TOTAL POWER INT'L
3〜4 Watts 4 :1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
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High Efficiency up to 85%
4:1 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
MIW2000-Series power modules are low-profile
dc-dc converters that operate over input voltage ranges of 9-36VDC
and 18-75VDC and provide precisely regulated output voltages of
3.3V, 5V, 12V, 15V, {5V, {12V and {15V.
$
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.
Low Cost
1500
VDC
The modules have a maximum power rating of 4W and a typical
full-load efficiency of 85%, continuous short circuit, EN55022 level A
conducted noise compliance minimize design-in time, cost and
eliminate the need for external components.
I/O Isolation
EMI
4:1
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
TOTAL POWER, INC. TEL:877-646-0900 FAX:978-453-7395
E-mail:[email protected] http://www.total-power.com
-1-2-
Ref.Amp
MIW2000 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
VDC
VDC
Max.
mA
Min.
mA
@Max. Load
mA (Typ.)
MIW2021
3.3
900
90
161
77
MIW2022
5
660
66
170
81
MIW2023
12
333
33
201
15
267
27
201
{5
{300
{30
156
80
MIW2026
{12
{167
{17
201
83
MIW2027
{15
{133
{13
201
83
MIW2031
3.3
900
90
79
78
MIW2032
5
660
66
84
82
MIW2033
12
333
33
98
85
24
( 9 ~ 36 )
MIW2024
MIW2025
MIW2034
48
( 18 ~ 75 )
Output Current
Input Current
@No Load
mA (Typ.)
Reflected
Ripple
Current
mA (Typ.)
Efficiency
@Max. Load
% (Typ.)
83
20
5
83
15
267
27
98
{5
{300
{30
76
82
MIW2036
{12
{167
{17
98
85
MIW2037
{15
{133
{13
98
85
MIW2035
5
85
Note :
Absolute Maximum Ratings
Parameter
Input Surge Voltage
( 1000 mS )
10
Min.
Max.
Unit
24VDC Input Models
-0.7
50
VDC
VDC
48VDC Input Models
-0.7
100
Lead Temperature (1.5mm from case for 10 Sec.)
---
260
]
Internal Power Dissipation
---
2,500
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 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 under no-load conditions will not
damage these devices; however they may not
meet all listed specifications.
Environmental Specifications
Parameter
Conditions
Min.
Max.
Unit
6. All DC/DC converters should be externally fused at
the front end for protection.
Operating Temperature
Ambient
-40
+71
]
Operating Temperature
Case
-40
+90
]
7. Other input and output voltage may be available,
please contact factory.
Storage Temperature
-40
+125
]
Humidity
---
95
%
8. Specifications subject to change without notice.
Cooling
Conducted EMI
Free-Air Convection
EN55022 Class A
TOTAL POWER, INC. TEL:877-646-0900 FAX:978-453-7395
E-mail:[email protected] http://www.total-power.com
-2-
MIW2000
Input Specifications
Parameter
Model
Start Voltage
Under Voltage Shortdown
Min.
Max.
Unit
24V Input Models
4.5
6
8.5
48V Input Models
8.5
12
17
24V Input Models
---
---
8
48V Input Models
---
---
16
---
---
1
A
---
---
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.
---
{0.1
{0.3
%
Load Regulation
Io=10% to 100%
---
{0.3
{1.0
%
---
50
75
mV P-P
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line,Load & Temp
Typ.
---
---
100
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms.
Over Power Protection
120
---
---
%
Transient Recovery Time
---
150
500
uS
25% Load Step Change
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
---
{2
---
%
---
{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
---
380
500
pF
---
350
---
KHz
1000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Capacitive Load
Models by Vout
3.3V
5V
12V
15V
{5V #
{12V #
{15V #
Unit
Maximum Capacitive Load
3000
3000
3000
3000
680
680
680
uF
Note: # For each output .
TOTAL POWER, INC. TEL:877-646-0900 FAX:978-453-7395
E-mail:[email protected] http://www.total-power.com
-3-
MIW2000 Series
Input Fuse Selection Guide
24V Input Models
48V Input Models
1000mA Slow - Blow Type
500mA 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
30
20
10
0
10uS
100uS
1mS
10mS
TOTAL POWER, INC. TEL:877-646-0900 FAX:978-453-7395
E-mail:[email protected] http://www.total-power.com
-4-2-
100mS
100
100
90
90
Efficiency (%)
Efficiency (%)
MIW2000 Series
80
70
60
80
70
60
50
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
60
50
40
40
30
30
20
10
20
40
60
80
100
Load Current (%)
20
10
20
40
100LFM
400LFM
Natural
convection
200LFM
Output Power (%)
40
20
0
〜
-40
50
60
70
80
Ambient Temperature
80
Efficiency vs Output Load ( Dual Output )
100
60
60
Load Current (%)
Efficiency vs Output Load ( Single Output )
80
High
Input Voltage (V)
90
100
110
]
Derating Curve
TOTAL POWER, INC. TEL:877-646-0900 FAX:978-453-7395
E-mail:[email protected] http://www.total-power.com
-5-
100
MIW2000 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 4.7uF for the 24V input devices and a
2.2uF for the 48V devices.
+
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
Copper Strip
Cout
Resistive
Scope
Load
DC Power
Source
+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 MIW2000 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 680uF
maximum capacitive load for dual outputs and 3000uF
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
MIW2000 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 85°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
MIW2000 Series
Mechanical Data
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
10.2 [0.40]
Side
4.5 [0.18]
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
Dual Output
20.3 [0.80]
2.54 [0.100]
2.5 [0.10]
0.50 [0.020]
15.22 [0.600]
4.1 [0.16]
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
: Metal With Non-Conductive Baseplate
Weight
: 16.2g
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.