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Analog Devices Semiconductor Electronic Components Datasheet

ADDC02808PB Datasheet

28V 200W Pulsed DC/DC Converter

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a
28 V, 200 W Pulsed DC/DC Converter
with Integral EMI Filter
ADDC02808PB
FEATURES
FUNCTIONAL BLOCK DIAGRAM
28 V dc Input, 8 V dc @ 25 A, 200 W Pulse Output
Integral EMI Filter
– SENSE
Ultrafast Transient Response
Minimal Output Voltage Deviation
+ SENSE
ADJUST
OUTPUT SIDE
CONTROL
CIRCUIT
Low Weight: 80 Grams
STATUS
RETURN
NAVMAT Derated
VAUX
FIXED
RETURN
Many Protection and System Features
APPLICATIONS
Distributed Power Architecture for Driving T/R Modules
Motor and Actuator Drivers
INHIBIT
SYNC
ISHARE
TEMP
–VIN
+VIN
INPUT SIDE
CONTROL
CIRCUIT
EMI FILTER
FREQUENCY
DUAL
INTERLEAVED
POWER TRAIN
OUTPUT
FILTER
RETURN
+VOUT
+VOUT
+VOUT
OBSGENERAL DESCRIPTION
OThe ADDC02808PB hybrid military dc/dc converter is com-
pensated specifically for pulse applications where fast transient
Lresponse and minimum output voltage deviation are required.
EIt is also designed to deliver very high, pulsed output power.
The unit is designed for high reliability and high performance
TEapplications where saving space and/or weight are critical.
PRODUCT HIGHLIGHTS
1. 120 W/cubic inch pulsed power density with an integral EMI
filter
2. Ultrafast transient response time with minimum output
voltage deviation
3. Light weight: 80 grams
The ADDC02808PB has been characterized over a wide variety 4. Operational and survivable over a wide range of input
of load conditions. Its transient response has been set to insure
conditions: 16 V–50 V dc; survives low line, high line
output stability over a broad range of load capacitance. For
5. High reliability; NAVMAT derated
applications that require factory modified compensation
optimized for a specific load, or for applications that require a
different output voltage than 8 V dc, contact the factory.
6. Protection features include:
Output Overvoltage Protection
Output Short Circuit Current Protection
The ADDC02808PB is available in a hermetically sealed,
Thermal Monitor/Shutdown
molybdenum based hybrid package and is easily heatsink
Input Overvoltage Shutdown
mountable. For MIL-STD-883 devices, contact the factory for
Input Transient Protection
availability.
7. System level features include:
Current Sharing for Parallel Operation
Logic Level Disable
Output Status Signal
Synchronization for Multiple Units
Input Referenced Auxiliary Voltage Supply
REV. 0
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: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
© Analog Devices, Inc., 1996


Analog Devices Semiconductor Electronic Components Datasheet

ADDC02808PB Datasheet

28V 200W Pulsed DC/DC Converter

No Preview Available !

ADDC02808PB–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
Temp
Test
Level Conditions
ADDC02808PB
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
+25°C
VI
VI
I
VI
VI
IO = 1.25 A to 25 A Pulsed
IO = 1.25 A to 25 A Pulsed
18 28 40
16 50
50 52.5 55
45 100
15
V
V
V
mA
mA
OUTPUT CHARACTERISTICS2, 3
Output Voltage (VO)
+25°C I
IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc
7.92 8.00 8.08 V
Line Regulation
Load Regulation
Output Ripple/Noise4
Output Current (IO)5
Output Overvoltage Protection
OOutput Current Limit
Output Short Circuit Current
BISOLATION CHARACTERISTICS
Isolation Resistance
SDYNAMIC CHARACTERISTICS4
OStep Changes In Load (min to max)
Step Changes In Load (max to min)
LSoft Start Turn-On Time
ETHERMAL CHARACTERISTICS
TEEfficiency
Full
Full
+25°C
+25°C
+25°C
Full
+25°C
+25°C
+25°C
VI
VI
VI
VI
I
VI
V
V
I
+25°C I
+25°C I
+25°C I
+25°C I
IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc
IO = 1.25 A to 20 A, VIN = 16 V to 50 V dc
IO = 25 A Pulsed, VIN = 18 V to 40 V dc
VIN = 28 V dc, IO = 1.25 A to 25 A Pulsed
IO = 25 A, 5 kHz – 2 MHz BW
VIN = 18 V to 40 V dc, Pulsed
IO = 25 A, Open Remote Sense Connection
VO = 90% VOUT Nom
45 mΩ ≤ RSHORT Circuit 60 m
Input to Output or Any Pin to Case at 500 V dc
7.84 8.16 V
7.84 8.16 V
15
mV
2.5 10
mV
40 60
mV p-p
1.25 25 A
120
130
40
% VO nom
% IO max
A
100 M
(Reference Section Entitled “Transient Response”)
(Reference Section Entitled “Response at End
of Pulse”)
IO = 25 A, From Inhibit High to Status High
6 10 ms
IO = 12.5 A
79 80
%
Full VI IO = 12.5 A
78 %
+25°C I
IO = 25 A
75 76
%
Hottest Junction Temperature5
Full
+90°C
VI
V
IO = 25 A
IO = 25 A
72.5
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)6
VIH
IIH
ISHARE (Pin 8)
TEMP (Pin 9)
Full
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
VI
I
I
I
I
I
I
I
I
I
I
V
IO = 2 A
IOH = 400 µA
IOL = 1 mA
IAUX = 5 mA, Load Current = 12.5 A
VIL = 0.5 V
VIH = 7.0 V
IO = 20 A
0.85
3.1 3.2
0.99
3.3
2.4 4.0
0.15 0.7
14.9 15.15 15.4
0.5
1.2
15
4.0
2.45 2.55
3.90
150
2.65
MHz
V
V
V
V
V
mA
V
V
µA
V
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; tests performed at low continuous load and 200 W pulsed load.
4CLOAD = 1,000 µF. Output ripple/noise measured at converter output; may be smaller at external load capacitance. Unit is stable for C LOAD ranging from 500 µF
to 4,000 µF.
5Refer to section entitled “Pulse Output Power vs. Pulse Length” for more information.
6Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).
Specifications subject to change without notice.
–2– REV. 0


Part Number ADDC02808PB
Description 28V 200W Pulsed DC/DC Converter
Maker Analog Devices
Total Page 20 Pages
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