MSAU400 Series
2W, Miniature SMD, Single & Dual Output DC/DC Converters
Key Features
Efficiency up to 82%
1000VDC Isolation
MTBF > 2,000,000 Hours
Low Cost
Input 5, 12 and 24VDC
Output 5, 12, {5, {12 and {15VDC
Temperature Performance -40] to +85]
Lead Frame Technology
UL 94V-0 Package Material
Internal SMD Construction
Minmax's MSAU400 2W DC/DC's are in "gull-wing" SMT
package, weigh a mere 2.2 grams and meet 245]/10sec in
solder-reflow for lead free process.
The series consists of 13 models with input voltages of 5V,12V
and 24VDC which offers standard output voltages of 5V, 12V, {5V,
{12V and {15VDC for the choice. Their impressive guaranteed
efficiencies enable all models to deliver their fully rated output power
from -40] to +85] without heat sinking or forced-air cooling.
The MSAU400 series are excellent selections for a variety of
applications including data communication equipments, distributed
power systems, telecommunication equipments and industrial robot
systems.
The MSAU400 units are available in tape and reel package.
I/O Isolation
Low Cost
Low Profile
SMD
1000
VDC
$
Block Diagram
Single Output
Dual Output
+Vo
+Vin
Bipolar
Push-Pull
Inverter
-Vin
-Vo
-Vin
+Vin
Bipolar
Push-Pull
Inverter
+Vo
Com
-Vo
1
MINMAX
REV:0 2005/04
MSAU400 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Load
Regulation
Efficiency
VDC
MSAU401
MSAU403
MSAU406
MSAU408
MSAU409
MSAU411
MSAU413
MSAU418
MSAU419
MSAU421
MSAU423
MSAU428
MSAU429
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
(21.6 ~ 26.4)
VDC
5
12
{5
{12
{15
5
12
{12
{15
5
12
{12
{15
Max.
mA
400
165
{200
{83
{66
400
165
{83
{66
400
165
{83
{66
Min.
mA
8
3
{4
{1.5
{1
8
3
{1.5
{1
8
3
{1.5
{1
@Max. Load
mA (Typ.)
519
488
519
504
501
213
201
202
201
106
101
102
100
@No Load
mA (Typ.)
60
30
15
% (Max.)
11
11
10
7
7
8
5
5
5
8
5
5
5
@Max. Load
% (Typ.)
77
81
77
79
79
78
82
82
82
78
81
81
82
Absolute Maximum Ratings
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
-0.7
-0.7
---
---
Max.
9
18
30
300
650
Unit
VDC
VDC
VDC
]
mW
Notes :
1. Specifications typical at Ta=+25], resistive load,
nominal input voltage, rated output current unless
otherwise noted.
2. Ripple & Noise measurement bandwidth is 0-20
MHz.
3. These power converters require a minimum
output loading to maintain specified regulation.
4. Operation under no-load conditions will not
damage these modules; however, they may not
meet all specifications listed.
5. All DC/DC converters should be externally fused
on the front end for protection.
Min.
Max.
-40
+85
-40
+90
-40
+125
---
95
Free-Air Convection
Unit
]
]
]
%
6. Other input and output voltage may be available,
please contact factory.
7. Specifications subject to change without notice.
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
Conditions
Ambient
Case
Input Specifications
Parameter
Input Voltage Range
Model
5V Input Models
12V Input Models
24V Input Models
Reverse Polarity Input Current
Input Filter
All Models
Min.
4.5
10.8
21.6
---
Typ.
5
12
24
---
Max.
5.5
13.2
26.4
0.3
A
VDC
Unit
Internal Capacitor
REV:0 2005/04
MINMAX
2
MSAU400 Series
Output Specifications
Parameter
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Over Load
Temperature Coefficient
Output Short Circuit
Over Line, Load & Temp.
Dual Output, Balanced Loads
For Vin Change of 1%
Io=20% to 100%
Conditions
Min.
---
---
---
---
---
---
120
---
0.5 Second Max.
Typ.
{1.5
{0.1
{1.2
50
---
---
---
{0.01
Max.
{4.0
{1.0
{1.5
75
150
5
---
{0.02
Unit
%
%
%
%
mV P-P
mV P-P
mV rms
%
%/]
See Model Selection Guide
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.
1000
1100
10
---
70
2000
Typ.
---
---
---
60
100
---
Max.
---
---
---
100
120
---
Unit
VDC
VDC
G[
pF
KHz
K Hours
Capacitive Load
Models by Vout
Maximum Capacitive Load
# For each output
5V
47
12V
10
{5V #
10
{12V #
4.7
{15V #
4.7
Unit
uF
Input Fuse Selection Guide
5V Input Models
1000mA Slow - Blow Type
12V Input Models
500mA Slow - Blow Type
24V Input Models
200mA Slow - Blow Type
100
80
Output Power (%)
100LFM
400LFM
200LFM
60
Natural
convection
40
20
0
-25
〜
50
60
70
80
]
90
100
110
Ambient Temperature
Derating Curve
3
MINMAX
REV:0 2005/04
MSAU400 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
Capacitor mounted close to the power module helps
ensure stability of the unit, it is comended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 2.2uF for the 5V input devices, a 1.0uF for
the 12V input devices and a 0.47uF for the 24V devices.
+
DC Power
Source
-
+
Cin
-Vin
-Out
+Vin
DC / DC
Converter
+Out
Load
DC / DC
Converter
-Vin
-Out
Cin
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 1.5uF
capacitors at the output.
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.33uF 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
-
+Vin
Single Output
DC / DC
Converter
-Vin
+Out
Cout
-Out
Load
+
+Vin
+Out
Dual Output
DC / DC Com.
Converter
Cout
Load
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
DC Power
Source
-
-Vin
-Out
-Out
Design & Feature Considerations
Maximum Capacitive Load
The MSAU400 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.
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.
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.
REV:0 2005/04
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
MINMAX
4
MSAU400 Series
Mechanical Dimensions
Top View ( 2.54 mm / 0.1 inch grids )
Connecting Pin Patterns
Single Output
8
5
9.3[0.36]
1.2[0.04]
2.57[0.101]
1.0
1
2.57 2.54
[0.101] [0.100]
12.75
1.20
2
5.08
[0.200]
4
0.1[0.04]
12.70
12.4[0.48]
9.30
12.7[0.50]
9.3[0.36]
8.9[0.35]
6.7[0.26]
8.7[0.34]
8.9[0.35]
2.54 2.54
0 ~4
2.25[0.08]
8.6[0.33]
10.0[0.39]
11.8[0.46]
5.08
0.6[0.023]
12.4[0.48]
0.25[0.01]
[0.07]
2.0
0.15
Dual Output
10
1.2[0.04]
2.54[0.10]
1.0
7
9.3[0.36]
15.24
1.20
1
2
5.08
[0.200]
4
5
2.54
[0.100] [0.100]
2.54 2.54
[0.100]
0.1[0.04]
12.70
9.3[0.36]
8.9[0.35]
14.8[0.58]
9.30
15.3[0.60]
6.7[0.26]
8.7[0.34]
8.9[0.35]
2.54 2.54
0 ~4
2.25[0.08]
8.6[0.33]
10.0[0.39]
11.8[0.46]
5.08
2.54
0.25[0.01]
0.6[0.023]
14.8[0.58]
[0.07]
2.0
0.15
Tolerance
Millimeters
X.X{0.25
X.XX{0.13
Inches
X.XX{0.01
X.XXX{0.005
{0.002
Pin
{0.05
5
MINMAX
REV:0 2005/04
1.70
0.10
1.70
0.10
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