
{200
1200
1000
500
400
{500
{250
{200
Min.
mA
120
100
50
40
{50
{25
{20
120
100
50
40
{50
{25
{20
@Max. Load
mA (Typ.)
220
267
301
305
267
301
305
110
134
151
152
134
151
152
@No Load
mA (Typ.)
@Max. Load
% (Typ.)
75
78
83
20
20
82
78
83
82
75
78
83
10
15
82
78
83
82
Absolute Maximum Ratings
Parameter
Input Surge Voltage
( 1000 mS )
Internal Power Dissipation
24VDC Input Models
48VDC Input Models
Min.
-0.7
-0.7
---
---
Max.
50
100
260
2,500
Unit
VDC
VDC
]
mW
Notes :
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 75%
to 100%.
3. Ripple & Noise measurement bandwidth is 0-20
MHz.
4. These power converters require a minimum output
loading to maintain specified regulation.
Lead Temperature (1.5mm from case for 10 Sec.)
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conducted EMI
Conditions
Ambient
Case
Min.
-40
-40
-40
---
Free-Air Convection
EN55022 Class A
Max.
+71
+95
+125
95
Unit
]
]
]
%
5. Operation under no-load conditions will not
damage these modules; however, they may not
meet all specifications listed.
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.
MIW4100 Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shutdown
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
All Models
Model
24V Input Models
48V Input Models
24V Input Models
48V Input Models
Min.
7
14
---
---
---
---
Typ.
8
16
---
---
---
---
Pi Filter
Max.
9
18
8.5
16
1
3000
A
mW
VDC
Unit
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Power Protection
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
25% Load Step Change
Over Line, Load & Temp.
Dual Output, Balanced Loads
Vin=Min. to Max.
Io=10% to 100%
Conditions
Min.
---
---
---
---
---
---
---
110
---
---
---
Continuous
Typ.
{0.5
{0.5
{0.1
{0.5
50
---
---
250
300
{3
{0.01
Max.
{2.0
{2.0
{0.5
{1.0
80
100
15
350
500
---
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms
%
uS
%
%/]
General Specifications
Parameter
Isolation Voltage
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Conditions
60 Seconds
Flash Tested for 1 Second
500VDC
100KHz,1V
Min.
1500
1650
1000
---
---
1000
Typ.
---
---
---
350
450
---
Max.
---
---
---
550
---
---
Unit
VDC
VDC
M[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
# For each output
3.3V
470
5V
470
12V
100
15V
100
{5V #
100
{12V #
100
{15V #
100
Unit
uF
MIW4100 Series
Input Fuse Selection Guide
24V Input Models
1000mA Slow-Blow type
48V Input Models
750mA Slow-Blow type
Input Voltage Transient Rating
150
140
130
120
110
100
Vin ( VDC )
90
80
70
60
50
40
30
20
10
0
10uS
100uS
1mS
10mS
100mS
24VDC Input Models
48VDC Input Models
100
80
Output Power (%)
100LFM
Natural
convection
400LFM
200LFM
60
40
20
0
-40
〜
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
MIW4100 Series
Test Configurations
Input Reflected-Ripple Current Test Setup
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.
To Oscilloscope
+
Battery
+
Lin
Current
Probe
+Vin
+Out
Load
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 recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 4.7uF for the 24V input devices and a
2.2uF for the 48V devices.
DC / DC
Converter
-Vin
-Out
Cin
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.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Scope
Resistive
Load
+
DC Power
Source
-
+
Cin
+Vin
DC / DC
Converter
-Vin
+Out
Load
-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 3.3uF
capacitors at the output.
+
DC Power
Source
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
-Out
Design & Feature Considerations
Maximum Capacitive Load
The MIW4100 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.
Cout
Load
-
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC Com.
Converter
Cout
Load
-Vin
-Out
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