100 WATT ASD SINGLE SERIES
DC/DC CONVERTERS
Features
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Description
The 4:1 Input Voltage 100 W single ASD Series of DC/DC
converters provide precisely regulated dc outputs. The
output voltage is fully isolated from the input, allowing the
output to be positive or negative polarity and with various
ground connections. The ASD Series utilizes an
insulated metal substrate design in an industry standard
1/2 brick case size to meet the most rigorous require-
ments of COTS and thermally challenging industrial
applications.
The 4:1 Input Voltage 100 Watt ASD Series includes
remote sensing, output trim, and remote ON/OFF.
Threaded-through holes are provided to allow easy
mounting or add a heat sink for extended temperature
use.
Selection Chart
Model
ASD100-24S3.3W
ASD100-24S5W
ASD100-24S12W
ASD100-24S15W
ASD100-24S24W
ASD100-48S3.3W
ASD100-48S5W
ASD100-48S12W
ASD100-48S15W
ASD100-48S24W
Input Range
VDC
Min
9
9
9
9
9
18
18
18
18
18
Max
36
36
36
36
36
75
75
75
75
75
Iin
ADC
TYP
4.24
4.91
4.85
4.79
4.79
2.10
2.42
2.39
2.37
2.37
Vout
VDC
3.3
5
12
15
24
3.3
5
12
15
24
Iout
ADC
25
20
8.33
6.67
4.13
25
20
8.33
6.67
4.13
4:1 Input voltage range
High power density
Small size 2.4” x 2.28” x 0.55”
Excellent thermal performance with metal baseplate
Volt-seconds clamp and fast over voltage protection
Pulse-by-pulse current limiting, short circuit frequency
foldback, dead short shut down
Over-temperature protection
Auto-softstart
Low noise
Industry-standard pinout
Constant frequency during normal operation
Remote sense
Remote ON/OFF
Super energy saving, 8 mA input idle current
Output trim with very low temperature coefficient
Water washable, wide humidity application
Good shock and vibration damping
Available in both RoHS and Non-RoHS construction.
See ordering info below model selection chart.
Default ON/OFF logic is positive.
Add -N to the model number to order negative On/Off logic.
To order RoHS, add (RoHS) to part number.
375 Forbes Blvd. Mansfield, MA 02048
Ph: 800-823-8082
Fax: 508-339-0375
www.astrodyne.com
Email: sales@astrodyne.com
100 WATT ASD SINGLE SERIES
DC/DC CONVERTERS
Unless otherwise stated, these specifications apply for baseplate temperature
TB=23±2ºC,
nominal input voltage, and rated full load. (1)
Input Parameters
Model
Voltage Range
Input Overvoltage (100 ms)
Input Ripple Rejection (120Hz)
Undervoltage Lockout
Input Reverse Voltage Protection
Input Current
Inrush Current
Reflected Ripple, 12µH
Source Impedance (3)
Efficiency
Switching Frequency
Recommended Fuse
No Load
100% Load
TYP
TYP
MAX
TYP
TYP
TYP
79
85
35
4.24
35
4.91
MIN
TYP
MAX
MAX
TYP
ASD100-24S3.3W
ASD100-24S5W
ASD100-24S12W ASD100-24S15W ASD100-24S24W
Units
V
V
dB
9
24
36
50
60
Yes
Yes
35
4.85
0.5
30
86
260
(2)
83
87
35
4.79
35
4.79
mA
A
A
2
s
mA
P
-
P
%
kHz
A
Input Parameters
Model
Voltage Range
Input Overvoltage (100 mSec)
Input Ripple Rejection (120Hz)
Undervoltage Lockout
Input Reverse Voltage Protection
Input Current
Inrush Current
Reflected Ripple, 12µH
Source Impedance (3)
Efficiency
Switching Frequency
Recommended Fuse
No Load
100% Load
TYP
TYP
MAX
TYP
TYP
TYP
81
85
25
2.10
25
2.42
MIN
TYP
MAX
MAX
TYP
ASD100-48S3.3W
ASD100-48S5W
ASD100-48S12W ASD100-48S15W ASD100-48S24W
Units
V
V
dB
18
48
75
80
60
Yes
Yes
25
2.39
0.5
30
88
260
(2)
88
89
25
2.37
25
2.37
mA
A
A
2
s
mA
P
-
P
%
kHz
A
* Absolute Maximum Ratings. Caution: Stresses in excess of the Absolute Maximum Ratings can cause permanent damage to the device (see Note 1.)
375 Forbes Blvd. Mansfield, MA 02048
Ph: 800-823-8082
Fax: 508-339-0375
www.astrodyne.com
Email: sales@astrodyne.com
100 WATT ASD SINGLE SERIES
DC/DC CONVERTERS
Model
Output Voltage
Output Voltage
Setpoint Accuracy
Turn On Overshoot Min-Max Load
Temperature
Coefficient
Noise (8)
Load Current (4)
Load Transient Overshoot (7)
Load Transient Recovery Time (6)
Load Regulation (5)
Min-Max Load
Line Regulation
Vin = Min-Max
Overvoltage Protection (OVP)
Threshhold
OVP Type - Non-latching
Open Loop Overvoltage Clamp
Output Current Limit
Vout = 90% of Vout-nom
Output Short Circuit Current
Vout = 0.25V
MAX
TYP
TYP
MAX
TYP
TYP
MIN
MAX
TYP
TYP
TYP
MAX
TYP
MAX
MIN
MAX
TYP
TYP
MAX
0.005
0.01
75
20
2.5
25
ASD100-24S3.3W
ASD100-48S3.3W
Output Parameters
ASD100-24S5W
ASD100-48S5W
ASD100-24S12W ASD100-24S15W ASD100-24S24W
ASD100-48S12W ASD100-48S15W ASD100-48S24W
Units
V
%
%
3.3
5
12
±1
0
15
24
0.003
0.005
75
20
2
20
0.003
0.005
150
60
0.833
8.33
3
200
0.02
0.2
0.01
0.1
115
135
120
140
150
0.003
0.005
150
60
0.667
6.67
0.003
0.005
250
100
0.413
4.13
%/ºC
mV
P
-
P
mV
RMS
A
%
µs
%
%
%
%
%
Notes:
(1) Refer to the Application Notes for the
definition
of terms,
measurement circuits, and other information.
(2) Refer to the Application Notes for information of fusing.
For inrush current, refer to the specifications above.
(3) 33µF capacitor connected
between
the
two
“Input” pins. Then
insert current sensor in series
with
1.0µH inductor
between
100µF and the source. The
reflected
ripple current is measured
over a 5 Hz to 20 MHz
bandwidth.
(current sensor is located
between the converter input pin and the 1.0 µH inductor)
(4) Optimum performance is
obtained when
this
power
supply is
operated
within
the minimum to maximum load
specifications.
No damage to the module
will
occur
when
the output is operated
at less than minimum load,
however, below
minimum load the
dynamic response
will
degrade. Operation
below
minimum load
is not recommended.
(5) Load regulation is
defined
as the output voltage change
when
changing load current from a maximum to minimum.
(6) Load Transient Recovery Time is
defined
as the time for the
output to settle from a 50% to 75% step load change to a 1%
error band (rise time of step = 2µs).
(7) Load Transient Overshoot is
defined
as the peak overshoot
during a transient as defined in the Note 6 above.
(8) Noise is measured per the Application Notes. Output
noise is measured
with
a 10µF tantalum capacitor in parallel
with
a 0.1µF ceramic capacitor connected across the output pins.
Measurement bandwidth is 0-20MHz.
(9) When an external ON/OFF
switch
is used, such as open collector
switch,
logic high requires the
switch
to
be
high-impedance.
Switch
leakage currents greater than 10µA may
be sufficient
to
trigger the ON/OFF to the logic-low state.
(10) Most
switches would be suitable
for the logic ON/OFF control. In
case there is a
problem
you can make the
following
estimations and
then leave some margin.
When open collector is used for logic high, “Open Circuit Voltage at
ON/OFF Pin”, “Output Resistance” and “External Leakage Current
Allowed
for Logic High” are used to estimate the high impedance
requirement of open collector.
When
switch
is used for logic low, “Open Circuit Voltage at ON/
OFF Pin”, “Output Resistance” and “LOW Logic Level” are used to
estimate the low impedance requirement of the switch.
(11) Thermal impedance is tested
with
the converter mounted vertically
and facing another printed circuit
board
1/2 inch
away.
If converter
is mounted horizontally
with
no
obstruction,
thermal impedance is
approximately 8°C/W.
(12) Water Washability - These DC/DC converters are designed to
withstand
most
solder/wash
processes. Careful attention should
be
used
when
assessing the
applicability
in your
specific
manufacturing
process. Converters are not hermetically sealed.
(13) Torque fasteners into threaded mounting inserts at 12
in.lbs.
or less.
Greater torque may result in damage to unit and void the warranty.
(14) Input impedance on these units needs to
be
kept to a minimum. The
9-36Vdc DC units need a maximum input impedance of 0.2 Ohms
and the 18-75Vdc DC units need a maximum input impedance of 0.8
Ohms. In order to support this requirement, the 9-36Vdc DC units
need 25 µF of capacitance
(low
ESR) for every 1.0 µH of inductance
between
the
power
source and the DC/DC converter. The 18-75Vdc
DC units need 1.7µF of capacitance
(low
ESR) for every 1.0 µH of
inductance
between
the
power
source and the DC/DC converter.
Inductance includes all sources and should take into account input
power lines.
(15) RoHS Compliance:
See Astrodyne Website
www.astrodyne.com
for the complete
RoHS Compliance statement and Application Notes.
The RoHS marking is as follows.
375 Forbes Blvd. Mansfield, MA 02048
Ph: 800-823-8082
Fax: 508-339-0375
www.astrodyne.com
Email: sales@astrodyne.com
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