MAU111 TOTAL-POWER [Total Power International], MAU111 Datasheet - Page 5

• Manufacturer Part Number: MAU111
• Description: 1 Watt Ultra Miniature SIP DC/DC Converters Single and Dual Outputs
• Manufacturer: TOTAL-POWER [Total Power International]

MAU100 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
capacitance at the output.
mode during start-up, affecting the ramp-up and the startup
time.
maximum capacitive load for dual outputs and 220
capacitive load for single outputs.
Input Source Impedance
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
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 MAU100 series has limitation of maximum connected
The power module may be operated in current limiting
For optimum performance we recommend 100
The maximum capacitance can be found in the data.
The power module should be connected to a low
+Vin
+Vin
-Vin
Dual Output
-Vin
Single Output
To Oscilloscope
Converter
DC / DC
+
Converter
DC / DC
Battery
+
+Out
+Out
Com.
-Out
-Out
Cin
Lin
Copper Strip
Copper Strip
Current
Probe
Cout
Cout
Cout
+Vin
-Vin
Converter
DC / DC
Scope
+Out
-Out
Scope
Scope
Resistive
Resistive
Load
Load
Load
u
u
F
F
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 commended 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,15V 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 95°C.
obtained in an experimental apparatus.
Position of air velocity
probe and thermocouple
In applications where power is supplied over long lines and
Capacitor mounted close to the power module helps
A good quality low ESR capacitor placed as close as
To reduce output ripple, it is recommended to use 1.0uF
Many conditions affect the thermal performance of the
The derating curves are determined from measurements
DC Power
DC Power
DC Power
Source
Source
Source
+
+
+
-
-
-
15mm / 0.6in
+
Cin
+Vin
+Vin
-Vin
-Vin
+Vin
-Vin
Single Output
Dual Output
Converter
Converter
DC / DC
DC / DC
Converter
DC / DC
50mm / 2in
Com.
+Out
+Out
-Out
-Out
+Out
-Out
Cout
DUT
Air Flow
Load
Cout
Load
Load