MSAU400 Series
2W, Miniature SMD, Single & Dual Output DC/DC Converters
Key Features
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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
SMD
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
1000
VDC
applications including data communication equipments, distributed
$
power systems, telecommunication equipments and industrial robot
systems.
I/O Isolation
Low Cost
Low Profile
The MSAU400 units are available in tape and reel package.
Block Diagram
Single Output
Dual Output
+Vo
+Vo
+Vin
+Vin
Bipolar
Push-Pull
Inverter
Bipolar
Push-Pull
Inverter
-Vin
-Vin
-Vo
1
Com
MINMAX
-Vo
REV:0 2005/04
MSAU400 Series
Model Selection Guide
Model
Number
MSAU401
MSAU403
MSAU406
MSAU408
MSAU409
MSAU411
MSAU413
MSAU418
MSAU419
MSAU421
MSAU423
MSAU428
MSAU429
Input
Voltage
Output
Voltage
VDC
VDC
5
12
{5
{12
{15
5
12
{12
{15
5
12
{12
{15
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
(21.6 ~ 26.4)
Output Current
Max.
mA
400
165
{200
{83
{66
400
165
{83
{66
400
165
{83
{66
Input Current
Min.
mA
8
3
{4
{1.5
{1
8
3
{1.5
{1
8
3
{1.5
{1
Absolute Maximum Ratings
@No Load
mA (Typ.)
60
30
15
% (Max.)
11
11
10
7
7
8
5
5
5
8
5
5
5
Efficiency
@Max. Load
% (Typ.)
77
81
77
79
79
78
82
82
82
78
81
81
82
Notes :
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
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. 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.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
@Max. Load
mA (Typ.)
519
488
519
504
501
213
201
202
201
106
101
102
100
Load
Regulation
Conditions
Ambient
Case
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.
Input Specifications
Parameter
Input Voltage Range
Reverse Polarity Input Current
Input Filter
REV:0 2005/04
Model
Min.
Typ.
Max.
5V Input Models
4.5
5
5.5
12V Input Models
10.8
12
13.2
24V Input Models
21.6
24
26.4
---
---
0.3
All Models
MINMAX
Unit
VDC
A
Internal Capacitor
2
MSAU400 Series
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
---
{1.5
{4.0
%
Dual Output, Balanced Loads
---
{0.1
{1.0
%
Line Regulation
For Vin Change of 1%
---
{1.2
{1.5
Load Regulation
Io=20% to 100%
Output Voltage Accuracy
Output Voltage Balance
%
See Model Selection Guide
Ripple & Noise (20MHz)
%
---
50
75
mV P-P
---
---
150
mV P-P
Ripple & Noise (20MHz)
---
---
5
mV rms
Over Load
120
---
---
%
Temperature Coefficient
---
{0.01
{0.02
%/]
Ripple & Noise (20MHz)
Over Line, Load & Temp.
Output Short Circuit
0.5 Second Max.
General Specifications
Parameter
Conditions
Min.
Typ.
Max.
Unit
60 Seconds
1000
---
---
VDC
Flash Tested for 1 Second
1100
---
---
VDC
G[
Isolation Voltage
Isolation Voltage Test
Isolation Resistance
500VDC
10
---
---
Isolation Capacitance
100KHz,1V
---
60
100
pF
70
100
120
KHz
2000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Capacitive Load
Models by Vout
Maximum Capacitive Load
5V
12V
{5V #
{12V #
{15V #
Unit
47
10
10
4.7
4.7
uF
# For each output
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
1000mA Slow - Blow Type
500mA Slow - Blow Type
200mA Slow - Blow Type
100
400LFM
100LFM
Output Power (%)
80
200LFM
60
Natural
convection
40
20
0
〜
-25
50
60
70
80
Ambient Temperature
90
100
110
]
Derating Curve
3
MINMAX
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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
+Vin
Lin
Cin
-Vin
Single Output
DC / DC
Converter
-Vin
DC / DC
Converter
-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 1.5uF
capacitors at the output.
+
+Vin
Resistive
Load
+Out
Single Output
DC / DC
Converter
DC Power
Source
Scope
Load
Cin
Output Ripple Reduction
-Out
Copper Strip
Cout
DC Power
Source
+Out
Load
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.
+Out
+Vin
+
-
Peak-to-Peak Output Noise Measurement Test
+Vin
+
+Out
DC / DC
Converter
Current
Probe
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.
-
-Vin
+
+Vin
Cout
Load
-Out
-Out
+Vin
+Out
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
DC Power
Source
Copper Strip
Cout
Cout
Scope
Resistive
Load
-
-Vin
Cout
Load
-Out
Scope
Thermal Considerations
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.
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
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
+Out
Dual Output
DC / DC Com.
Converter
MINMAX
15mm / 0.6in
50mm / 2in
Air Flow
DUT
4
MSAU400 Series
Mechanical Dimensions
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
5
9.3[0.36]
8
1.0
2
1.20
4
5.08
[0.200]
9.3[0.36]
8.9[0.35]
0.1[0.04]
12.7[0.50]
1.70
8.7[0.34]
8.9[0.35]
6.7[0.26]
12.4[0.48]
0.10
2.57 2.54
[0.101] [0.100]
[0.07]
2.54 2.54
2.25[0.08]
2.0
12.4[0.48]
5.08
0 ~4
0.25[0.01]
0.6[0.023]
9.30
1
12.75
12.70
1.2[0.04]
2.57[0.101]
8.6[0.33]
10.0[0.39]
11.8[0.46]
0.15
Dual Output
7
9.3[0.36]
1.0
2
4
5.08
[0.200]
2.54 2.54
[0.100] [0.100]
1.20
5
2.54
[0.100]
0.1[0.04]
15.3[0.60]
Tolerance
Pin
5
Millimeters
8.9[0.35]
8.7[0.34]
8.9[0.35]
2.54 2.54
5.08
2.54
0 ~4
2.25[0.08]
0.25[0.01]
0.6[0.023]
14.8[0.58]
9.3[0.36]
[0.07]
2.0
6.7[0.26]
14.8[0.58]
1.70 0.10
1
15.24
9.30
1.2[0.04]
2.54[0.10]
12.70
10
8.6[0.33]
10.0[0.39]
11.8[0.46]
0.15
Inches
X.X{0.25
X.XX{0.01
X.XX{0.13
X.XXX{0.005
{0.05
{0.002
MINMAX
REV:0 2005/04
MSAU400 Series
Pin Connections
Physical Characteristics
Pin
Single Output
Dual Output
1
-Vin
-Vin
2
+Vin
+Vin
4
-Vout
Common
Case Size
(Single Output)
:
12.8*9.3*8.9 mm
0.50*0.36*0.35 inches
Case Size
(Dual Output)
:
15.3*9.3*8.9 mm
0.60*0.36*0.35 inches
:
Molding
5
+Vout
-Vout
7
No Pin
+Vout
Case Material
8
NA
No Pin
Weight (Single Output) :
1.5g
10
No Pin
NA
Weight (Dual Output)
:
2.2g
Flammability
:
UL94V-0
NA:Not Available for Electrical Connection
The MSAU400 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
6