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Details, datasheet, quote on part number:ADDC02828SA
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Datasheet text preview:
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FEATURES 28 V dc Input, 28 V dc @ 3.6 A, 100 W Output 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
28 V/100 W DC/DC Converter with Integral EMI Filter ADDC02828SA
FUNCTIONAL BLOCK DIAGRAM
SENSE + SENSE ADJUST STATUS RETURN VAUX INHIBIT SYNC ISHARE TEMP VIN +VIN INPUT SIDE CONTROL CIRCUIT FIXED FREQUENCY DUAL INTERLEAVED POWER TRAIN RETURN SENSEREF SENSEREF +VOUT +VOUT OUTPUT SIDE CONTROL CIRCUIT
OUTPUT FILTER
EMI FILTER
ADDC02828SA
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADDC02828SA hybrid dc/dc converter with integral EMI filter offers the highest power density of any dc/dc converter available today with its features and in its power range. The converter with integral EMI filter is a fixed frequency, 1 MHz, square wave switching dc/dc power supply. It is not a variable frequency resonant converter. In addition to many protection features, this converter has system level features that allow it to be used as a component in larger systems as well as a standalone power supply. The unit is designed for high reliability and high performance applications where saving space and/or weight is critical. The ADDC02828SA is available in three screening grades; all grades use a hermetically sealed, molybdenum based hybrid package. Contact factory for MIL-STD-883 device availability.
1. 60 W/cubic inch power density with an integral EMI filter designed to meet all applicable requirements in MIL-STD461D when installed in a typical system setup. 2. Light weight: 80 grams 3. Operational and survivable over a wide range of input conditions: 16 V50 V dc; survives low line, high line and positive and negative transients. See Input Voltage Range section. 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
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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., 1997
ADDC02828SASPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Parameter 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 OUTPUT CHARACTERISTICS2, 3 Output Voltage (VO) Case Temp Full Full +25 ° C +25 ° C +25 ° C + 2 5° C Full Full +25 ° C +25° C + 2 5° C Full +25 ° C +25°C +25°C +25 ° C
(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.)
Test Level Conditions VI VI I VI VI I VI VI VI VI I VI V V I I IO = 0.36 A to 3.6 A IO = 0.36 A to 2.9 A ADDC02828SA Min Typ Max 18 16 50 28 40 50 55 100 5 Units V V V mA mA V V V mV mV mV p-p A % VO Nom % IO max A M
52.5 85 1
Line Regulation Load Regulation Output Ripple/Noise4 Output Current (IO) Output Overvoltage Protection Output Current Limit Output Short Circuit Current ISOLATION CHARACTERISTICS Isolation Resistance DYNAMIC CHARACTERISTICS Maximum Output Voltage Deviation Due to Step Change in Load Response Time Due to Step Change in Load Soft Start Turn-On Time5 THERMAL CHARACTERISTICS Efficiency
4
IO = 0.36 A to 3.6 A, VIN = 18 V to 40 V dc IO = 0.36 A to 3.6 A, VIN = 18 V to 40 V dc IO = 0.36 A to 2.9 A, VIN = 16 V to 50 V dc IO = 3.6 A, VIN = 18 V to 40 V dc VIN = 28 V dc, IO = 0.36 A to 3.6 A IO = 3.6 A, 5 kHz 2 MHz BW VIN = 18 V to 40 V dc IO = 3.6 A, Open Remote Sense Connection VO = 90% VOUT Nom
27.44 28.00 28.56 26.88 29.12 26.88 29.12 10 60 15 45 50 100 0.36 3.6 125 130 11 100
Input to Output or Any Pin to Case at 500 V dc
+25°C +25°C +25°C +25°C Full +25°C Full +90°C Full +25°C +25°C +25°C +25°C +25°C +25°C +25°C +25°C +25°C +25°C +25°C
I I I I VI I VI V VI I I I I I I I I I I V
IO = 1.8 A to 3.6 A or 3.6 A to 1.8 A, di/dt = 0.5 A/µs IO = 1.8 A to 3.6 A or 3.6 A to 1.8 A, di/dt = 0.5 A/µs Time for VOUT to Return within 2% of Final Value IO = 3.6 A, From Inhibit High to Status High IO = 2.2 A IO = 2.2 A IO = 3.6 A IO = 3.6 A IO = 3.6 A IO = 0.36 A IOH = 400 µA IOL = 1 mA IAUX = 5 mA, Load Current = 3.6 A 81 80 81 80
1.8 150 15 85 85 110 0.85 5.5 2.4 0.99 5.7 20
V µs ms % % % % °C MHz V V V
Hottest Junction Temperature6 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) NOTES
1
5.6 4.0 0.15
0.7
12.85 13.1
13.35 V 0.5 1.2 15 V mA V V µA V V
VIL = 0.5 V
4.0 VIH = 7.0 V IO = 3.6 A 2.70 2.80 3.90 150 2.90
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 ensure 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 CLOAD = 0. 5 Output is fully loaded into a constant resistive load. 6 Refer to Thermal Characteristics section for more information. 7 Unit has internal pull-down; refer to section entitled Pin 7 (SYNC). Specifications subject to change without notice.
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ADDC02828SA
ABSOLUTE MAXIMUM RATINGS* PIN FUNCTION DESCRIPTIONS Pin No. 1
INHIBIT . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V dc, 0.5 V dc SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 V dc, 0.5 V dc ISHARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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.
Name SENSE
Function Feedback loop connection for remote sensing output voltage. Must always be connected to output return for proper operation. Feedback loop connection for remote sensing output voltage. Must always be connected to +VOUT for proper operation. Adjusts output voltage setpoint. Indicates output voltage is within ± 5% of nominal. Active high referenced to SENSE (Pin 1). Low level dc auxiliary voltage supply referenced to input return (Pin 10). Power Supply Inhibit. Active low and referenced to input return (Pin 10). Clock synchronization input for multiple units; referenced to input return (Pin 10). Current share pin that allows paralleled units to share current typically within ± 5% at full load; referenced to input return (Pin 10). Case temperature indicator and temperature shutdown override; referenced to input return (Pin 10). Input Return. +28 V Nominal Input Bus. +28 V dc Output. +28 V dc Output. Output Sense Reference. Output Sense Reference. Output Return. Output Return. PIN CONFIGURATION
2
+SENSE
3 4
ADJUST STATUS
ORDERING GUIDE Operating Temperature Range (Case)
5 6 Description 7 8
V AUX INHIBIT SYNC ISHARE
Device ADDC02828SAKV ADDC02828SATV ADDC02828SATV/883B*
*Contact factory.
40°C to +85°C Hermetic Package 55°C to +90°C Hermetic Package 55°C to +125°C Hermetic Package
9
TEMP
EXPLANATION OF TEST LEVELS Test Level
I
100% production tested. 100% production tested at +25°C, and sample tested at specified temperatures. Sample tested only. Parameter is guaranteed by design and characterization testing. Parameter is a typical value only. All devices are 100% production tested at +25°C. 100% production tested at temperature extremes for military temperature devices; guaranteed by design and characterization testing for industrial devices.
II III IV V
10 11 12 13 14 15 16 17
V IN + VIN +V OUT +V OUT S E N S E REF S E N S E REF RETURN RETURN
VI
1
17
TOP VIEW
11
12
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.
WARNING!
ESD SENSITIVE DEVICE
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ADDC02828SATypical Performance Curves
88 86 84 82
EFFICIENCY %
1.00
VO = 28V T = +25 C
18V
0.50
28VIN 75WATTS
40V
80 78 76 74 72 70 68 10 28V
VOUT DEVIATION %
0.00
0.50
20
30
40 50 60 70 OUTPUT POWER Volts
80
90
100
1.00 55 45 35 25 15 5
5
15 25 35 45 55 65
75 85
TCASE °C
Figure 1. Efficiency vs. Line and Load at +25°C
Figure 4. Output Voltage vs. Case Temperature (°C)
87 28VIN 75W PEAK 86
VOUT
EFFICIENCY %
10V
85
84
83
VINHIBIT 10V
5ms
82 55 45 35 25 15 5
5
15 25 35 45 55 65
75 85
TCASE °C
Figure 2. Efficiency vs. Case Temperature (°C) (at Nominal VIN, 75% Max Load)
Figure 5. Output Voltage Transient During Turn-On with Minimum Load Displaying Soft Start When Supply Is Enabled
14.0 13.9 13.8
INPUT VOLTAGE Volts
13.7 13.6 13.5 13.4 13.3 13.2 13.1 13.0 75 80 85 90 OUTPUT POWER Watts 95 100
500mV/Div
50µs
Figure 3. Low Line Dropout vs. Load at 90°C Case Temperature
Figure 6. Output Voltage Transient Response to a 1.8 A to 3.6 A Step Change in Load with Zero Load Capacitance
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ADDC02828SA
0 10 20 30
|A S| dB
|Z OUT|
.01 .001 0.1 1.0
40 50 60 70 80 90
100
10
100
1k FREQUENCY Hz
10k
50k
10
100
1k FREQUENCY Hz
10k
100k
Figure 7. Audio Susceptibility (Magnitude of VOUT/VIN)
Figure 9. Incremental Output Impedance (Magnitude)
10.0
28Vdc
1.0
|ZIN|
VOLTS
1mV
18Vdc 0.1
100µV
0.01 10 100 1k 10k FREQUENCY Hz 100k
2.00 MHz/Div
Figure 8. Incremental Input Impedance (Magnitude)
Figure 10. Output Voltage Ripple Spectrum
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