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ASA2805S

ADVANCED ANALOG HIGH RELIABILITY HYBRID DC/DC CONVERTERS


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ASA2805S pdf
PD - 94539
ADVANCED ANALOG
HIGH RELIABILITY
HYBRID DC/DC CONVERTERS
ASA28XXS SERIES
28V Input, Single Output
Description
The ASA28XXS Series of DC/DC converters are high
reliability thick film hybrid converters that use flyback
topology operating at a nominal frequency of 550Khz.
High input to output isolation is achieved through the
use of transformers in the flyback power and feedback
circuits.
ASA
The advanced feedback design provides fast loop re- Features
sponse for superior line and load transient characteris-
tics and offers greater reliability than devices incorpo-
rating optical feedback circuits.
n Up To 5 Watt Output Power
n 5, 12,15 Volt Outputs
n High Reliability
This device is designed to meet MIL-STD-704D input n Wide Input Voltage Range -16 To 40 Volts
requirements offering full performance over a 16 to 40 n Indefinite Short Circuit and Overload
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volt input range. Output Power of up to 5 watts is avail-
Protection
able.
n Popular Industry Standard Pin-Out
n Military Screening Available
Connecting the inhibit pin (pin 5) to the input common
(pin 7) will cause the converter to shut down. It is rec-
ommended that the inhibit pin be driven by an open
collector device capable of sinking at least 400µA. The
open circuit voltage of the inhibit pin is 11.5 ±0.5 volts.
n Parallel Seam Welded Package
n No External Capacitors Required
n Input Voltage Surge Protected to
MIL-STD-704A
n Under Voltage Lockout
n Available as Standard Military Drawing
These converters are manufactured in a facility fully
qualified to MIL-PRF-38534. All processes used to
manufacture these converters have been qualified
thereby enabling Advanced Analog to deliver fully com-
pliant devices. Three standard temperature grades are
offered with the screening options. Refer to Screening
Level section. The CH grade converters are fully com-
pliant to MIL-PRF-38534 for class H. The HB grade
converters are processed with the same screening as
the CH grade, but do not have class H element evalua-
tion as required by MIL-PRF-38534. These two grades
are fully tested and operate over the full military tem-
perature range without derating of output power. A
commercial grade is also available. Variations in elec-
trical, mechanical and screening requirements can be
accommodated. Extensive computer simulation using
complex modeling allows design modifications
to be examined. Contact Advanced Analog with
specific requirements.
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1
09/11/02
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ASA2805S pdf
ASA28XXS Series
Specifications
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Power Output
Soldering
Temperature Range
-0.5 V to 50 V Continuous. 80 V, 100 mSec
Internally limited (6.5 Wtypical)
300°C for 10 Sec.
Operating -55°C to +125°C Case
Storage -65°C to +150°C
TEST
Output voltage
Conditions
-55° TC +125°C
VIN = 28V dc ±5% CL = 0
unless otherwise specified
IOUT = 0
Output current 1
Output ripple voltage 2
VIN = 16, 28, and 40 V dc
VIN = 16, 28 and 40 V dc
Line regulation
Load regulation
Input current
Input ripple current 2
Efficiency
VIN = 16, 28, and 40 V dc
IOUT = 0, 50%, 100% IMAX
VIN = 16, 28, and 40 V dc
IOUT = 0, 50%, 100% IMAX
IOUT = 0 Pin 5 to Pin 7
IOUT = 0 Pin5 open
I = IOUT
MAX
I = IOUT
MAX
Isolation - Input to
output or any pin to
case
Capacitive load 3, 4
Power dissipation, load
fault
Switching frequency 4
VTEST 500 Vdc, Tc= +25°C
No effect on dc
performance, Tc = +25°C
Overload 5
Short circuit
I = IOUT
MAX
Output response to step
transient load changes
6
½ IMAX ó IMAX
0 mA ó IMAX
Recovery time, step
transient load changes
Output response
transient step line
changes 4 8
I = IOUT
MAX
0 mA ó ½ IMAX
Input step 16 ó 40 V dc
I = IOUT
MAX
Group A
Subgroups
1
2, 3
1, 2, 3
1
2, 3
1
2, 3
1
2, 3
1, 2, 3
1, 2, 3
1
2, 3
1
4
1, 2, 3
4, 5, 6
4
5, 6
4
5, 6
4, 5, 6
4, 5, 6
Recovery time transient
step line changes 4, 7, 8
Turn on overshoot
Turn on delay 9
Load fault recovery 4
Input step 16 ó 40 V dc
I = IOUT
MAX
IOUT = 0 mA, IMAX
IOUT = 0 or IMAX
4, 5, 6
4, 5, 6
4, 5, 6
4, 5, 6
For Notes to Specifications, refer to page 3
2
ASA2805S/xx
Min
4.95
4.90
66
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100
Max
5.05
5.10
1000
190
475
25
50
25
50
18
50
100
500
-300
-450
-500
-750
500
4.0
2.0
600
+300
+450
+500
+700
200
1
500
800
600
20
20
ASA2812S/xx
Min
11.88
11.76
71
68
100
Max
12.12
12.24
417
200
290
±25
±50
±25
±50
18
50
100
500
-450
200
4.0
2.0
600
+450
-750
+750
100
1
1000
800
600
25
25
ASA2815S/xx
Min
14.85
14.70
71
68
100
Max
15.15
15.30
333
200
290
±25
±50
±25
±50
18
50
100
Unit
V
mA
mV PP
mV
mV
mA
mA PP
%
M
500
-400
-800
200 µf
4.0 W
2.0
600 KHz
+450
+750
mV pk
100 µS
1 ms
1000 mV pk
800 µS
600 mV pk
25 ms
25 ms
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Datasheet pdf - http://www.DataSheet4U.co.kr/



Part Number ASA2805S
Description ADVANCED ANALOG HIGH RELIABILITY HYBRID DC/DC CONVERTERS
Maker International Rectifier - International Rectifier
Total Page 4 Pages
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