+Vo
Bipolar
Push-Pull
Inverter
+Vin
-Vin
-Vo
Block Diagram
Low Profile
Low Cost
$
I/O Isolation
1000
VDC
SMD
Minmax's MSAU100 1W DC/DC's are in "gull-wing" SMT package,
weigh a mere 1.5 grams and meet 245]/10sec in solder-reflow for lead
free process.
The series consists of 9 models with input voltages of 5V and
12VDC which offers standard single output voltages of 3.3V, 5V, 9V, 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 MSAU100 series is an excellent selection for a variety of
applications including data communication equipments, distributed power
systems, telecommunication equipments and industrial robot systems.
The MSAU100 units are available
in tape and reel package.
Interanl SMD Construction
UL 94V-0 Package Material
Lead Frame Technology
Temperature Performance -40] to +85]
Output 3.3, 5, 9, 12 and 15VDC
Input 5 and 12VDC
Low Cost
MTBF > 2,000,000 Hours
1000VDC Isolation
Efficiency up to 82%
Key Features
1W, Miniature SMD, Single Output DC/DC Converters
MSAU100 Series
REV:0 2005/04
MINMAX
1
82
5
102
1
67
15
MSAU114
81
5
104
1.5
84
12
MSAU113
78
8
106
2
110
9
MSAU112
81
8
15
103
4
200
5
12
( 10.8 ~ 13.2 )
MSAU111
75
10
264
60
300
3.3
MSAU105
81
7
248
1
67
15
MSAU104
80
8
252
1.5
84
12
MSAU103
78
10
254
2
110
9
MSAU102
80
10
30
250
4
200
5
5
( 4.5 ~ 5.5 )
MSAU101
% (Typ.)
% (Max.)
mA (Typ.)
mA (Typ.)
mA
mA
VDC
VDC
@Max. Load
@No Load
@Max. Load
Min.
Max.
Efficiency
Load
Regulation
Input Current
Output Current
Output
Voltage
Input
Voltage
Model
Number
Model Selection Guide
Free-Air Convection
Cooling
%
95
---
Humidity
]
+125
-40
Storage Temperature
]
+90
-40
Case
Operating Temperature
]
+85
-40
Ambient
Operating Temperature
Unit
Max.
Min.
Conditions
Parameter
Environmental Specifications
Exceeding the absolute maximum ratings of the unit could cause damage.
These are not continuous operating ratings.
mW
450
---
Internal Power Dissipation
]
260
---
Lead Temperature (1.5mm from case for 10 Sec.)
VDC
18
-0.7
12VDC Input Models
VDC
9
-0.7
5VDC Input Models
Input Surge Voltage
( 1000 mS )
Unit
Max.
Min.
Parameter
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
at the front end for protection.
6. Other input and output voltage may be available,
please contact factory.
7. Specifications subject to change without notice.
Absolute Maximum Ratings
Internal Capacitor
Input Filter
A
0.3
---
---
All Models
Reverse Polarity Input Current
13.2
12
10.8
12V Input Models
VDC
5.5
5
4.5
5V Input Models
Input Voltage Range
Unit
Max.
Typ.
Min.
Model
Parameter
Input Specifications
MSAU100 Series
2
MINMAX
REV:0 2005/04
K Hours
---
---
2000
MIL-HDBK-217F @ 25], Ground Benign
MTBF
KHz
140
100
50
Switching Frequency
pF
100
40
---
100KHz,1V
Isolation Capacitance
M[
---
---
1000
500VDC
Isolation Resistance
VDC
---
---
1100
Flash Tested for 1 Second
Isolation Voltage Test
VDC
---
---
1000
60 Seconds
Isolation Voltage Rated
Unit
Max.
Typ.
Min.
Conditions
Parameter
General Specifications
0.5 Second Max.
Output Short Circuit
%/]
{0.02
{0.01
---
Temperature Coefficient
%
---
---
120
Over Load
mV rms
5
---
---
Ripple & Noise (20MHz)
mV P-P
150
---
---
Over Line, Load & Temp.
Ripple & Noise (20MHz)
mV P-P
120
60
---
Ripple & Noise (20MHz)
%
See Model Selection Guide
Io=20% to 100%
Load Regulation
%
{1.5
{1.2
---
For Vin Change of 1%
Line Regulation
%
{3.0
{1.0
---
Output Voltage Accuracy
Unit
Max.
Typ.
Min.
Conditions
Parameter
Output Specifications
uF
33
33
33
33
33
Maximum Capacitive Load
Unit
15V
12V
9V
5V
3.3V
Models by Vout
Capacitive Load
200mA Slow - Blow Type
500mA Slow - Blow Type
12V Input Models
5V Input Models
Input Fuse Selection Guide
MSAU100 Series
REV:0 2005/04
MINMAX
3
Efficiency vs Output Load
Efficiency vs Input Voltage
20
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60
40
20
10
80
50
60
70
80
90
100
Efficiency (%)
Input Voltage (V)
Nom
Low
High
Derating Curve
]
Ambient Temperature
Output Power (%)
0
20
40
60
80
100
-40
50
60
80
100
110
90
70
400LFM
200LFM
100LFM
Natural
convection
MSAU100 Series
4
MINMAX
REV:0 2005/04
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.
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.
Design & Feature Considerations
Maximum Capacitive Load
The MSAU100 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 33uF maximum
capacitive load
.
The maximum capacitance can be found in the data sheet.
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.
Capacitor mounted close to the power module helps
ensure stability of the unit, it is recommeded to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of 2.2uF for the 5V input devices, and a 1.0uF
for the 12V devices.
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 0.47uF
capacitors at the output.
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 90C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
MSAU100 Series
REV:0 2005/04
MINMAX
5
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
Battery
+
Lin
+
Cin
To Oscilloscope
Current
Probe
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
DC Power
Source
+
-
Cin
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
DUT
Position of air velocity
probe and thermocouple
50mm / 2in
Air Flow
15mm / 0.6in
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