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Электронный компонент: 5962-9760101HXC

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FUNCTIONAL BLOCK DIAGRAM
+V
OUT
RETURN
+ SENSE
ADJUST
STATUS
V
AUX
INHIBIT
SYNC
I
SHARE
TEMP
V
IN
+V
IN
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
SENSE
RETURN
RETURN
+V
OUT
+V
OUT
OUTPUT
FILTER
OUTPUT SIDE
CONTROL
CIRCUIT
INPUT SIDE
CONTROL
CIRCUIT
EMI FILTER
ADDC02803SC
ADDC02805SA
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices 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 Analog Devices.
a
ADDC02803SC/ADDC02805SA
FEATURES
28 V dc Input, 5 V dc @ 20 A, 100 W Output
(ADDC02805SA)
28 V dc Input, 3.3 V dc @ 20 A, 66 W Output
(ADDC02803SC)
Integral EMI Filter Designed to Meet MIL-STD-461D
Low Weight: 80 Grams
NAVMAT Derated
Many Protection and System Features
APPLICATIONS
Commercial and Military Airborne Electronics
Missile Electronics
Space-Based Antennae and Vehicles
Mobile/Portable Ground Equipment
Distributed Power Architecture for Active Array Radar
GENERAL DESCRIPTION
The ADDC02803SC and ADDC02805SA hybrid dc/dc con-
verters with integral EMI filters offer the highest power density
of any dc/dc converter with their features and in their power
range available today. The converters with integral EMI filters
are fixed frequency, 1 MHz square wave switching dc/dc power
supplies. They are not variable frequency resonant converters.
In addition to many protection features, these converters have
system level features that allow them to be used as components
in larger systems as well as stand-alone power supplies. The
units are designed for high reliability and high performance
applications where saving space and/or weight are critical.
The ADDC02803SC and ADDC02805SA are available in
three screening grades; all grades use a hermetically sealed,
molybdenum based hybrid package. Three screening levels
are available, including military SMD.
28 V/66 W/100 W DC/DC Converters
with Integral EMI Filter
PRODUCT HIGHLIGHTS
1. Up to 60 W/cubic inch power density with an integral EMI
filter designed to meet all applicable requirements in MIL-
STD-461D when installed in a typical system setup.
2. Light weight: 80 grams
3. Operational and survivable over a wide range of input condi-
tions: 16 V50 V dc; survives low line, high line and positive
and negative transients. See section entitled: Input Voltage
Range.
4. High reliability; NAVMAT derated
5. Protection features include:
Output Overvoltage Protection
Output Short Circuit Current Protection
Thermal Monitor/Shutdown
Input Overvoltage Shutdown
Input Transient Protection
6. System level features include:
Current Sharing for Parallel Operation
Inhibit Control
Output Status Signal
Synchronization for Multiple Units
Input Referenced Auxiliary Voltage Supply
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1998
ADDC02803SC/ADDC02805SASPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Case
Test
ADDC02803SC
ADDC02805SA
Parameter
Temp
Level Conditions
Min Typ Max
Min
Typ
Max
Units
INPUT CHARACTERISTICS
Steady State Operating Input Voltage Range
1
Full
VI
I
O
= 2 A to 20 A
18
28
40
18
28
40
V
Abnormal Operating Input Voltage Range
(Per MIL-STD-704D)
1
Full
VI
I
O
= 2 A to 16 A
16
50
16
50
V
Input Overvoltage Shutdown
+25
C
I
50
52.5 55
50
52.5
55
V
No Load Input Current
+25
C
I
90
90
mA
Disabled Input Current
Full
VI
0.85 2.0
0.85
2.0
mA
OUTPUT CHARACTERISTICS
2, 3
Output Voltage (V
O
)
+25
C
I
I
O
= 2 A to 20 A, V
IN
= 18 V to 40 V dc
3.26 3.30 3.34
5.00
5.025 5.05
V
Full
VI
I
O
= 2 A to 20 A, V
IN
= 18 V to 40 V dc
3.2
3.4
4.925
5.125 V
Full
VI
I
O
= 2 A to 16 A, V
IN
= 16 V to 50 V dc
3.2
3.4
4.925
5.125 V
Line Regulation
+25
C
V
I
O
= 20 A, V
IN
= 18 V to 40 V dc
1
1
mV
Load Regulation
+25
C
V
V
IN
= 28 V dc, I
O
= 2 A to 20 A
1
1
mV
Output Ripple/Noise
4
+25
C
I
I
O
= 20 A, 5 kHz 2 MHz BW
15
35
15
50
mV p-p
Output Current (I
O
)
Full
VI
V
IN
= 18 V to 40 V dc
2
21.2
2
20
A
Output Overvoltage Protection
+25
C
V
I
O
= 20 A, Open Remote Sense Connection
145
125
% V
O
Nom
Output Current Limit
+25
C
V
V
O
= 90% V
OUT
Nom
130
% I
O
max
Output Short Circuit Current
+25
C
I
39
35
A
ISOLATION CHARACTERISTICS
Isolation Resistance
+25
C
I
Input to Output or Any Pin to Case at 500 V dc
100
100
M
DYNAMIC CHARACTERISTICS
4
Output Voltage Deviation Due to
Step Change in Load
+25
C
V
I
O
= 10 A to 20 A or 20 A to 10 A di/dt = 0.5 A/
s
350
500
mV
Response Time Due to Step Change in Load
+25
C
V
I
O
= 10 A to 20 A or 20 A to 10 A, di/dt = 0.5 A/
s,
135
125
s
Time for V
OUT
to Return within 2% of Final Value
Soft Start Turn-On Time
5
+25
C
I
I
O
= 20 A, From Inhibit High to Status High
1
4
7
20
ms
THERMAL CHARACTERISTICS
Efficiency
+25
C
I
I
O
= 12 A
75
79
77
80
%
Max
VI
I
O
= 12 A
75
77
%
Min
VI
I
O
= 12 A
72
75
%
+25
C
I
I
O
= 20 A
74
77
77
79
%
Max
VI
I
O
= 20 A
74
77
%
Min
VI
I
O
= 20 A
73
75
%
Hottest Junction Temperature
6
+90
C
V
I
O
= 20 A
110
110
C
CONTROL CHARACTERISTICS
Clock Frequency
Full
VI
I
O
= 2 A
0.85
0.99
0.85
0.99
MHz
ADJUST (Pin 3) V ADJ
+25
C
I
1.26 1.32 1.38
1.92
2.04
2.10
V
STATUS (Pin 4)
V
OH
+25
C
I
I
OH
= 400
A
2.4
4.0
2.4
4.0
V
V
OL
+25
C
I
I
OL
= 1 mA
0.15 0.7
0.15
0.7
V
V
AUX
(Pin 5)
V
O
(nom)
+25
C
I
I
AUX
= 5 mA, Load Current = 20 A
13.2 13.7 14.2
14.3
14.7
15.3
V
INHIBIT (Pin 6)
V
IL
+25
C
I
0.5
0.5
V
I
IL
+25
C
I
V
IL
= 0.5 V
1.2
1.2
mA
V
I
(Open Circuit)
+25
C
I
15
15
V
SYNC (Pin 7)
7
V
IH
+25
C
I
4.0
4.0
V
I
IH
+25
C
I
V
IH
= 7.0 V
175
175
A
I
SHARE
(Pin 8)
+25
C
I
I
O
= 20 A
2.62 2.72 2.82
2.75
2.82
2.95
V
TEMP (Pin 9)
+25
C
V
3.90
3.90
V
NOTES
1
50 V dc upper limit rated for transient condition of up to 50 ms. 16 V dc lower limit rated for continuous operation during emergency condition. Steady state and
abnormal input voltage range require source impedance sufficient to insure input stability at low line. See sections entitled System Instability Considerations and Input
Voltage Range.
2
Measured at the remote sense points.
3
Unit regulates output voltage to zero load.
4
C
LOAD
= 0.
5
Output is fully loaded into a constant resistive load.
6
Refer to section entitled Thermal Characteristics for more information.
7
Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).
Specifications subject to change without notice.
REV. A
2
(T
C
= +25 C, V
IN
= 28 V dc
0.5 V dc, unless otherwise noted; full temperature range is
55 C to +90 C; all temperatures are case and T
C
is the temperature measured at the center of the package bottom.)
ADDC02803SC/ADDC02805SA
REV. A
3
ABSOLUTE MAXIMUM RATINGS*
INHIBIT . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V dc, 0.5 V dc
SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 V dc, 0.5 V dc
I
SHARE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V dc, 0.5 V dc
TEMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V dc, 0.3 V dc
Common-Mode Voltage, Input to Output . . . . . . . . . 500 V dc
Lead Soldering Temp (10 sec) . . . . . . . . . . . . . . . . . . . +300
C
Storage Temperature . . . . . . . . . . . . . . . . . . 65
C to +150
C
Maximum Junction Temperature . . . . . . . . . . . . . . . . +150
C
Maximum Case Operating Temperature . . . . . . . . . . . +125
C
*Absolute maximum ratings are limiting values, to be applied individually, and
beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied. Exposure of
absolute maximum rating conditions for extended periods of time may affect
device reliability.
ORDERING INFORMATION
Operating
Temperature
Device
Range (Case)
Description
ADDC02803SCKV
40
C to +85
C
Hermetic Package
ADDC02803SCTV
55
C to +90
C
Hermetic Package
5962-9760101HXC
(ADDC2803SCTV/QMLH) 55
C to +125
C Hermetic Package
ADDC02805SAKV
40
C to +85
C
Hermetic Package
ADDC02805SATV
55
C to +90
C
Hermetic Package
5962-9570701HXC
(ADDC2805SATV/QMLH) 55
C to +125
C Hermetic Package
EXPLANATION OF TEST LEVELS
Test Level
I
100% production tested.
II
100% production tested at +25
C, and sample tested at
specified temperatures.
III
Sample tested only.
IV
Parameter is guaranteed by design and characterization
testing.
V
Parameter is a typical value only.
VI
All devices are 100% production tested at +25
C. 100%
production tested at temperature extremes for military
temperature devices; guaranteed by design and charac-
terization testing for industrial devices.
PIN DESCRIPTIONS
Pin
No.
Name
Function
1
SENSE
Feedback loop connection for remote sensing
output voltage. Must always be connected to
output return for proper operation.
2
+SENSE
Feedback loop connection for remote sensing
output voltage. Must always be connected to
+V
OUT
for proper operation.
3
ADJUST
Adjusts output voltage setpoint.
4
STATUS
Indicates output voltage is within
5% of
nominal. Active high referenced to SENSE
(Pin 1).
5
V
AUX
Low level dc auxiliary voltage supply refer-
enced to input return (Pin 10).
6
INHIBIT
Power Supply Inhibit. Active low and refer-
enced to input return (Pin 10).
7
SYNC
Clock synchronization input for multiple
units; referenced to input return (Pin 10).
8
I
SHARE
Current share pin which allows paralleled
units to share current typically within
5% at
full load; referenced to input return (Pin 10).
9
TEMP
Case temperature indicator and temperature
shutdown override; referenced to input return
(Pin 10).
10
V
IN
Input Return.
11
+V
IN
+28 V Nominal Input Bus.
12
+V
OUT
+5 V dc Output (ADDC02805SA).
+3.3 V dc Output (ADDC02803SC).
13
+V
OUT
+5 V dc Output (ADDC02805SA).
+3.3 V dc Output (ADDC02803SC).
14
+V
OUT
+5 V dc Output (ADDC02805SA).
+3.3 V dc Output (ADDC02803SC).
15
RETURN Output Return.
16
RETURN Output Return.
17
RETURN Output Return.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Therefore, proper ESD precautions are recommended to avoid performance degradation or loss
of functionality.
PIN CONFIGURATION
1
11
12
17
TOP
VIEW
WARNING!
ESD SENSITIVE DEVICE
ADDC02803SC/ADDC02805SATypical Performance Curves
REV. A
4
MAXIMUM POWER OUTPUT Watts
INPUT VOLTAGE V
16.0
15.5
30
55
35
40
45
50
14.0
13.5
13.0
15.0
14.5
60
65
70
80
90
100
ADDC02803SC
ADDC02805SA
Figure 4. Low Line Dropout vs. Load at +90
C Case
Temperature
T
CASE
5.100
5.050
4.900
55
125
35
15
5
25
45
65
85
105
5.000
4.950
V
OUT
Figure 5. Output Voltage vs. Case Temperature (
C)
(ADDC02805SA)
V
OUT
T
CASE
3.340
3.320
3.260
55
75
45 35 25 15 5
5
15 25 35 45
55 65
3.300
3.280
85 95
Figure 6. Output Voltage vs. Case Temperature (
C)
(ADDC02803SC)
OUTPUT POWER WATTS
64
5
70
10
15
20
25
30
35
40
45
50
55
60
65
OUTPUT POWER Watts
82
68
10
100
20
30
40
50
60
70
80
90
80
76
74
72
70
78
EFFICIENCY %
40V
18V
28V
V
IN
= 28V
V
O
= 5V
T
C
= +25 C
Figure 1. Efficiency vs. Line and Load at +25
C
(ADDC02805SA)
OUTPUT POWER Watts
80
70
64
5
70
10
15
20
25
30
35
40
45
50
55
60
65
78
72
68
66
76
74
18V
28V
40V
Figure 2. Efficiency vs. Line and Load at +25
C
(ADDC02803SC)
T
CASE
C
80
79
75
55
EFFICIENCY %
35
15
5
25
45
65
78
77
76
85
81
ADDC02803SC
ADDC02805SA
Figure 3. Efficiency vs. Case Temperature (
C)
(at Nominal V
IN
, 75% Max Load)
ADDC02803SC/ADDC02805SA
REV. A
5
10
0%
100
90
V
O
V
INHIBIT
1V
10V
2ms
Figure 7. Output Voltage Transient During Turn-On with
Minimum Load Displaying Soft Start When Supply Is
Enabled (ADDC02805SA)
10
100
90
V
O
V
INHIBIT
1V
5V
0.2ms
0%
Figure 8. Output Voltage Transient During Turn-On with
Minimum Load Displaying Soft Start When Supply Is
Enabled (ADDC02803SC)
10
0%
100
90
V
O
I
O
100mV
10A
50 s
Figure 9. Output Voltage Transient Response to
a 10 A to 20 A Step Change in Load with Zero Load
Capacitance (ADDC02805SA)
10
100
90
V
O
I
O
10A
50 s
50mV
50mV
0%
Figure 10. Output Voltage Transient Response to
a 10 A to 20 A Step Change in Load with Zero Load
Capacitance (ADDC02803SC)
FREQUENCY Hz
0
10
90
10
50k
100
1k
10k
40
60
70
80
20
30
50
100
|AS| dB
Figure 11. Audio Susceptibility (Magnitude of V
OUT
/V
IN
)
(ADDC02805SA)
FREQUENCY Hz
0
AS dB
100
10
50k
100
1k
10k
90
80
70
60
50
40
30
20
10
Figure 12. Audio Susceptibility (Magnitude of V
OUT
/V
IN
)
(ADDC02803SC)