MIW2000 Series
3-4W, Ultra-Wide Input Range DIP, Single & Dual Output DC/DC Converters
Key Features
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Efficiency up to 85%
1500VDC Isolation
MTBF > 1,000,000 Hours
4:1 Wide Input Range
UL1950 Safety Approval
Complies with EN55022 Class A
Temperature Performance -40] to +71]
Industry Standard Pinout
UL 94V-0 Package Material
Internal SMD Construction
Minmax's MIW2000-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
Low Cost
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
1500
VDC
systems.
The modules have a maximum power rating of 4W and a typical
EMI
4:1
EN55022
Wide Range
full-load efficiency of 85%, continuous short circuit, 50mA output
ripple, EN55022 Class A conducted noise compliance minimize
I/O Isolation
design-in time, cost and eliminate the need for external filtering.
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
-Vin
1
PFM
Isolation
Ref.Amp
-Vo
-Vin
MINMAX
PFM
Isolation
Ref.Amp
REV:0 2005/04
MIW2000 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
VDC
VDC
3.3
Max.
mA
900
Min.
mA
90
@Max. Load
mA (Typ.)
161
MIW2022
5
660
66
170
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
MIW2021
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.)
77
81
83
20
15
267
27
98
{300
{30
76
82
MIW2036
{12
{167
{17
98
85
MIW2037
{15
{133
{13
98
85
85
Notes :
Absolute Maximum Ratings
Parameter
Input Surge Voltage
( 1000 mS )
5
83
{5
MIW2035
10
5
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 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 under no-load conditions will not
damage these modules; however, they may not
meet all specifications listed.
Environmental Specifications
Parameter
6. All DC/DC converters should be externally fused at
the front end for protection.
Conditions
Min.
Max.
Unit
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
REV:0 2005/04
Free-Air Convection
EN55022 Class A
MINMAX
2
MIW2000 Series
Input Specifications
Parameter
Start Voltage
Model
Under Voltage Shutdown
Min.
Max.
24V Input Models
4.5
6
8.5
48V Input Models
8.5
12
17
24V Input Models
---
---
8
48V Input Models
Reverse Polarity Input Current
Short Circuit Input Power
Typ.
All Models
Unit
VDC
---
---
16
---
---
1
A
---
---
2000
mW
Input Filter
Pi Filter
Output Specifications
Parameter
Conditions
Output Voltage Accuracy
Min.
Typ.
Max.
Unit
%
---
{0.5
{1.0
Dual Output, Balanced Loads
---
{0.5
{2.0
%
Line Regulation
Vin=Min. to Max.
---
{0.2
{0.5
%
Load Regulation
Io=10% to 100%
---
{0.3
{1.0
%
---
50
75
mV P-P
Output Voltage Balance
Ripple & Noise (20MHz)
---
---
100
mV P-P
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line, Load & Temp.
---
---
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 Rated
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
Isolation Voltage Test
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
# For each output
3
MINMAX
REV:0 2005/04
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
REV:0 2005/04
100uS
1mS
MINMAX
10mS
100mS
4
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
High
Input Voltage (V)
60
80
100
20
Load Current (%)
10
20
40
60
80
100
Load Current (%)
Efficiency vs Output Load ( Single Output )
Efficiency vs Output Load ( Dual Output )
100
100LFM
400LFM
Natural
convection
200LFM
Output Power (%)
80
60
40
20
0
〜
-40
50
60
70
80
Ambient Temperature
90
100
110
]
Derating Curve
5
MINMAX
REV:0 2005/04
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.
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
+Vin
Lin
Cin
-Vin
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.
+Out
DC / DC
Converter
Current
Probe
Load
-Out
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
+Vin
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 Power
Source
Copper Strip
+Vin
+
Cout
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Load
Cin
-Vin
-Out
Resistive
Scope
Load
-Out
+Out
+Out
DC / DC
Converter
-
Single Output
DC / DC
Converter
-Vin
Input Source Impedance
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.
Copper Strip
Cout
Scope
Cout
Scope
Resistive
Load
+
+Vin
DC Power
Source
Design & Feature Considerations
+Out
Single Output
DC / DC
Converter
Cout
-
-Vin
-Out
+
+Vin
+Out
Load
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 sheet.
REV:0 2005/04
Dual Output
DC / DC Com.
Converter
DC Power
Source
MINMAX
-
-Vin
-Out
Cout
Load
6
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 90°C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
15mm / 0.6in
7
50mm / 2in
Air Flow
DUT
MINMAX
REV:0 2005/04
MIW2000 Series
Mechanical Dimensions
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.X{0.25
X.XX{0.01
X.XX{0.13
{0.05
X.XXX{0.005
{0.002
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]
Pin Connections
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*0.80*0.40 inches
NC: No Connection
The MIW2000 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.
REV:0 2005/04
MINMAX
8