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Details, datasheet, quote on part number:ADDC27005
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Datasheet text preview:
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ADVANCE INFORMATION
FEATURES
270Vdc input, 5Vdc @ 20A, 100W output Integral EMI filter Low weight: 80 grams NAVMAT derated Many protection and system features
270V/100W DC/DC Converter with Integral EMI Filter
ADDC27005SA
-Sense +Sense Adju st Status
Output Side Control Circuit Fixed frequency, dual interleaved power train Output Filter
R e t u rn R e t u rn R e t u rn Vout Vout Vout
Vaux Inhibit Sync Ishare Temp -Vin +Vin
APPLICATIONS
Input Side Control Circuit
Commercial and Military Airborne Electronics Missile Electronics Space-Based Antennae and Vehicles Mobile/Portable Ground Equipment Distributed Power Architecture for Active Array Radar
EMI Filter
ADDC27005SA FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
1) 60W/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: 160-400Vdc; survives low line and high. Contact factory for availability of units with modified input voltage range. 4) High reliability; NAVMAT derated with minor exceptions. 5) Protection features include: · output overvoltage protection · output short circuit current protection · thermal monitor/shutdown · input overvoltage shutdown 6) System level features include: · current sharing for parallel operation · logic level disable · output status signal · synchronization for multiple units · input referenced auxiliary voltage supply
The ADDC27005SA hybrid military DC/DC converter with an integral EMI filter offers the highest power density of any military power converter with its features and in its power range available today. 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 which allows it to be used as a component in larger systems as well as a stand-alone power supply. The unit is designed for high reliability and high performance applications where saving space and/or weight are critical. The ADDC27005SA is available in 3 screening grades; all grades use a hermetically sealed, molybdenum based hybrid package. For MIL-STD-883 devices, contact factory for availability.
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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 Tel: 617/329-4700 TWX: 710/394-6577 West Coast Central Atlantic 714/641-9391 214/231-5094 215/643-7790
Advance Information, Dec. 97, rev. 0
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS1
Inhibit..450Vdc, -0.5Vdc Sync..........8Vdc, -0.5Vdc Ishare.......6Vdc. -0.5Vdc Temp......16Vdc, -0.3Vdc
2
Lead Soldering Temp (10 sec) ....+300°C ° Storage Temperature ...-65°C to +150°C Maximum Junction Temperature.......+150°C °
ADDC27005SA PRELIMINARY ELECTRICAL CHARACTERISTICS (Tc=25°C, Vin=270Vdc unless
otherwise noted; full temperature range is -55°C to +90°C; all temperatures are case and are measured at the center of the package bottom.)
Parameter Temp Test Level Conditions Min INPUT CHARACTERISTICS Steady State Operating Input Voltage Range Short Term Operating Input Voltage Range (per MIL-STD-704D) Input Voltage Shutdown Disabled Input Current OUTPUT CHARACTERISTICS2,3 Output Voltage (Vo) Full Full +25°C +25°C +25°C Full Full +25°C +25°C +25°C Full +25°C +25°C +25°C +25°C I I I V I I I V V I I I V I I Po=10W to 100W, Vin=200 to 350Vdc Po=10W to 100W, Vin=200 to 350Vdc Po=10W to 80W, Vin=160 to 400Vdc Po=100W, Vin=200 to 350Vdc Vin=270Vdc, Po=10W to 100W Po=100W, 5 kHz - 20 MHz BW Vo=5Vdc, Vin=200 to 350Vdc Io=tbd Vo=90%Vout nom _m
Line Regulation Load Regulation Output Ripple/Noise Output Current (Io) Output Overvoltage Protection4 Output Current Limit Output Short Circuit Current ISOLATION CHARACTERISTICS Isolation Voltage DYNAMIC CHARACTERISTICS Clock Frequency Soft Start Turn-On Time THERMAL CHARACTERISTICS Efficiency Hottest Junction Temperature5 MECHANICAL CHARACTERISTICS Weight
5 5 2 150 tbd 100 50 20 tbd
Full +25°C +25°C +25°C +90°C Full
I I I I V V
0.90 Io=20A Po=60W Po=100W Po=100W 78 77 79 78 110 80
1.00 20
MHz ms % % °C grams
NOTES
1 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. 2 Measured at the remote sense points. 3 Unit regulates output voltage to5W load. 4 Open remote sense connection. 5 Refer to Thermal Characteristics section of the data sheet for more information.
EXPLANATION OF TEST LEVELS
Test Level I - 100% Production Tested. II - 100% production tested at +25° C, and sample tested at specified temperatures. III - Sample Tested Only. IV - Parameter is guaranteed by design and characterization testing. V - Parameter is a typical value only. VI - 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.
Advance Information, Dec. 97, rev. 0
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PIN DESCRIPTIONS
Pin No. 1 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 disable. Active low and referenced to input return (pin 10). Clock synchronization input for multiple units; referenced to input return (pin 10). Current share pin which 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. +270V nominal input bus. +5Vdc output. +5Vdc output. +5Vdc output. Output return. Output return. Output return.
Basic Operation
The ADDC27005SA design is a flyback topology with dual interleaved power trains operating 180° out of phase. Each power train switches at a fixed frequency of 500 kHz, resulting in a 1 MHz fixed switching frequency as seen at the input and output of the converter. In a flyback topology, energy is stored in the inductor during one half portion of the switching cycle and is then transferred to the output filter during the next half portion. With two interleaved power trains, energy is transferred to the output filter during both halves of the switching cycle, resulting in smaller filters to meet the required ripple. A five pole differential input EMI filter, along with a commonmode EMI capacitor and careful attention to layout parasitics, is designed to meet all applicable requirements in MIL-STD-461D when installed in a typical system setup. The design uses current mode control and employs a high performance opto-isolator to maintain isolation between input and output. The converter is designed to give nearly a constant output current as the output voltage drops from Vnom to Vshckt during a short circuit condition. It does not let the current fold back below the maximum rated output current. The overvoltage protection circuitry protects the load against a break in the remote sense leads. Remote sense connections, which can be made at the load, can adjust for voltage drops of as much as 0.25Vdc between the converter and the load, thereby maintaining an accurate voltage level at the load. An internal temperature sensor shuts down the unit and prevents it from becoming too hot if the heat removal system fails. The temperature sensed is the case temperature and is factory set to trip at a nominal case temperature of 115°C. The shut down temperature setting can be raised externally or disabled by the user. Each unit has an inhibit pin which can be used to turn off the converter. This feature can be used to sequence the turn-on of multiple converters and to reduce input power draw during extended time in a no load condition. A sync pin, referenced to the input return line (pin 10), is available to synchronize multiple units to one switching frequency. This feature is particularly useful in eliminating beat frequencies, which may cause increased output ripple on paralleled units. A current share pin (Ishare) is available which permits paralleled units to share current typically within ±5% at full load. An auxiliary, low level dc bias voltage referenced to input return is provided for miscellaneous system use.
2
+ SENSE
3 4
ADJUST STATUS
5 6 7
Vaux INHIBIT SYNC
8
Ishare
9
TEMP
10 11 12 13 14 15 16 17
- Vin + Vin +Vout +Vout +Vout RETURN RETURN RETURN
Pin Configuration
1
17 To p View 12
11
Advance Information, Dec 97, rev. 0
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Screening Levels for ADDC27005S
Screening Steps Pre-cap visual Temp cycle Constant acceleration Fine leak Gross leak Burn-in Final electrical test Industrial (KV) 100% N/A N/A guaranteed to meet MIL-STD-883, TM1014 guaranteed to meet MIL-STD-883, TM1014 N/A at 25°C, per spec. table Ruggedized Industrial (TV) MIL-STD-883, TM2017 N/A N/A guaranteed to meet MIL-STD-883, TM1014 guaranteed to meet MIL-STD-883, TM1014 MIL-STD-883, TM1015, 96 hrs at 115°C case at 25°C, per spec. table MIL-STD-883B/SMD (TV/883B)
compliant to MIL-PRF-38534
All tolerances ±.005 unless otherwise specified
Nominal Case Dimensions In Inches
Top View .149 dia. typ. 0.300 Sq. +/-.010 4 plcs.
2 .1 0 0 1.800 typ
.150
.100 8 plcs 1. 500 . 20 0 . 2 00 .150 .150 4 plcs. 1.145 2 plcs. 2 .7 4 5 0.200 5 plcs. 0.250 2 plcs
0.800 4 plcs.
0. 0 40 +/ - . 00 3 0.090 +/-.010
0.390 +\-. 010
Notes 1. The final product weight is 85 grams maximum. 2. The package base material is made of molybdenum and is nominally 40 mils thick. The "runout" is less than 2 mils per inch. 3. The high current pins are 40 mil diameter, are made of 99.8% copper, and are plated with gold over nickel.
4. 5.
6.
The signal carrying pins are 18 mil diameter, are made of Kovar, and are plated with gold over nickel. All pins are a minimum length of .740 inches when the product is shipped. The pins are typically bent up or down and cut shorter for proper connection into the user's system. All pin-to-sidewall spacings are guaranteed for a minimum of 500Vdc breakdown at standard air pressure.
Advance Information, Dec 97, rev. 0
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