Details, datasheet, quote on part number: ADDC02828SA28
CategoryPower Management => DC-DC Converters => Single Output
DescriptionV/100 W DC/DC Converter With Integral Emi Filter
CompanyAnalog Devices
DatasheetDownload ADDC02828SA28 datasheet


Features, Applications

FEATURES V dc Input, 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


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 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: 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

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: Fax: 617/326-8703 Analog Devices, Inc., 1997

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 +25C Full +25C Full +25C

(TC = +25C, VIN 0.5 V dc, unless otherwise noted; full temperature range to +90C; all temperatures are case and TC is the temperature measured at the center of the package bottom.)

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

1.8 A, di/dt = 0.5 A/s 1.8 A, di/dt = 0.5 A/s Time for VOUT to Return within 2% of Final Value 3.6 A, From Inhibit High to Status High 0.36 A IOH 400 A IOL 1 mA IAUX = 5 mA, Load Current 3.6 A

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

V dc upper limit rated for transient condition to 50 ms. 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.

INHIBIT. 50 V dc, V dc SYNC. 8.0 V dc, V dc ISHARE. 6 V dc, V dc TEMP. 12 V dc, V dc Common-Mode Voltage, Input to Output. V dc Lead Soldering Temp (10 sec). +300C Storage Temperature. to +150C Maximum Junction Temperature. +150C Maximum Case Operating Temperature. +125C

*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.

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. V dc Output. V dc Output. Output Sense Reference. Output Sense Reference. Output Return. Output Return. PIN CONFIGURATION

ORDERING GUIDE Operating Temperature Range (Case)
to +85C Hermetic Package to +90C Hermetic Package to +125C Hermetic Package

100% production tested. 100% production tested at +25C, 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 +25C. 100% production tested at temperature extremes for military temperature devices; guaranteed by design and characterization testing for industrial devices.

CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high 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.


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