TOTAL POWER INT'L
MIW1500 Series
3 Watts 2 :1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
Ÿ
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High Efficiency up to 82%
2:1 Input Range
I/O Isolation 1500VDC
Ÿ
Ÿ
Ÿ
Ÿ
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Industry Standard Pinout
SMT Technology
Short Circuit Protection
EMI Complies With EN55022 Class A
MTBF > 1,000,000 Hours
MIW1500-Series power modules are low-profile
dc-dc converters that operate over input voltage ranges of
4.5-9VDC, 9-18VDC, 18-36VDC and provide precisely regulated
output voltages of 5V, 12V, {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 82%, continuous short circuit, 60mA output
ripple, built-in filtering for both input and output minimizes the need
for external filtering.
I/O Isolation
EMI
2:1
EN55022
Wide Range
Block Diagram
Single Output
Dual Output
+Vo
LC
+Vin Filter
+Vo
LC
+Vin Filter
Com.
-Vo
-Vin
PFM
Isolation
Ref.Amp
-Vo
-Vin
PFM
Isolation
Ref.Amp
TOTAL POWER INT'L
MIW1500 Series
Model Selection Guide
Model
Number
MIW1512
MIW1513
MIW1516
MIW1517
MIW1522
MIW1523
MIW1526
MIW1527
MIW1532
MIW1533
MIW1536
MIW1537
Input
Voltage
Output
Voltage
VDC
VDC
Max.
mA
Min.
mA
5
12
600
250
60
25
833
789
{12
{15
5
12
{125
{100
600
250
{12.5
{10
60
25
779
779
329
313
{12
{15
5
12
{125
{100
600
250
{12.5
{10
60
25
313
313
160
152
{12
{15
{125
{100
{12.5
{10
152
152
5
( 4.5 ~ 9 )
12
( 9 ~ 18 )
24
( 18 ~ 36 )
Output Current
Input Current
@Max. Load @No Load
mA ( T y p . )
mA ( T y p . )
Absolute Maximum Ratings
Reflected
Ripple
Current
mA ( T y p . )
40
100
20
30
5
15
Efficiency
@Max.
% Load
(Typ.)
72
76
77
77
76
80
80
80
78
82
82
82
Note :
Parameter
5VDC Input Models
Input Surge Voltage
12VDC
Input Models
( 1000 mS )
24VDC Input Models
Lead Temperature (1.5mm from case for 10
Sec.)
Internal Power Dissipation
Min.
-0.7
Max.
11
Unit
VDC
-0.7
-0.7
-----
25
50
260
2,500
VDC
VDC
]
mW
Exceeding the absolute maximum ratings of the unit could cause damage.
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
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.
5. Operation at no-load will not damage these
units. However, they may not meet all
specifications.
Environmental Specifications
Parameter
Operating Temperature
Conditions
Ambient
Operating Temperature
Storage Temperature
Humidity
Cooling
Case
Conducted EMI
Min.
-25
Max.
+71
-25
+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.
TOTAL POWER INT'L
MIW1500 Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shutdown
Model
Min.
Typ.
Max.
5V Input Models
3.5
4
4.5
12V Input Models
4.5
7
9
24V Input Models
8
12
18
5V Input Models
---
3.5
4
12V Input Models
---
6.5
8.5
24V Input Models
---
11
17
---
---
1
A
---
1000
2000
mW
Reverse Polarity Input Current
Short Circuit Input Power
All Models
Input Filter
Unit
VDC
Pi Filter
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
---
{0.5
{2.0
%
Dual Output , Balanced Loads
---
{0.5
{2.0
%
Line Regulation
Vin=Min. to Max.
---
{0.2
{0.5
%
Load Regulation
Io=10% to 100%
---
{0.2
{0.5
%
---
45
60
mV P-P
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
---
---
100
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms.
Over Power Protection
120
---
---
%
---
300
500
uS
---
{3
{6
%
---
{0.01
{0.02
%/]
Transient Recovery Time
Transient Response Deviation
Over Line,Load & Temp
25% Load Step Change
Temperature Coefficient
Output Short Circuit
Continuous
General Specifications
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
Parameter
60 Seconds
1500
---
---
VDC
Isolation Voltage Test
Flash Tested for 1 Second
1650
---
---
VDC
Isolation Resistance
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
---
500
pF
---
300
---
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 .
5V
12V
{12V #
{15V #
Unit
470
470
220
220
uF
TOTAL POWER INT'L
MIW1500 Series
Input Fuse Selection Guide
5V Input Models
12V Input Models
1500mA Slow - Blow Type
700mA Slow - Blow Type
24V Input Models
350mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
110
Vin ( VDC )
100
90
80
70
24VDC Input Models
60
50
40
12VDC Input Models
30
20
5VDC Input Models
10
0
10uS
100uS
1mS
10mS
100mS
TOTAL POWER INT'L
MIW1500 Series
100
100
90
Efficiency (%)
Efficiency (%)
90
80
70
80
70
60
60
50
Low
Nom
High
50
Low
Input Voltage (V)
Nom
High
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
40
30
30
20
20
10
20
40
60
80
100
Load Current (%)
100LFM
400LFM
Natural
convection
60
200LFM
40
20
0
∼
-25
50
60
70
80
Ambient Temperature
Derating Curve
20
40
60
80
100
Efficiency vs Output Load ( Dual Output )
100
80
10
Load Current (%)
Efficiency vs Output Load ( Single Output )
Output Power (%)
60
90
]
100
110
TOTAL POWER INT'L
MIW1500 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
+
Lin
+Vin
+Out
DC / DC
Converter
Current
Probe
Load
Cin
-Vin
-Out
Input Source Impedance
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.
+Vin
+Out
Single Output
DC / DC
Converter
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 8.2uF for the 5V input devices, a 3.3uF for
the 12V input devices and a 1.5uF for the 24V devices.
Output Ripple Reduction
+
Copper Strip
Cout
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.
Scope
Resistive
Load
DC Power
Source
-Out
+Vin
+Out
Dual Output
DC / DC
Com.
Converter
-Vin
Copper Strip
Cout
Scope
Resistive
Load
Cout
Scope
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
+Vin
-Vin
-Out
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.
-Out
+
Design & Feature Considerations
Maximum Capacitive Load
The MIW1500 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 220uF
maximum capacitive load for dual outputs and 470uF
capacitive load for single outputs.
The maximum capacitance can be found in the data .
+Vin
Single Output
DC / DC
Converter
DC Power
Source
-
-Vin
+
+Vin
-Vin
Cout
Load
-Out
+Out
Dual Output
DC / DC Com.
Converter
DC Power
Source
-
+Out
-Out
Cout
Load
TOTAL POWER INT'L
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
MIW1500 Series
TOTAL POWER INT'L
MIW1500 Series
Mechanical Dimensions
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
10.2 [0.40]
2.5 [0.10]
Side
4.5 [0.18]
2.54 [0.100]
2 3
9
11
16
14
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
Pin
Dual Output
20.3 [0.80]
0.50 [0.020]
15.22 [0.600]
4.5 [0.18]
31.8 [1.25]
Physical Characteristics
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
Case Size
:
31.8*20.3*10.2 mm
1.25*0.8*0.4 inches
Case Material :
Non-Conductive Black Plastic
Weight
:
12.4g
Flammability
:
UL94V-0
NC: No Connection
The MIW1500 converter is encapsulated in a low thermal resistance molding compound that has excellent resistance/electrical
characteristics over a wide temperature range or in high humidity environments.
The encapsulant and unit case are both rated to UL 94V-0 flammability specifications.
Leads are tin plated for improved solderability.