1 Watt
Ultra High In/Out Isolation
SIP DC/DC Converters
Single and Dual Outputs
Key Features
MAU400 Series
I/O Isolation 6000VDC
Miniature Package
Efficiency up to 75%
SMT Technology
Lost Cost
MTBF > 2,000,000 Hours
MAU400 1W DC/DC's are specially designed to
provide ultra-high levels of isolation 6000VDC in a miniature
SIP package.
The series consists of 12 models with input voltages of 5V
and 12V, and offers standard output voltages of 5V, 12V, 15V
in both single and dual output configurations.
The MAU400 series is an excellent selection for a wide
variety of applications including distributed power systems,
mixed analog/digital subsystems, portable test equipments,
local power networks and battery backed systems.
$
Low Cost
6000
VDC
I/O Isolation
Low Profile
Block Diagram
Single Output
Dual Output
+Vo
+Vin
LC
Filter
-Vin
-Vo
Bipolar
Push-Pull
Inverter
-Vin
+Vin
LC
Filter
Bipolar
Push-Pull
Inverter
+Vo
Com.
-Vo
MAU400 Series
Model Selection Guide
Model
Number
Input
Voltage
Output
Voltage
Output Current
Input Current
Load
Regulation
Efficiency
Max.
VDC
MAU401
MAU402
MAU403
MAU404
MAU405
MAU406
MAU411
MAU412
MAU413
MAU414
MAU415
MAU416
Min.
mA
4
2
1
{2
{1
{1
4
2
1
{2
{1
{1
@Max. Load
mA (Typ.)
303
291
295
303
267
287
126
121
123
126
108
117
@No Load
mA (Typ.)
% (Max.)
10
8
8
10
8
8
10
8
8
10
8
8
@Max. Load
% (Typ.)
66
66
66
66
72
73
66
66
66
66
74
75
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
VDC
5
12
15
{5
{12
{15
5
12
15
{5
{12
{15
mA
200
80
65
{100
{40
{35
200
80
65
{100
{40
{35
55
30
Absolute Maximum Ratings
Parameter
Input Surge Voltage
( 1000 mS )
Internal Power Dissipation
5VDC Input Models
12VDC Input Models
Min.
-0.7
-0.7
---
---
Max.
9
18
260
650
Unit
VDC
VDC
]
mW
Note :
Lead Temperature (1.5mm from case for 10 Sec.)
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 devices; however they may not
meet all listed specifications.
Exceeding these values can damage the module. These are not continuous
operating ratings.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
Conditions
Ambient
Case
Min.
-25
-25
-40
---
Free-Air Convection
Max.
+70
+90
+125
95
Unit
]
]
]
%
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.
MAU400 Series
Test Configurations
Input Reflected-Ripple Current Test Setup
To Oscilloscope
+
Battery
+
Lin
Current
Probe
+Vin
+Out
Load
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 recommended 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.
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.
+
DC Power
Source
-
-Vin
+Vin
Single Output
DC / DC
Converter
-Out
+Out
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.
+Vin
Single Output
DC / DC
Converter
-Vin
-Out
+Out
Copper Strip
Cout
Scope
Resistive
Load
Cout
Load
+
DC Power
Source
-
+Vin
+Out
Dual Output
DC / DC Com.
Converter
Cout
Load
-Vin
-Out
+Vin
Dual Output
DC / DC
Converter
-Vin
+Out
Com.
Copper Strip
Cout
Cout
Scope
Resistive
Load
Scope
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.
-Out
Design & Feature Considerations
Maximum Capacitive Load
The MAU400 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 220
u
F
maximum capacitive load for dual outputs and 680
u
F
capacitive load for single outputs.
The maximum capacitance can be found in the data.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
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.
+
DC Power
Source
-
+
Cin
+Vin
DC / DC
Converter
-Vin
+Out
Load
-Out
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