range of requirements. The circuit design incorpo-
rates a pulse width modulated push-pull topology
operating in the feed-forward mode at a nominal
switching frequency of 250kHz. Input to output
isolation is achieved through the use of transform-
ers in the forward and feedback circuits.
The advanced feedback design provides fast loop
response for superior line and load transient
characteristics and offers greater reliability and
radiation tolerance than devices incorporating
optical feedback circuits.
Three standard temperature grades are offered.
Refer to Part Number section. They are provided
in a standard plug-in package for PC mounting or
in a flanged package for more severe environ-
ments.
These converters are manufactured in a facility
fully qualified to Mil-Std-1772. All processes used
to manufacture these converters have been
qualified to enable Advanced Analog to deliver
compliant devices. Two screening grades are
available to satisfy a wide range of requirements.
The CH grade converters are fully compliant to
Mil-Std-1772 class H. The HB grade converters
are processed to full class H screening but do not
have class H element evaluation as required by
Mil-Std-1772. Both grades are fully tested and
operate over the full military temperature range
without derating of output power. Variations in
electrical, mechanical and screening can be
accommodated. Extensive computer simulation
using complex modeling enables rapid design
modification to be provided. Contact Advanced
Analog with specific requirements.
ATO2800T Series
FEATURES
s
16 to 40 VDC input range (28VDC nominal)
s
5V, ±12V or 5V, ±15V outputs available
s
Indefinite short circuit and overload protection
s
15 watts output power
s
Fast loop response for superior transient characteris-
tics
s
Operating temperature range from -55°C to +125°C
available
s
Popular industry standard pin-out
s
Resistance seam welded case for superior long term
hermeticity
s
Efficiencies up to 81%
s
Shutdown from external signal
s
200,000 hour MTBF at 85°C
SPECIFICATIONS
T
CASE
= -55°C to +85°C, V
IN
= +28 V ±5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Power Output
Soldering
Temperature Range
6
-0.5 V to +50 V
Internally limited, 17.5W typical
300°C for 10 seconds
Operating
-55°C to 115°C case
Storage -65°C to +135°C
Conditions
-55°C - Tc - +85°C, V
IN
= 28 V
DC
Test
Symbol
±5%, C
L
=0, unless otherwise specified
ATO2812T
Limits
Min
Max
ATO2815T
Limits
Min
Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
1
V
OUT
I
OUT
= 0 (main)
I
OUT
= 0 (dual)
1
T
C
= 25°C
Over Temp
T
C
= 25°C
Over Temp
Current
1,2,3
Ripple Voltage
1,4
I
OUT
V
RIP
Power
1,2,3
P
OUT
V
IN
= 16, 28, and 40 V
DC
(main)
V
IN
= 16, 28, and 40 V
DC
(dual)
1
V
IN
= 16, 28, and 40 V
DC
(dual)
BW =
DC
to 2 MHz (main)
V
IN
= 16, 28, and 40 V
DC
BW =
DC
to 2 MHz (dual)
V
IN
= 16, 28, and 40 V
DC
(main)
(+dual)
(-dual)
(total)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
(dual)
I
OUT
= 0, ±84, ±167 mA (dual)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, ±84, ±167 mA (dual)
I
OUT
= 0, inhibit (pin 8)
tied to input return (pin 10)
I
OUT
= 0, inhibit (pin 2) = open
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
BW =
DC
to 2 MHz
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
T
C
= ±25°C
Input to output or any pin to case (except
pin 7) at 500 V
DC
, Tc = +25°C
Over Load, T
C
= +25°C
5
Short Circuit, T
C
= +25°C
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
4.95
5.05
4.90
5.10
±11.88 ±12.12
±11.76 ±12.24
0.0 2000
0.0 ±208
80
40
10
2.5
2.5
15
25
4.95
5.05
V
4.90
5.10
V
±14.85 ±15.15
V
±14.70 ±15.30
V
0.0 2000
mA
0.0 ±167
mA
80
mV p-p
40
10
2.5
2.5
15
25
±35
±75
50
±75
mV p-p
W
W
W
W
mV
mV
mV
mV
mV
REGULATION
Line
1,3
VR
LINE
T
C
= 25°C
Over Temp
Load
1,3
VR
LOAD
±30
±60
50
±60
INPUT
Current
Ripple Current
4
EFFICIENCY
ISOLATION
LOAD FAULT POWER
DISSIPATION
3
SWITCHING FREQUENCY
INHIBIT OPEN CIRCUIT
VOLTAGE
I
IN
I
RIP
E
FF
ISO
P
D
F
S
V
OI
15
40
50
T
C
= +25°C
T
C
= +25°C
T
C
= +25°C
225
9
76
100
8
6
275
13
76
100
15
40
50
mA
mA
mA p-p
%
MΩ
225
9
8
6
275
13
W
W
kHz
V
Notes:
1. Tested at each output.
2. Parameter guaranteed by line and load regulation tests.
3. At least 20 percent of the total output power should be taken from the (+5 volt) main output.
4. Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.
5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power
dissipation.
6. Above 85°C case temperature, derate output power linearly to 0 at 135°C case.
2
SPECIFICATIONS
T
CASE
= -55°C to +105°C, V
IN
= +28 V ±5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Power Output
Soldering
Temperature Range
6
-0.5 V to +50 V
Internally limited, 17.5W typical
300°C for 10 seconds
Operating
-55°C to 125°C case
Storage -65°C to +135°C
Conditions
-55°C - Tc - +105°C, V
IN
= 28 V
DC
Test
Symbol
±5%, C
L
=0, unless otherwise specified
ATO2812T/ES
Limits
Min
Max
ATO2815T/ES
Limits
Min
Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
1
V
OUT
I
OUT
= 0 (main)
I
OUT
= 0 (dual)
1
T
C
= 25°C
Over Temp
T
C
= 25°C
Over Temp
Current
1,2,3
Ripple Voltage
1,4
I
OUT
V
RIP
Power
1,2,3
P
OUT
V
IN
= 16, 28, and 40 V
DC
(main)
V
IN
= 16, 28, and 40 V
DC
(dual)
1
V
IN
= 16, 28, and 40 V
DC
BW =
DC
to 2 MHz (main)
V
IN
= 16, 28, and 40 V
DC
BW =
DC
to 2 MHz (dual)
V
IN
= 16, 28, and 40 V
DC
(main)
(+dual)
(-dual)
(total)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
(dual)
I
OUT
= 0, ±84, ±167 mA (dual)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, ±84, ±167 mA (dual)
I
OUT
= 0, inhibit (pin 8)
tied to input return (pin 10)
I
OUT
= 0, inhibit (pin 2) = open
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
BW =
DC
to 2 MHz
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
T
C
= ±25°C
Input to output or any pin to case (except
pin 7) at 500 V
DC
, Tc = +25°C
Over Load, T
C
= +25°C
5
Short Circuit, T
C
= +25°C
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
4.95
5.05
4.90
5.10
±11.88 ±12.12
±11.76 ±12.24
0.0 2000
0.0 ±208
80
40
10
2.5
2.5
15
25
4.95
5.05
V
4.90
5.10
V
±14.85 ±15.15
V
±14.70 ±15.30
V
0.0 2000
mA
0.0 ±167
mA
80
mV p-p
40
10
2.5
2.5
15
25
±35
±75
50
±75
mV p-p
W
W
W
W
mV
mV
mV
mV
mV
REGULATION
Line
1,3
VR
LINE
T
C
= 25°C
Over Temp
Load
1,3
VR
LOAD
±30
±60
50
±60
INPUT
Current
Ripple Current
4
EFFICIENCY
ISOLATION
LOAD FAULT POWER
DISSIPATION
3
SWITCHING FREQUENCY
INHIBIT OPEN CIRCUIT
VOLTAGE
I
IN
I
RIP
E
FF
ISO
P
D
F
S
V
OI
15
40
50
T
C
= +25°C
T
C
= +25°C
T
C
= +25°C
225
9
76
100
8
6
275
13
76
100
15
40
50
mA
mA
mA p-p
%
MΩ
225
9
8
6
275
13
W
W
kHz
V
Notes:
1. Tested at each output.
2. Parameter guaranteed by line and load regulation tests.
3. At least 20 percent of the total output power should be taken from the (+5 volt) main output.
4. Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.
5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power
dissipation.
6. Above 105°C case temperature, derate output power linearly to 0 at 135°C case.
3
SPECIFICATIONS
T
CASE
= -55°C to +125°C, V
IN
= +28 V ±5% unless otherwise specified
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Power Output
Soldering
Temperature Range
6
-0.5 V to +50 V
Internally limited, 17.5W typical
300°C for 10 seconds
Operating
-55°C to 135°C case
Storage -65°C to +135°C
Conditions
-55°C - Tc - +125°C, V
IN
= 28 V
DC
Test
Symbol
±5%, C
L
=0, unless otherwise specified
ATO2812T/HB
Limits
Min
Max
ATO2815T/HB
Limits
Min
Max
Units
STATIC CHARACTERISTICS
OUTPUT
Voltage
1
V
OUT
I
OUT
= 0 (main)
I
OUT
= 0 (dual)
1
T
C
= 25°C
Over Temp
T
C
= 25°C
Over Temp
Current
1,2,3
Ripple Voltage
1,4
I
OUT
V
RIP
Power
1,2,3
P
OUT
V
IN
= 16, 28, and 40 V
DC
(main)
V
IN
= 16, 28, and 40 V
DC
(dual)
1
V
IN
= 16, 28, and 40 V
DC
BW =
DC
to 2 MHz (main)
V
IN
= 16, 28, and 40 V
DC
BW =
DC
to 2 MHz (dual)
V
IN
= 16, 28, and 40 V
DC
(main)
(+dual)
(-dual)
(total)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
(dual)
I
OUT
= 0, ±84, ±167 mA (dual)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, 1000, 2000 mA (main)
V
IN
= 16, 28, and 40 V
DC
I
OUT
= 0, ±84, ±167 mA (dual)
I
OUT
= 0, inhibit (pin 8)
tied to input return (pin 10)
I
OUT
= 0, inhibit (pin 2) = open
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
BW =
DC
to 2 MHz
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
T
C
= ±25°C
Input to output or any pin to case (except
pin 7) at 500 V
DC
, Tc = +25°C
Over Load, T
C
= +25°C
5
Short Circuit, T
C
= +25°C
I
OUT
= 2000 mA (main)
I
OUT
= ±167 mA (dual)
4.95
5.05
4.90
5.10
±11.88 ±12.12
±11.76 ±12.24
0.0 2000
0.0 ±208
80
40
10
2.5
2.5
15
25
4.95
5.05
V
4.90
5.10
V
±14.85 ±15.15
V
±14.70 ±15.30
V
0.0 2000
mA
0.0 ±167
mA
80
mV p-p
40
10
2.5
2.5
15
25
±35
±75
50
±75
mV p-p
W
W
W
W
mV
mV
mV
mV
mV
REGULATION
Line
1,3
VR
LINE
T
C
= 25°C
Over Temp
Load
1,3
VR
LOAD
±30
±60
50
±60
INPUT
Current
Ripple Current
4
EFFICIENCY
ISOLATION
LOAD FAULT POWER
DISSIPATION
3
SWITCHING FREQUENCY
INHIBIT OPEN CIRCUIT
VOLTAGE
I
IN
I
RIP
E
FF
ISO
P
D
F
S
V
OI
15
40
50
T
C
= +25°C
T
C
= +25°C
T
C
= +25°C
225
9
76
100
8
6
275
13
76
100
15
40
50
mA
mA
mA p-p
%
MΩ
225
9
8
6
275
13
W
kHz
V
Notes:
1. Tested at each output.
2. Parameter guaranteed by line and load regulation tests.
3. At least 20 percent of the total output power should be taken from the (+5 volt) main output.
4. Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.
5. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power
dissipation.
6. Above 125°C case temperature, derate output power linearly to 0 at 135°C case.
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