MSAU100 Minmax Technology Co., Ltd., MSAU100 Datasheet - Page 5

• Manufacturer Part Number: MSAU100
• Description: 1w, Miniature Smd, Single Output Dc/dc Converters
• Manufacturer: Minmax Technology Co., Ltd.

MSAU100 Series
Test Configurations
Input Reflected-Ripple Current Test Setup
Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.
module, measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement Test
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
connected capacitance at the output.
mode during start-up, affecting the ramp-up and the startup
time.
capacitive load
Input Source Impedance
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
output loading is high, it may be necessary to use a capacitor
at the input to ensure startup.
ensure stability of the unit, it is recommeded to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
5
Input reflected-ripple current is measured with a inductor
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
Use a Cout 0.33uF ceramic capacitor.
Scope measurement should be made by using a BNC
The MSAU100 series has limitation of maximum
The power module may be operated in current limiting
For optimum performance we recommend 33uF maximum
The maximum capacitance can be found in the data sheet.
The power module should be connected to a low
In applications where power is supplied over long lines and
Capacitor mounted close to the power module helps
+Vin
-Vin
Single Output
To Oscilloscope
+
Converter
Battery
DC / DC
.
+
Cin
+Out
-Out
Lin
Copper Strip
Current
Probe
Cout
+Vin
-Vin
Converter
DC / DC
+Out
Scope
-Out
Resistive
Load
Load
MINMAX
for the 12V input devices and a 0.47uF for the 24V devices.
Output Ripple Reduction
practicable across the load will give the best ripple and noise
performance.
capacitors at the output.
Thermal Considerations
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.
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
KHz) capacitor of 2.2uF for the 5V input devices, a 1.0uF
A good quality low ESR capacitor placed as close as
To reduce output ripple, it is recommended to use 0.47uF
Many conditions affect the thermal performance of the
The derating curves are determined from measurements
DC Power
DC Power
Source
Source
+
+
-
-
15mm / 0.6in
+
Cin
+Vin
-Vin
+Vin
-Vin
Single Output
Converter
DC / DC
Converter
DC / DC
50mm / 2in
+Out
-Out
+Out
-Out
Cout
REV:2 2008/02
DUT
Air Flow
Load
Load