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Details, datasheet, quote on part number:ADDC02805
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Datasheet text preview:
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FEATURES 28 V dc Input, 5 V dc @ 20 A, 100 W Output (ADDC02805SA) 2 8 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
28 V/66 W/100 W DC/DC Converters with Integral EMI Filter ADDC02803SC/ADDC02805SA
FUNCTIONAL BLOCK DIAGRAM
SENSE + SENSE ADJUST STATUS RETURN VAUX INHIBIT SYNC ISHARE TEMP VIN +VIN EMI FILTER INPUT SIDE CONTROL CIRCUIT FIXED FREQUENCY DUAL INTERLEAVED POWER TRAIN RETURN OUTPUT FILTER RETURN +VOUT +VOUT +VOUT OUTPUT SIDE CONTROL CIRCUIT
ADDC02803SC ADDC02805SA
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
PRODUCT HIGHLIGHTS
The ADDC02803SC and ADDC02805SA hybrid dc/dc converters 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.
1. Up to 60 W/cubic inch power density with an integral EMI filter designed to meet all applicable requirements in MILSTD-461D 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 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
ADDC02803SC/ADDC02805SASPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Parameter INPUT CHARACTERISTICS Steady State Operating Input Voltage Range 1 Abnormal Operating Input Voltage Range (Per MIL-STD-704D)1 Input Overvoltage Shutdown No Load Input Current Disabled Input Current OUTPUT CHARACTERISTICS 2, 3 Output Voltage (VO) Case Temp Full Full +25°C +25°C Full +25°C Full Full +25°C +25°C +25°C Full +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 I VI I VI VI V V I VI V V I IO = 2 A to 20 A IO = 2 A to 16 A ADDC02803SC ADDC02805SA Min Typ Max Min Typ Max 18 16 50 28 40 18 16 50 28 40 50 55 90 2.0 Units V V V mA mA
50 52.5 55 90 0.85 2.0 3.34 3.4 3.4
52.5 0.85
Line Regulation Load Regulation Output Ripple/Noise4 Output Current (IO) Output Overvoltage Protection Output Current Limit Output Short Circuit Current ISOLATION CHARACTERISTICS Isolation Resistance
4
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
3.26 3.30 3.2 3.2 1 1 15 2 145
35 21.2
5.00 5.025 4.925 4.925 1 1 15 2 125 130
39 Input to Output or Any Pin to Case at 500 V dc 100 100
5.05 V 5.125 V 5.125 V mV mV 50 mV p-p 20 A % VO Nom % IO max 35 A M
+25°C I
DYNAMIC CHARACTERISTICS Output Voltage Deviation Due to Step Change in Load +25°C V Response Time Due to Step Change in Load +25°C V Soft Start Turn-On Time 5 THERMAL CHARACTERISTICS Efficiency +25°C I +25°C Max Min +25°C Max Min +90°C I VI VI I VI VI V
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 IO = 12 A IO = 12 A IO = 12 A IO = 20 A IO = 20 A IO = 20 A IO = 20 A IO = 2 A IOH = 400 µA IOL = 1 mA IAUX = 5 mA, Load Current = 20 A 75 75 72 74 74 73
350 135 1 79 4 77 77 75 77 77 75
500 125 7 80 20
mV µs ms % % % % % % °C 0.99 2.10 MHz V V V V V mA V V µA V V
77
79
Hottest Junction Temperature 6 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)
110 0.85 0.99 1.26 1.32 1.38 2.4 4.0 0.15 0.7 0.85 1.92 2.4
110
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
2.04 4.0 0.15 14.7
0.7 15.3 0.5 1.2 15
13.2 13.7 14.2 0.5 1.2 15 4.0
14.3
VIL = 0.5 V
4.0 2.75 2.82 3.90 175 2.95
VIH = 7.0 V IO = 20 A
175 2.62 2.72 2.82 3.90
NOTES
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 CLOAD = 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.
1
2
REV. A
ADDC02803SC/ADDC02805SA
ABSOLUTE MAXIMUM RATINGS* PIN DESCRIPTIONS
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.
Pin No. Name 1 SENSE
Function
2
3 4
ORDERING INFORMATION
5 6
Device
Operating Temperature Range (Case)
Description
7 8
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
9
10 11 12 13 14 15 16 17
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
Feedback loop connection for remote sensing output voltage. Must always be connected to output return for proper operation. +SENSE Feedback loop connection for remote sensing output voltage. Must always be connected to +VOUT for proper operation. ADJUST Adjusts output voltage setpoint. STATUS Indicates output voltage is within ± 5% of nominal. Active high referenced to SENSE (Pin 1). VAUX Low level dc auxiliary voltage supply referenced to input return (Pin 10). INHIBIT Power Supply Inhibit. Active low and referenced to input return (Pin 10). SYNC Clock synchronization input for multiple units; referenced to input return (Pin 10). ISHARE Current share pin which allows paralleled units to share current typically within ± 5% at full load; referenced to input return (Pin 10). TEMP Case temperature indicator and temperature shutdown override; referenced to input return (Pin 10). VIN Input Return. + VI N +28 V Nominal Input Bus. + VO U T +5 V dc Output (ADDC02805SA). +3.3 V dc Output (ADDC02803SC). + VO U T +5 V dc Output (ADDC02805SA). +3.3 V dc Output (ADDC02803SC). + VO U T +5 V dc Output (ADDC02805SA). +3.3 V dc Output (ADDC02803SC). RETURN Output Return. RETURN Output Return. RETURN Output Return.
PIN CONFIGURATION
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
REV. A
3
64 5
10
15
20
25 30 35 40 45 50 55 OUTPUT POWER WATTS
60
65
70
ADDC02803SC/ADDC02805SATypical Performance Curves
82 28V 80 78
EFFICIENCY %
16.0
15.5
40V 76
INPUT VOLTAGE V
18V
15.0 ADDC02803SC 14.5 ADDC02805SA 14.0
74 72 VIN = 28V VO = 5V TC = +25 C
70 68 10
13.5
20
30
40 50 60 70 OUTPUT POWER Watts
80
90
100
13.0 30
35
40 45 50 55 60 65 70 MAXIMUM POWER OUTPUT Watts
80
90
100
Figure 1. Efficiency vs. Line and Load at +25°C (ADDC02805SA)
Figure 4. Low Line Dropout vs. Load at +90°C Case Temperature
80 78 76 40V 74 72 70 68 66 64 5 10 15 20 25 30 35 40 45 50 OUTPUT POWER Watts 55 60 65 70
5.100
18V
28V
5.050
VOUT
5.000
4.950
4.900 55
35
15
5
25 45 TCASE
65
85
105
125
Figure 2. Efficiency vs. Line and Load at +25°C (ADDC02803SC)
Figure 5. Output Voltage vs. Case Temperature (°C) (ADDC02805SA)
81 ADDC02805SA 80
3.340
3.320
EFFICIENCY %
79 ADDC02803SC 78 VOUT 35 15 5 25 TCASE C 45 65 85
3.300
77
3.280
76
75 55
3.260 55 45 35 25 15 5
5
15 25 35 45 55 65 75 85 95 TCASE
Figure 3. Efficiency vs. Case Temperature (°C) (at Nominal VIN, 75% Max Load)
Figure 6. Output Voltage vs. Case Temperature (°C) (ADDC02803SC)
4
REV. A
ADDC02803SC/ADDC02805SA
50mV
50mV
100 90
100 90
1V
VO
VO
10 0%
10
10A
VINHIBIT
0%
10V
2ms
IO
50 s
Figure 7. Output Voltage Transient During Turn-On with Minimum Load Displaying Soft Start When Supply Is Enabled (ADDC02805SA)
Figure 10. Output Voltage Transient Response to a 10 A to 20 A Step Change in Load with Zero Load Capacitance (ADDC02803SC)
0 10 20 30
1V
VO
|AS| dB
100 90
40 50 60 70
5V
10 0%
80
VINHIBIT
0.2ms
90 100 10 100 1k FREQUENCY Hz 10k 50k
Figure 8. Output Voltage Transient During Turn-On with Minimum Load Displaying Soft Start When Supply Is Enabled (ADDC02803SC)
Figure 11. Audio Susceptibility (Magnitude of VOUT/VIN) (ADDC02805SA)
0 10 20 30
100mV
100 90
40 AS dB
VO
50 60 70 80
IO
10
10A
0%
50 s
90 100 10 100 1k FREQUENCY Hz 10k 50k
Figure 9. Output Voltage Transient Response to a 10 A to 20 A Step Change in Load with Zero Load Capacitance (ADDC02805SA)
Figure 12. Audio Susceptibility (Magnitude of VOUT/VIN) (ADDC02803SC)
REV. A
5
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