MIW2300 Series
2-3W, Ultra-Wide Input Range DIP, Single & Dual Output DC/DC Converters
Key Features
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EMI
EN55022
1500
VDC
I/O Isolation
$
Low Cost
Efficiency up to 84%
1500VDC Isolation
MTBF > 1,000,000 Hours
4:1 Wide Input Range
Low Cost
CSA60950-1 Safety Approval
Complies with EN55022 Class A
Temperature Performance -40] to +71]
UL 94V-0 Package Material
Internal SMD Construction
Industry Standard Pinout
4:1
Wide Range
Minmax's MIW2300-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, {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 3W and a typical full-load efficiency of 84%, continuous short circuit, 40mA output ripple,
EN55022 Class A conducted noise compliance minimize design-in time, cost and eliminate the need for external filtering.
Absolute Maximum Ratings
Parameter
Environmental Specifications
Min.
Max.
Unit
Conditions
Min.
Max.
Unit
24VDC Input Models
-0.7
50
VDC
Operating Temperature
Ambient
-40
+71
]
48VDC Input Models
-0.7
100
VDC
Operating Temperature
Case
-40
+90
]
Lead Temperature (1.5mm from case for 10 Sec.)
---
260
]
Storage Temperature
-40
+125
]
Internal Power Dissipation
---
2,500
mW
Humidity
---
95
%
Cooling
Free-Air Convection
Input Surge Voltage
( 1000 mS )
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
1
MINMAX
Parameter
Conducted EMI
EN55022 Class A
REV:5 2008/10/02
MIW2300 Series
Model Selection Guide
Model
Number
MIW2321
MIW2322
MIW2323
MIW2324
MIW2326
MIW2327
MIW2331
MIW2332
MIW2333
MIW2334
MIW2336
MIW2337
Input
Voltage
Output
Voltage
VDC
VDC
3.3
5
12
15
{12
{15
3.3
5
12
15
{12
{15
24
( 9 ~ 36 )
48
( 18 ~ 75 )
Output Current
Max.
mA
750
600
250
200
{125
{100
750
600
250
200
{125
{100
Min.
mA
93
75
32
25
{16
{13
93
75
32
25
{16
{13
Input Current
@Max. Load
mA (Typ.)
138
158
154
152
156
156
68
78
75
74
76
76
Reflected
Ripple
Current
@No Load
mA (Typ.)
mA (Typ.)
20
15
10
10
Efficiency
@Max. Load
% (Typ.)
75
79
81
82
80
80
76
80
83
84
82
82
Capacitive Load
Models by Vout
Maximum Capacitive Load
# For each output
3.3V
5V
12V
15V
{12V #
{15V #
Unit
680
470
330
220
150
100
uF
Unit
Input Fuse Selection Guide
24V Input Models
48V Input Models
1000mA Slow - Blow Type
500mA Slow - Blow Type
Input Specifications
Parameter
Start Voltage
Under Voltage Shutdown
Model
Min.
Typ.
Max.
24V Input Models
6
7.5
9
48V Input Models
12
15
18
24V Input Models
---
---
8.5
48V Input Models
---
---
16
---
---
0.5
A
---
---
2000
mW
Reverse Polarity Input Current
Short Circuit Input Power
All Models
Input Filter
REV:5 2008/10/02
VDC
Pi Filter
MINMAX
2
MIW2300 Series
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
---
{0.5
{2.0
%
Dual Output, Balanced Loads
---
{0.5
{3.0
%
Line Regulation
Vin=Min. to Max.
---
{0.2
{1.0
%
Load Regulation
Io=Min. to Max.
---
{0.3
{1.0
%
---
40
75
mV P-P
---
---
150
mV P-P
---
---
15
mV rms
110
---
---
%
---
150
500
uS
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Line, Load & Temp.
Ripple & Noise (20MHz)
Over Power Protection
Transient Recovery Time
Transient Response Deviation
Vin=Min.
25% Load Step Change
Temperature Coefficient
Output Short Circuit
---
{2
---
%
---
{0.01
{0.02
%/]
Continuous
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
Isolation Voltage Rated
60 Seconds
1500
---
---
VDC
Isolation Voltage Test
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
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.
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.
3
MINMAX
REV:5 2008/10/02
MIW2300 Series
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
PFM
-Vin
Isolation
Ref.Amp
-Vo
-Vin
PFM
Isolation
Ref.Amp
Input Voltage Transient Rating
150
140
130
120
48VDC Input Models
110
Vin ( VDC )
100
90
80
70
24VDC Input Models
60
50
40
30
20
10
0
10uS
REV:5 2008/10/02
100uS
1mS
MINMAX
10mS
100mS
4
MIW2300 Series
100
100
90
80
80
Efficiency (%)
Efficiency (%)
90
70
60
70
60
50
50
40
40
Low
Nom
Low
High
Input Voltage (V)
Input Voltage (V)
Efficiency vs Input Voltage ( Single Output )
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency(%)
High
Nom
60
50
40
30
60
50
40
30
20
10
20
40
60
80
20
100
10
Load Current(%)
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
90
80
Ambient Temperature
100
110
]
Derating Curve
5
MINMAX
REV:5 2008/10/02
MIW2300 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
+Vin
Lin
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
Load
-Out
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.
+Out
Single Output
DC / DC
Converter
-Vin
+Vin
Com.
-Vin
-Out
+
DC Power
Source
+Vin
+
Scope
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
Resistive
Load
Output Ripple Reduction
-Out
Dual Output
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.
Copper Strip
Cout
+Out
Input Source Impedance
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.
Peak-to-Peak Output Noise Measurement Test
+Vin
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.
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
Single Output
DC / DC
Converter
DC Power
Source
Design & Feature Considerations
Maximum Capacitive Load
The MIW2300 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 3.3V output, 470uF for 5V output,
330uF for 12V output, 220uF for 15V output, 150uF for {12V
output and 100uF for {15V output.
The maximum capacitance can be found in the data sheet.
+Out
Cout
-
-Vin
-Out
+
+Vin
+Out
Dual Output
Com.
DC / DC
Converter
DC Power
Source
-
-Vin
-Out
Load
Cout
Load
Overcurrent Protection
REV:5 2008/10/02
MINMAX
6
MIW2300 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:5 2008/10/02
MIW2300 Series
Physical Characteristics
Mechanical Dimensions
10.2 [0.40]
Side
2.5 [0.10]
0.50 [0.020]
2 3
9
11
16
14
Bottom
23 22
Tolerance
Pin
Millimeters
31.8*20.3*10.2 mm
Case Size
:
Case Material
:
Non-Conductive Black Plastic
Weight
:
12.2g
Flammability
:
UL94V-0
1.25*0.80*0.40 inches
20.3 [0.80]
4.5 [0.18]
2.54 [0.100]
15.22 [0.600]
4.5 [0.18]
31.8 [1.25]
Inches
X.X{0.25
X.XX{0.01
X.XX{0.13
X.XXX{0.005
{0.05
{0.002
Pin Connections
Pin
Single Output
2
-Vin
Dual Output
-Vin
3
-Vin
-Vin
9
No Pin
Common
11
NC
-Vout
14
+Vout
+Vout
Common
16
-Vout
22
+Vin
+Vin
23
+Vin
+Vin
NC: No Connection
REV:5 2008/10/02
MINMAX
8