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Analog Devices Semiconductor Electronic Components Datasheet

ADDC02805SA Datasheet

28 V/66 W/100 W DC/DC Converters with Integral EMI Filter

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a
28 V/66 W/100 W DC/DC Converters
with Integral EMI Filter
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
ADDC02803SC/ADDC02805SA
FUNCTIONAL BLOCK DIAGRAM
– SENSE
+ SENSE
ADJUST
STATUS
VAUX
INHIBIT
SYNC
ISHARE
TEMP
–VIN
+VIN
OUTPUT SIDE
CONTROL
CIRCUIT
INPUT SIDE
CONTROL
CIRCUIT
EMI FILTER
ADDC02803SC
ADDC02805SA
FIXED
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
OUTPUT
FILTER
RETURN
RETURN
RETURN
+VOUT
+VOUT
+VOUT
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.
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 V–50 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
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.
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


Analog Devices Semiconductor Electronic Components Datasheet

ADDC02805SA Datasheet

28 V/66 W/100 W DC/DC Converters with Integral EMI Filter

No Preview Available !

ADDC02803SC/ADDC02805SA–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (TC = +25؇C, VIN = 28 V dc ؎ 0.5 V dc, unless otherwise noted; full temperature range is
–55؇C to +90؇C; all temperatures are case and TC is the temperature measured at the center of the package bottom.)
Parameter
Case Test
Temp Level Conditions
ADDC02803SC ADDC02805SA
Min Typ Max Min Typ Max Units
INPUT CHARACTERISTICS
Steady State Operating Input Voltage Range1
Abnormal Operating Input Voltage Range
(Per MIL-STD-704D)1
Input Overvoltage Shutdown
No Load Input Current
Disabled Input Current
Full
Full
+25°C
+25°C
Full
VI
VI
I
I
VI
OUTPUT CHARACTERISTICS2, 3
Output Voltage (VO)
Line Regulation
Load Regulation
Output Ripple/Noise4
Output Current (IO)
Output Overvoltage Protection
Output Current Limit
Output Short Circuit Current
+25°C
Full
Full
+25°C
+25°C
+25°C
Full
+25°C
+25°C
+25°C
I
VI
VI
V
V
I
VI
V
V
I
IO = 2 A to 20 A
IO = 2 A to 16 A
IO = 2 A to 20 A, VIN = 18 V to 40 V dc
IO = 2 A to 20 A, VIN = 18 V to 40 V dc
IO = 2 A to 16 A, VIN = 16 V to 50 V dc
IO = 20 A, VIN = 18 V to 40 V dc
VIN = 28 V dc, IO = 2 A to 20 A
IO = 20 A, 5 kHz – 2 MHz BW
VIN = 18 V to 40 V dc
IO = 20 A, Open Remote Sense Connection
VO = 90% VOUT Nom
18 28 40 18 28 40 V
16 50 16
50 52.5 55 50
90
0.85 2.0
50
52.5 55
90
0.85 2.0
V
V
mA
mA
3.26 3.30 3.34
3.2 3.4
3.2 3.4
1
1
15 35
2 21.2
145
39
5.00 5.025
4.925
4.925
1
1
15
2
125
130
5.05
5.125
5.125
50
20
35
V
V
V
mV
mV
mV p-p
A
% VO Nom
% IO max
A
ISOLATION CHARACTERISTICS
Isolation Resistance
+25°C I
Input to Output or Any Pin to Case at 500 V dc 100
100
M
DYNAMIC CHARACTERISTICS4
Output Voltage Deviation Due to
Step Change in Load
Response Time Due to Step Change in Load
+25°C
+25°C
V
V
Soft Start Turn-On Time5
+25°C I
IO = 10 A to 20 A or 20 A to 10 A di/dt = 0.5 A/µs
IO = 10 A to 20 A or 20 A to 10 A, di/dt = 0.5 A/µs,
Time for VOUT to Return within 2% of Final Value
IO = 20 A, From Inhibit High to Status High
350
135
14
500
125
7 20
mV
µs
ms
THERMAL CHARACTERISTICS
Efficiency
Hottest Junction Temperature6
+25°C
Max
Min
+25°C
Max
Min
+90°C
I
VI
VI
I
VI
VI
V
IO = 12 A
IO = 12 A
IO = 12 A
IO = 20 A
IO = 20 A
IO = 20 A
IO = 20 A
75 79
75
72
74 77
74
73
110
77 80
77
75
77 79
77
75
110
%
%
%
%
%
%
°C
CONTROL CHARACTERISTICS
Clock Frequency
ADJUST (Pin 3) V ADJ
STATUS (Pin 4)
VOH
VOL
VAUX (Pin 5)
VO (nom)
INHIBIT (Pin 6)
VIL
IIL
VI (Open Circuit)
SYNC (Pin 7)7
VIH
IIH
ISHARE (Pin 8)
TEMP (Pin 9)
Full VI
+25°C I
+25°C I
+25°C I
+25°C I
+25°C I
+25°C I
+25°C I
+25°C
+25°C
+25°C
+25°C
I
I
I
V
IO = 2 A
IOH = 400 µA
IOL = 1 mA
IAUX = 5 mA, Load Current = 20 A
VIL = 0.5 V
VIH = 7.0 V
IO = 20 A
0.85 0.99 0.85
0.99 MHz
1.26 1.32 1.38 1.92 2.04 2.10 V
2.4 4.0
2.4 4.0
V
0.15 0.7
0.15 0.7 V
13.2 13.7 14.2 14.3 14.7 15.3 V
0.5 0.5 V
1.2 1.2 mA
15 15 V
4.0 4.0
V
175 175 µA
2.62 2.72 2.82 2.75 2.82 2.95 V
3.90 3.90 V
NOTES
150 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.
2Measured at the remote sense points.
3Unit regulates output voltage to zero load.
4CLOAD = 0.
5Output is fully loaded into a constant resistive load.
6Refer to section entitled Thermal Characteristics for more information.
7Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).
Specifications subject to change without notice.
–2– REV. A


Part Number ADDC02805SA
Description 28 V/66 W/100 W DC/DC Converters with Integral EMI Filter
Maker Analog Devices
Total Page 18 Pages
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