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Details, datasheet, quote on part number:ADDC02808PBKV
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Datasheet text preview:
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FEATURES 28 V dc Input, 8 V dc @ 25 A, 200 W Pulse Output Integral EMI Filter Ultrafast Transient Response Minimal Output Voltage Deviation Low Weight: 80 Grams NAVMAT Derated Many Protection and System Features
28 V, 200 W Pulsed DC/DC Converter with Integral EMI Filter ADDC02808PB
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
ADDC02808PB
APPLICATIONS Distributed Power Architecture for Driving T/R Modules Motor and Actuator Drivers
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADDC02808PB hybrid military dc/dc converter is compensated specifically for pulse applications where fast transient response and minimum output voltage deviation are required. It is also designed to deliver very high, pulsed output power. The unit is designed for high reliability and high performance applications where saving space and/or weight are critical. The ADDC02808PB has been characterized over a wide variety of load conditions. Its transient response has been set to insure output stability over a broad range of load capacitance. For 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. The ADDC02808PB is available in a hermetically sealed, molybdenum based hybrid package and is easily heatsink mountable. Three screening levels are available, including military SMD.
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: 85 grams 4. Operational and survivable over a wide range of input conditions: 16 V50 V dc; survives low line, high line 5. High reliability; NAVMAT derated 6. Protection features include: Output Overvoltage Protection Output Short Circuit Current Protection Thermal Monitor/Shutdown Input Overvoltage Shutdown Input Transient Protection 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
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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. O ne 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
ADDC02808PBSPECIFICATIONS
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 CHARACTERISTICS2, 3 Output Voltage (VO) Case Temp Full Full + 2 5 °C + 2 5 °C + 2 5 °C + 2 5 °C Full Full + 2 5 °C + 2 5 °C + 2 5 °C Full + 2 5 °C +25°C +25°C + 2 5 °C +25°C +25°C +25°C Min Max +25°C Min Max +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
(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 T C 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 I IO = 1.25 A to 25 A Pulsed IO = 1.25 A to 25 A Pulsed ADDC02808PB Min Typ Max 18 16 50 28 40 50 55 90 2 8.08 8.16 8.16 5 10 30 25 Units V V V mA mA V V V mV mV mV p-p A % VO nom % IO max A M
52.5 45 1 8.00
Line Regulation Load Regulation Output Ripple/Noise4 Output Current (IO)5 Output Overvoltage Protection Output Current Limit Output Short Circuit Current ISOLATION CHARACTERISTICS Isolation Resistance DYNAMIC CHARACTERISTICS4 Step Changes In Load (min to max) Step Changes In Load (max to min) Soft Start Turn-On Time THERMAL CHARACTERISTICS Efficiency
IO = 1.25 A to 25 A, VIN = 18 V to 40 V dc 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, I O = 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
7.92 7.84 7.84
1 2.5 10 1.25 125 130
40 Input to Output or Any Pin to Case at 500 V dc (Reference Section Entitled "Transient Response") (Reference Section Entitled "Response at End of Pulse") IO = 25 A, From Inhibit High to Status High IO = 12.5 A IO = 12.5 A IO = 12.5 A IO = 25 A IO = 25 A IO = 25 A IO = 25 A IO = 2 A IOH = 400 µA IOL = 1 mA IAUX = 5 mA, Load Current = 12.5 A 77.5 77.5 76 73.5 73.5 71 100
I I VI VI I VI VI V VI I I I I I I I I I I V
6
10
ms
80 76
Hottest Junction Temperature5 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)
110 0.85 3.1 2.4 0.99 3.3
% % % % % °C MHz V V V V V mA V V µA V V
3.2 4.0 0.15
0.7 15.65 0.5 1.2 15
14.65 15.15
VIL = 0.5 V
4.0 VIH = 7.0 V IO = 20 A 2.45 2.55 3.90 175 2.65
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; tests performed at low continuous load and 200 W pulsed load. 4 CLOAD = 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. 5 Refer to section entitled "Pulse Output Power vs. Pulse Length" for more information. 6 Unit has internal pull-down; refer to section entitled Pin 7 (SYNC). Specifications subject to change without notice.
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ADDC02808PB
ABSOLUTE MAXIMUM RATINGS* PIN FUNCTION 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 GUIDE
5 6 Description 7 8
Device
Operating Temperature Range (Case)
ADDC02808PBKV 40°C to +85°C Hermetic Package ADDC02808PBTV 55°C to +90°C Hermetic Package 5962-9763401HXC 55°C to +125°C Hermetic Package (ADDC02808PBTV/QMLH) EXPLANATION OF TEST LEVELS Test Level
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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
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). V AUX 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). I SHARE 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). V IN Input Return. + V IN +28 V Nominal Input Bus. +V OUT +8 V dc Output. +V OUT +8 V dc Output. +V OUT +8 V dc Output. 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
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3
ADDC02808PBTypical Performance Curves
82 80 40V VOUT DEVIATION % 78 PERCENTAGE 28V 0.5 1.0 28VIN, 150W PEAK
76 74 72
0.0
18V
0.5
70 68 1.0 55 45 35 25 15 5
0
20
40
60 80 100 120 140 OUTPUT POWER Watts
160
180
200
5
15 25 35 45 55 65 75 85 95 TCASE
Figure 1. Efficiency vs. Line and Load at +25 °C (Load Pulsewidth of 50 ms)
Figure 4. Output Voltage vs. Case Temperature (°C)
79 28VIN, 150W PEAK 79 EFFICIENCY Percentage
100
78
2V
90
VO
78
77 10V 77
10 0%
VINHIBIT
1ms
76 55 45 35 25 15 5
5
15 25 35 45 55 65 75 85 95 TCASE
Figure 2. Efficiency vs. Case Temperature (°C) (at Nominal VIN, 75% Max Load, Load Pulsewidth of 50 ms)
16.0
Figure 5. Output Voltage Transient During Turn-On with 0.1 A Load Displaying Soft Start When Supply Is Enabled
15.5
100 90
INPUT VOLTAGE
15.0
100mV
14.5
VO
14.0
10 0%
13.5
100 s
13.0 140
150
160 170 180 PEAK OUTPUT POWER Watts
190
200
Figure 3. Low Line Dropout vs. Load at 90°C Case Temperature (Load Pulsewidth of 50 ms)
Figure 6. Output Voltage Transient Response to a 1 A to 25 A Step Change in Load, di/dt = 12 A/µs, with 1,000 µF Load Capacitance (RESR = 10 m)
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ADDC02808PB
0 10 20 30 |AS| dB 40 50 60 70 80 90 100 10 100 1k FREQUENCY Hz 10k 50k 0.001 10 100 1k FREQUENCY Hz 10k 100k |ZOUT| 0.01 .1 0 VOLTS 1
Figure 7. Audio Susceptibility (Magnitude of VOUT / VIN)
Figure 9. Incremental Output Impedance (Magnitude)
1k
5mV
00
1mV
|ZIN|
1
10
0.5mV
1
100 V
0.1 10
100
1k FREQUENCY Hz
10k
100k
50 V
0
10 FREQUENCY MHz
20
Figure 8. Incremental Input Impedance (Magnitude)
Figure 10. Output Frequency Spectrum
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