Delphi DSAU100 Series DC/DC Power
Modules: 5, 12, 24Vin, 1W SMD
The Delphi DSAU100, 5V, 12V, and 24V input, single output, SMD
form factor, isolated DC/DC converter is the latest offering from a
world leader in power systems technology and manufacturing ―
Delta Electronics, Inc. The DSAU100 series operate from 5V, 12V, or
24V (±10%) and provides 3.3V, 5V, 9V, 12V, or 15V of single output
in an industrial standard, plastic molded SMD package (body size:
0.50”x0.31”x0.27”). This series provides up to 1W of output power
with 1000V isolation and a typical full-load efficiency up to 82%. With
creative design technology and optimization of component
placement, these converters possess outstanding electrical and
thermal performance, as well as extremely high reliability under
highly stressful operating conditions. APPLICATIONS
Industrial
Transportation
Process/ Automation
DATASHEET
DS_DSAU100_12032008
FEATURES
Efficiency up to 82%
Industry standard form factor and pinout
Body size:
12.7 x8.0 x6.8mm (0.50” x0.31” x0.27”)
Input: 5V, 12V, 24V (±10%)
Output: 3.3, 5, 9, 12, 15V
Low ripple and noise
1000V isolation
SMD packaged
Moisture sensitivity level (MSL) 3
UL 94V-0 package material
ISO 9001 and ISO 14001 certified
manufacturing facility
OPTIONS
2
TECHNICAL SPECIFICATIONS
TA = 25°C, airflow rate = 0 LFM, nominal Vin, nominal Vout, resistive load unless otherwise noted.
PARAMETER NOTES and CONDITIONS DSAU100 (Standard)
Min. Typ. Max. Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Transient 5V input model, 1000ms -0.7 9 Vdc
Transient 12V input model, 1000ms -0.7 18 Vdc
Transient 24V input model, 1000ms -0.7 30
Internal Power Dissipation 450 mW
Operating Temperature Ambient -40 85 °C
Case -40 100 °C
Storage Temperature -40 125 °C
Humidity 95 %
Lead Temperature in Assembly 1.5mm from case for 10 seconds 260 °C
Input/Output Isolation Voltage 1000 Vdc
INPUT CHARACTERISTICS
Operating Input Voltage 5V input model 4.5 5 5.5 Vdc
12V input model 10.8 12 13.2 Vdc
24V input model 21.6 24 26.4 Vdc
Maximum Input Current Please see Model List table on page 6
No-Load Input Current 5V model 30 mA
12V model 15 mA
24V model 8 mA
Reverse Polarity Input Current 0.3 A
OUTPUT CHARACTERISTICS
Output Voltage Set Point Accuracy ±1.0 ±3.0 %
Output Voltage Regulation
Over Load Io=20% to 100%, please see page 6
Over Line For Vin change of 1% ±1.2 ±1.5 %
Over Temperature Tc=-40°C to 100°C ±0.01 ±0.02 %/C
Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth
Peak-to-Peak Full Load, 0.33µF ceramic 60 120 mV
Peak-to-Peak, over line, load, temperature Full Load, 0.33µF ceramic 150 mV
RMS Full Load, 0.33µF ceramic 5 mV
Output Short Circuit 0.5 Second
Maximum Output Capacitance Single output models 33 µF
EFFICIENCY
100% Load Please see Model List table on page 6
ISOLAT ION CHARACTERI ST IC S
Isolation Voltage Input to output, 60 Seconds 1000 Vdc
Isolation Voltage Test Flash Test for 1 seconds 1100 Vdc
Isolation Resistance 500VDC 1000 MΩ
Isolation Capacitance 100KHz, 1V 40 100 pF
FEATURE CHARACTERISTICS
Switching Frequency 50 100 140 kHz
GENERAL SPECIFICATIONS
MTBF MIL-HDBK-217F; Ta=25°C, Ground Benign 2 M hours
Weight 5V and 12V models 1.5 grams
24V models 1.8 grams
Case Material Non-conductive black plastic
Flammability UL94V-0
Input Fuse 5V model, 500mA slow blown type
12V model, 200mA slow blown type
24V model, 100mA slow blown type
Notes:
1. These power converters require a minimum output load to maintain specified regulation (please see page 6 for the
suggested minimum load). Operation under no-load conditions will not damage these modules; however, they may
not meet all specifications listed above.
2. These DC/DC converters should be externally fused at the front end for protection.
3
ELECTRICAL CHARACTERISTICS CURVES
50
60
70
80
90
100
Efficiency (%)
Input Voltage (V)
NomLow High
20
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60402010 80
Figure 1: Efficiency vs. Input Voltage
Figure 2: Efficiency vs. Output Load
+Vo
Bipolar
Push-Pull
Inverter
+Vin
-Vin
-Vo
Figure 3: Block diagram of DSAU100 single output modules
4
Design & Feature Considerations
The DSAU100 circuit block diagrams are shown in
Figure 3
Peak-to-Peak Output Noise Measurement
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. A Cout of 0.33uF ceramic capacitor is
placed between the terminals shown below.
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
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.
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
DC Power
Source
+
-
Cin
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 input of the power
module helps ensure stability of the unit, it is
recommended to use a good quality low Equivalent
Series Resistance (ESR < 1.0Ω 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.
Maximum Capacitive Load
The DSAU100 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 for single outputs.
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.
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly
process before the board or system undergoes electrical
testing. Inadequate cleaning and/or drying may lower the
reliability of a power module and severely affect the
finished circuit board assembly test. Adequate cleaning
and/or drying is especially important for un-encapsulated
and/or open frame type power modules. For assistance
on appropriate soldering and cleaning procedures,
please contact Delta’s technical support team.
5
THERMAL CONSIDERATIONS
Thermal management is an important part of the
system design. To ensure proper, reliable operation,
sufficient cooling of the power module is needed over
the entire temperature range of the module.
Convection cooling is usually the dominant mode of
heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in
which the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the facing PWB and
PWB is constantly kept at 25.4mm (1’’).
Figure 4: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the maximum
operating temperature. If the temperature exceeds the
maximum module temperature, reliability of the unit
may be affected.
THERMAL CURVES
DSAU100series Output Current vs. Ambient Temperature and Air Velocity
(Either Orientation)
0%
20%
40%
60%
80%
100%
120%
25 35 45 55 65 75 85
Ambient Temperature (℃)
Output Power (%)
Natural
Convection
Figure 5: Derating Curve
6
MODEL LIST
INPUT OUTPUT Full Load
Efficiency Load
Regulation
Vdc (V) Max (mA) Vdc (V) Max (mA) Min (mA) % %
DSAU105 264 3.3 300 6 75 10
DSAU101 250 5 200 4 80 10
DSAU102 254 9 110 2 78 10
DSAU103 252 12 84 1.5 80 8
DSAU104 248 15 67 1 81 7
DSAU115 110 3.3 300 6 75 8
DSAU111 103 5 200 4 81 8
DSAU112 106 9 110 2 78 8
DSAU113 104 12 84 1.5 81 5
DSAU114 102 15 67 1 82 5
DSAU125 57 3.3 300 6 73 8
DSAU121 53 5 200 4 79 8
DSAU122 54 9 110 2 77 8
DSAU123 53 12 84 1.5 80 5
DSAU124 52 15 67 1 80 5
5
(4.5 ~ 5.5)
12
(10.8 ~ 13.2)
24
(21.6 ~ 26.4)
7
PACKAGE: TAPE & REEL (5V/12V)
8
PACKAGE: TAPE & REEL (24V)
9
MECHANICAL DRAWING
(5V/12V) (24V)
2143
7856
8.0 [0.31"]
11.2 [0.44"]
0.60 [0.024"]
TOP VIEW
2.0 [0.08"]
6.8 [0.27"]
12.7 [0.50"]
0.3[0.01"]
7.6 [0.30"]
2.54
[0.100"]
SIDE VIEW
Notes:
Dimensions are in millimeters and inches
Tolerance: X.X ± 0.5mm (X.XX ± 0.02 in)
X.XX ± 0.25mm (X.XXX ± 0.010 in)
CONTACT: www.delta.com.tw/dcdc
USA:
Telephone:
East Coast: (888) 335 8201
West Coast: (888) 335 8208
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +41 31 998 53 11
Fax: +41 31 998 53 53
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107 ext 6220~6224
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any
infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any
patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice.
Pin Single Output
1 -Vin
2 +Vin
3 NA
4 -Vout
5 +Vout
6 NA
7 NA
8 NA
2143
7856
12.7 [0.50"]
8.3 [0.33"]
11.2 [0.44"]
0.6 [0.024"]
TOP VIEW
[0.100"]
2.54
7.6 [0.30"]
0.3 [0.01"] 5.8 [0.23"]
7.8 [0.31"]
SID E VIEW
