PD - 94687A AMA28XXS SERIES 28V Input, Single Output RADIATION TOLERANT DC/DC CONVERTERS Description The AMA28XXS series of DC/DC converter modules has been specifically designed for operation in moderate radiation environments supplementing the higher radiation performance available in the International Rectifier ART2815T converter series. Environments presented to space vehicles operating in low earth orbits, launch boosters, orbiting space stations and similar applications requiring a low power, high performance converter with moderate radiation hardness performance will be optimally served by the AMA28XXS Series. The AMA28XXS has been designed for high density using chip and wire hybrid technology that complies with the class H requirements of MIL-PRF-38534. The physical configuration of the AMA28XXS series permits mounting directly to a heat conduction surface without the necessity of signal leads penetrating the heat sink surface. This package configuration permits greater independence in mounting and more mechanical security than traditional packages. Advanced Analog’s rugged ceramic seal pins are used exclusively in the package thereby assuring long term hermeticity. AMA Features n n n n n n n n n n n 5 Watts Output Power Available in 3.3, 5, 12 and 15 Volt Outputs 16 - 40 VDC Input Range (28 VDC Nominal) Total Ionizing Dose > 25KRads (Si) 2 No SEE to LET > 60 MeV-cm /mg -55°C to +125°C Operating Range Indefinite Short Circuit Protection Flexible Mounting Fully Isolated - Input to Output and to Case Complimentary EMI Filter Available Electrical Performance Similar to ASA28XXS Series The AMA28XXS has been designed for high density using chip and wire hybrid technology that complies with the class H requirements of MIL-PRF-38534. Finished product will be fabricated in a facility fully qualified to MIL-PRF-38534. The standard processing adopted for the AMA28XXS meets the requirements of MIL-PRF-38534 for class H but with enhanced screening steps and includes element evaluation. Applicable generic lot qualification test data including radiation performance can be made available on request. Variations to the standard screening can be accommodated. Consult IR Santa Clara for special requirements. www.irf.com 1 03/02/04 AMA28XXS Series Specifications Absolute Maximum Ratings Input Voltage Range Soldering Temperature Storage Case Temperature -0.5V to +50VDC (Continuous), 80V (100ms) 300°C for 10 seconds 65°C to +135°C Recommended Operating Conditions Input Voltage Range Output Power Operating Case Temperature +16V to +40VDC Less than or equal to 5W -55°C to +125°C Static Characteristics -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified. Group A Subgroups Parameter Test Conditions Input Voltage Output Voltage AMA2803R3S AMA2805S AMA2812S AMA2815S 1 1 1 1 AMA2803R3S AMA2805S AMA2812S AMA2815S 2, 3 2, 3 2, 3 2, 3 AMA2803R3S AMA2805S AMA2812S AMA2815S 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 AMA2803R3S 1, 2, 3 All Others 1, 2, 3 Output Ripple Voltage 2 AMA2803R3S AMA2805S AMA2812S AMA2815S 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 Output Current 1 Output Power 1 Output voltage Regulation Line 1, 2, 3 Load 1, 2, 3 Iout=0 Min Nom Max Unit 16 28 40 V 3.25 4.95 11.88 14.85 3.30 5.00 12.00 15.00 3.35 5.05 12.12 15.15 V V V V 3.40 5.10 12.24 15.30 V V V V 1200 1000 417 333 mA mA mA mA 3.96 W 5.00 W 200 200 200 200 mVPP mVPP mVPP mVPP ±10 ±50 mV ±10 ±50 mV 3.20 4.90 11.76 14.70 Vin = 16, 28, 40 Volts Vin = 28 Volts, 100% load Vin = 16, 28, 40 Volts 100% Load BW = 20 Hz to 2 MHz Vin = 16, 28, 40 Volts Iout = 0, 50%, and 100% load For Notes to Specifications, refer to page 4 2 www.irf.com AMA28XXS Series Static Characteristics (Continued) -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified. Parameter Input Current No Load 1, 2, 3 Inhibit 1, 2, 3 Input Ripple Current 2 Efficiency Group A Subgroups 1, 2, 3 Test Conditions Min Vin=28V, Iout=0, Inhibit (pin 5)=open Inhibit (pin 5) shorted to input return (pin 7) Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz 100% load Nom Max Unit 20 50 mA 8 12 mA 100 mAPP AMA2803R3S AMA2805S AMA2812S AMA2815S 1, 3 1, 3 1, 3 1, 3 63 66 71 71 % % % % AMA2803R3S AMA2805S AMA2812S AMA2815S 2 2 2 2 60 66 68 68 % % % % 100 MΩ Isolation 1 Input to output or any pin to case (except pin 8) at 500Vdc Capacitive Load 3, 4 AMA2803R3S AMA2805S AMA2812S AMA2815S 4 No effect on dc performance Short Circuit Power Dissipation 1, 2, 3 MTBF Weight MIL-HDBK-217F, SF @ Tc=35°C 500 500 100 100 µF µF µF µF 4 watts 700 Khrs 32 g For Notes to Specifications, refer to page 4 www.irf.com 3 AMA28XXS Series Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified. Parameter Group A Subgroups Test Conditions Min Nom Max Unit 25 ms 600 KHz Short Circuit Recovery 4 4, 5, 6 0% load to 100% load Switching Frequency 4, 5, 6 100% load 500 Output Response To Step Transient Load Changes 8 4, 5, 6 Load step 50%ó 100% -450 +450 mVpk 4, 5, 6 Load step 0% ó 50% -750 +750 mVpk 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Load step 50%ó 100% 300 300 100 100 µs µs µs µs 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Load step 0% ó 50% 2000 2000 2000 2000 µs µs µs µs 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Input step 16 ó 40Vdc, 100% load +450 +550 +750 +750 mV pk mV pk mV pk mV pk Recovery Time Transient Step Line Changes 4, 6, 7 4, 5, 6 Input step 16 ó 40Vdc, 100% load 1200 µs Turn On Overshoot 8 4, 5, 6 0% load 600 mV pk 4, 5, 6 100% load 400 mV pk 4, 5, 6 0% load to 100% load 25 ms Recovery Time, Step Transient Load Changes 5, 6 AMA2803R3S AMA2805S AMA2812S AMA2815S AMA2803R3S AMA2805S AMA2812S AMA2815S Output Response Transient Step Line Changes 4, 7 AMA2803R3S AMA2805S AMA2812S AMA2815S Turn On Delay 8 -450 -550 -750 -750 550 Notes to Specifications 1 Parameter guaranteed by line and load regulation tests. 2 Bandwidth guaranteed by design. Tested for 20 KHz to 2 MHz. 3 Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn on. 4 Parameter shall be tested as part of design characterization and after design or process changes. Parameters shall be guaranteed to the limit specified in Electrical Specifications. 5 Load step transition time between 2 and 10 microseconds. 6 Recovery time is measured from the initiation of the transient to where V OUT has returned to within ±1 % of VOUT at 50 percent load. 7 Input step transition time between 2 and 10 microseconds. 8 Turn on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin while power is applied to the input. 4 www.irf.com AMA28XXS Series AMA28XXS Block Diagram 1 6 + O u tput + In put R e turn 2 H ousekeeping S upply E rror A m p lifier R e turn C a se 7 8 E na ble 5 CS C o n tro lle r Application Information Inhibit Function EMI Filter Connecting the enable input (Pin 5) to input common (Pin 7) will cause the converter to shut down. It is recommended that the enable pin be driven by an open collector device capable of sinking at least 400 µA of current. The open circuit voltage of the inhibit input is 10.0 +1 VDC. An optional EMI filter is available (AFH461) that will reduce the input ripple current to levels below the limits imposed by MIL-STD-461 CE03. www.irf.com 5 AMA28XXS Series Standard Process Screening for AMA28XXS Series Requirement MIL-STD-883 Method /EM Limits Flight (CH+) Limits Temperature Range -55°C to +125°C -55°C to +125°C Element Evaluation MIL-PRF-38534 Internal Visual 2017 ✼ Yes Temperature Cycle 1010 Condition C Constant Acceleration 2001 Condition A, (3000g) PIND 2020 Condition A Burn-in Interim Electrical; @160 hrs 1015 48hrs 320 hrs @ +125°C (2 x 160 hrs) MIL-PRF-38534 & Specification -55°C, +25°C, +125°C -55°C, +25°C, +125°C 2% Final Electrical (Group A) Read & Record Data PDA (25C, interim to final) Radiographic Inspection 2012 Yes Fine & Gross 1014 Condition A, C External Visual 2009 ✼ Yes ✼ Per IR Internal Standards Radiation Specification Parameter Condition Min Typ Max Unit KRads (Si) Total Ionizing Dose MIL-STD-883, Method 1019.4 25 Heavy Ion (Single event effects) BNL Dual Van de Graf Generator 60 6 Operating bias applied during exposure 2 MeV•cm /mg www.irf.com AMA28XXS Series AMA28XXS Case Outline 0.800 0.17 0.400 0.33 0.170 0.200 0.25 Typ 0.26 Typ Ø 0.140 x3 5 3 2 1 0.880 1.130 6 7 8 0.125 1.130 0.030 Dia 1.380 1.63 Tolerance unless otherwise specified: x.xx ±0.010 x.xxx ±0.005 Pin Designation Pin No. Part Numbering AMA 28 05 S / EM Designation 1 Positive Output 2 Output Return 3 N/C 4 Blank 5 Enable 6 Positive Input 7 Input Return 8 Case Ground Model Screening Blank = Flight Model (CH+) /EM = Engineering Model Outputs Input Voltage 28 = 28V Output Voltage S = Single D = Dual 03R3 = 3.3V, 05 = 5V 12 = 12V, 15 = 15V WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SANTA CLARA: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 03/04 www.irf.com 7