PD-94692E AMA28XXD SERIES 28V Input, Dual Output HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC-DC CONVERTER Description The AMA28XXD 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 AMA28XXD Series. The physical configuration of the AMA28XXD 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. International Rectifier’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 5.0 Watts Output Power Available in ± 5, ±12 and ±15 Volt Outputs 16- 40 VDC Input Range (28 VDC Nominal) Total Ionizing Dose > 25KRads (Si) 2 SEE Hardened to LET up to 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 ASA28XXD Series n Standard Microcircuit Drawings Available The AMA28XXD has been designed for high density using chip and wire hybrid technology that complies with the class H requirements of MIL-PRF-38534. Manufactured in a facility fully qualified to MIL-PRF38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Applicable generic lot qualification test data including radiation performance can be made available on request. Variations to the standard screening can be accomodated. Consult IR San Jose for special requirements. www.irf.com 1 08/17/10 AMA28XXD Series Specifications Absolute Maximum Ratings Input Voltage range Recommended Operating Conditions -0.5V to +50VDC (Continuous), Input Voltage range +16V to +40VDC 80V (100ms) Output Power Less than or equal to 5W Soldering temperature 300°C for 10 seconds Operating case temperature -55°C to +125°C Storage case temperature -65°C to +135°C Static Characteristics -55°C ≤ TCASE ≤ +125°C, VIN = 28VDC ±5%, CL= 0, unless otherwise specified. Group A Subgroups Parameter Test Conditions Input Voltage Output Voltage Output Current Output Power Vin = 28 Volts, 20% load on both outputs AMA2805D AMA2812D AMA2815D 1 1 1 AMA2805D AMA2812D AMA2815D 2, 3 2, 3 2, 3 AMA2805D AMA2812D AMA2815D 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts each output each output each output 1, 2, 3 Vin = 28 Volts, 100% load 1, 2 1, 2 1, 3 Output Ripple Voltage AMA2805D AMA2812D AMA2815D Output Voltage Regulation 1, 2, 3 1, 2, 3 1, 2, 3 3 Line AMA2805D AMA2812D AMA2815D 1, 2, 3 1, 2, 3 1, 2, 3 Load AMA2805D AMA2812D AMA2815D 1, 2, 3 1, 2, 3 1, 2, 3 Min Nom Max Unit 16 28 40 V ±4.95 ±5.00 ±5.05 ±11.88 ±12.00 ±12.12 ±14.85 ±15.00 ±15.15 ±5.10 ±12.24 ±15.30 200 83 67 800 333 267 mA 5.0 W 200 200 290 mVPP Vin = 16, 28, 40 Volts 100% load BW = 20 Hz to 2 MHz Vin = 16, 28, 40 Volts Iout = 10, 50%, 100% load V ±4.90 ±11.76 ±14.70 ±10 ±10 ±10 ±25 ±50 ±50 ±10 ±10 ±10 ±50 ±50 ±50 mV For Notes to Specifications, refer to page 4 2 www.irf.com AMA28XXD Series Static Characteristics (Continued) Group A Subgroups Parameter Cross Regulation -55°C ≤ TCASE ≤ +125°C, VIN= 28VDC ±5%, CL = 0, unless otherwise specified. 5 AMA2805D AMA2812D AMA2815D 1, 2, 3 1, 2, 3 1, 2, 3 No Load 1, 2, 3 Inhibit 1, 2, 3 Input Ripple Current AMA2805D AMA2812D AMA2815D 1, 2, 3 1, 2, 3 1, 2, 3 Input Current 3 Nom Minimum 1.0 watt on both outputs 20%-80% load Vin=28V, Iout=0, Inhibit (pin 5)=open 35 Max Unit 15 8.0 8.0 % 60 Inhibit (pin 5) shorted to input return (pin 7) 12 Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz 100 100 100 mAPP 100% load AMA2805D AMA2812D AMA2815D 1, 3 1, 3 1, 3 66 71 71 AMA2805D AMA2812D AMA2815D 2 2 2 60 68 68 % 100 MΩ Isolation Capacitive Load Min mA 3 Efficiency Test Conditions 1 5, 6 AMA2805D AMA2812D AMA2815D Short Circuit Power Dissipation 4 4 4 Input to output or any pin to case (except pin 8) at 500Vdc No effect on dc performance, total for both outputs 1, 2, 3 MTBF Weight MIL-HDBK-217F, SF @ 70ºC 500 200 200 µF 4.0 W 750 Khrs 32 g For Notes to Specifications, refer to page 4 www.irf.com 3 AMA28XXD Series Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN = 28VDC ±5%, CL = 0, unless otherwise specified. Group A Subgroups Parameter 6 Test Conditions 4, 5, 6 0% load to 100% load 4, 5, 6 100% load Output Response To Step 3, 7 Transient Load Changes 4, 5, 6 4, 5, 6 Load step 50% Load step 0% Recovery Time, Step Transient 3, 7, 8 Load Changes 4, 5, 6 4, 5, 6 Output Response Transient Step 3, 6, 9 Line Changes AMA2805D AMA2812D AMA2815D 4, 5, 6 4, 5, 6 4, 5, 6 Recovery Time Transient Step Line 3, 6, 9 Changes 4, 5, 6 Short Circuit Recovery Switching Frequency Turn On Overshoot Turn On Delay 3 3, 10 3, 10 500 Ù 100% Ù 50% Load step 50%Ù 100% Load step 0% Ù 50% Input step 16 100% load Min Ù 40Vdc, -400 -800 -550 -750 -750 Nom 550 Max Unit 25 ms 600 KHz +400 +800 mV pk 100 2000 µs +550 +750 +750 mV pk Input step 16 ⇔ 40Vdc, 100% load 1200 µs 4, 5, 6 4, 5, 6 0% load 100% load 600 400 mV pk 4, 5, 6 0% load to 100% load 25 ms Notes to Specifications 1. 2. 3. 4. 5. Applicable to positive and negative outputs. Maximum combined output is 5.0 watts. 4.0 watts (max.) is available from either output (80%). Load current split equally between +VOUT and –VOUT. 1.0 watt load on output under test, 1.0 watt to 4.0 watt load change on other output. Capacitive value 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. 6. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limit specified. 7. Load step transition time between 2 and 10 microseconds. 8. Recovery time is measured from initiation of the transient to where VOUT has returned to within ±1% of VOUT at 50% load. 9. Input step transient time between 1 and 10 microseconds. 10. 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 AMA28XXD Series Block Diagram +Output +Input 1 6 Output Return 2 -Output 3 Housekeeping Supply Error Amplifier Input Return Case 7 8 Enable CS Controller 5 Application Information Inhibit Function (Enable) Thermal Considerations 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 +1.0 VDC. Irrespective of the fact that the AMA28XXD series of converters are relatively low power devices and are designed to provide efficient voltage conversion, there will be some heat generated during normal operation. To avoid a continuous thermal rise that may eventually exceed the maximum case temperature rating and to maintain a safe operating environment for the internal components, these converters should be attached to a heat conducting surface allowing a continuous flow of the heat away from the base plate. This becomes more important when operating in the near vacuum environment of space which provides no alternate heat radiating path. EMI Filter An optional EMI filter is available (ASF461 or AFH461) will reduce the input ripple current to levels below the limits imposed by MIL-STD-461 CE03. Radiation Specification Parameter Condition Min Typ Max Unit Total Ionizing Dose MIL-STD-883, Method 1019.4 Operating bias applied during exposure 25 — — KRads (Si) Heavy Ion (Single event effects) BNL Dual Van de Graf Generator 60 — — MeV•cm2 /mg International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program. www.irf.com 5 AMA28XXD Series Mechanical 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 # 6 Designation 1 + Output 2 Output Return 3 - Output 4 Blank 5 Enable 6 + Input 7 Input Return 8 Case Ground www.irf.com AMA28XXD Series Device Screening Requirement MIL-STD-883 Method Temperature Range No Suffix d CH d -55°C to +125°C -55°C to +125°C EM -55°C to +85°C Element Evaluation MIL-PRF-38534 Class H Class H N/A Non-Destructive Bond Pull 2023 N/A N/A N/A Internal Visual 2017 Yes Yes c Temperature Cycle 1010 Cond C Cond C Cond C Constant Acceleration 2001, Y1 Axis 3000 Gs 3000 Gs 3000 Gs PIND 2020 Cond A Cond A N/A 320 hrs @ 125°C 320 hrs @ 125°C 48 hrs @ 125°C ( 2 x 160hrs ) ( 2 x 160hrs ) Burn-In 1015 Final Electrical MIL-PRF-38534 -55°C, +25°C, -55°C, +25°C, -55°C, +25°C, ( Group A ) & Specification +125°C +125°C +85°C PDA MIL-PRF-38534 2% 2% N/A Seal, Fine and Gross 1014 Cond A, C Cond A, C Cond A Radiographic 2012 Yes Yes N/A External Visual 2009 Yes Yes c Notes: Best commercial practice. Device with ‘/CH’ suffix is a DSCC class H compliant without radiation performance. No suffix is a radiation rated device but not available as a DSCC qualified SMD per MIL-PRF-38534. International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program. Standard Microcircuit Drawing Equivalence Table Standard Microcircuit IR Standard Drawing Number Part Number 5962-04250 AMA2812D 5962-04251 AMA2815D Part Numbering AMA 28 05 D /EM Model Input Voltage 28 = 28V Output Voltage 05 = ±5V 12 = ±12V 15 = ±15V Screening Level (Please refer to Screening Table) No Suffix, CH, EM Output S = Single D = Dual WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SAN JOSE: 2520Junction Avenue, San Jose, California 95134, Tel: (408) 434-5000 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 08/2010 www.irf.com 7