PD-94688C AMF28XXD SERIES 28V Input, Dual Output HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTER Description The AMF28XXD 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 AMF28XXD series. The physical configuration of the AMF28XXD 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. The AMF28XXD 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-PRF-38534, 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. Consult IR Santa Clara for special requirements. www.irf.com AMF Features n n n n n n n n n n n n n n 12W Output Power Available in ±5V, ±12V and ±15V Outputs 16 - 40VDC Input Range (28VDC Nominal) Low Input/Output Noise Total Ionizing Dose > 25KRads (Si) 2 SEE Hardened to LET up to 60MeV.cm /mg -55°C to +125°C Operating Range Indefinite Short Circuit Protection Flexible Mounting High Power Density Fully Isolated - Input to Output and to Case Complimentary EMI Filter Available Externally Synchronizable Electrical Performance Similar to AHF28XXD Series n Standard Microcircuit Drawings Available 1 09/15/08 AMF28XXD Series Specifications Absolute Maximum Ratings Recommended Operating Conditions Input Voltage range -0.5V to +50VDC Input Voltage range +16V to +40VDC Soldering temperature 300°C for 10 seconds Output Power Less than or equal to 12W Storage case temperature -65°C to +135°C Operating case temperature -55°C to +125°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 AMF2805D AMF2812D AMF2815D 1 1 1 AMF2805D AMF2812D AMF2815D 2, 3 2, 3 2, 3 AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 1, 2 1, 2 Vin = 28 Volts, 10% load on both outputs Vin = 16, 28, 40 Volts each output each output each output 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 V ±4.90 ±11.76 ±14.70 ±5.10 ±12.24 ±15.30 240 100 80 2160 900 720 mA 12 12 12 W 25 25 25 60 60 60 mVPP ±10 ±10 ±10 ±25 ±50 ±50 ±10 ±10 ±10 ±50 ±50 ±50 Vin = 28 Volts, 100% load 1, 3 Output Ripple Voltage AMF2805D AMF2812D AMF2815D Output voltage Regulation 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz 3 Line AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 Load AMF2805D AMF2805D AMF2805D 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts Iout = 10, 50%, and 100% load mV For Notes to Specifications, refer to page 5 2 www.irf.com AMF28XXD Series Static Characteristics (Continued) Parameter Cross Regulation -55°C ≤ TCASE ≤ +125°C, VIN=28VDC ±5%, CL=0, unless otherwise specified. Group A Subgroups 5 Input Current No Load Inhibit AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 AMF2805D AMF2812D AMF2815D 1, 2, 3 1, 2, 3 1, 2, 3 3 Input Ripple Current AMF2805D AMF2812D AMF2815D Efficiency 1, 2, 3 1, 2, 3 1, 2, 3 3 Min Vin=28V, Iout=0, Inhibit (pin 1)=open Inhibit (pin 1) shorted to input return (pin 7) Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz 100% load AMF2805D AMF2812D AMF2815D 1, 3 1, 3 1, 3 76 77 78 AMF2805D AMF2812D AMF2815D 2 2 2 72 74 74 Isolation Capacitive Load Test Conditions 5, 6 1 Input to output or any pin to case (except pin 6) at 500Vdc 4 No effect on dc performance, total for both outputs AMF2805D AMF2812D AMF2815D Short Circuit Power Dissipation Weight MIL-HDBK-217F, SF @ Tc=35°C Max Unit 10 3.0 3.0 % 35 35 35 60 60 60 8.0 8.0 8.0 12 12 12 20 20 20 50 50 50 mA mAPP % 100 1, 2, 3 MTBF Nom Minimum 1.0 watt on both outputs 10%-90% load MΩ 500 200 200 µF 6.0 W 750 Khrs 36 g For Notes to Specifications, refer to page 5 www.irf.com 3 AMF28XXD Series Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN=28VDC ±5%, CL=0, unless otherwise specified. Group A Subgroups Parameter Short Circuit Recovery 6 AMF2805D AMF2812D AMF2815D Switching Frequency 3 Synchronization Input 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Nom Max Unit 25 25 25 ms 600 KHz 20 700 10 0.8 100 80 KHz V V ns % -200 +200 mVpk --800 +800 0% load to 100% Load 100% load 500 4, 5, 6 Output Response To Step Transient Load Changes 3, 7 4, 5, 6 4, 5, 6 Recovery Time, Step Transient Load 3, 7, 8 Changes 4, 5, 6 4, 5, 6 Output Response Transient Step Line 3, 6, 9 Changes AMF2805D AMF2812D AMF2815D 4, 5, 6 4, 5, 6 4, 5, 6 Recovery Time Transient Step Line 3, 6, 9 Changes 4, 5, 6 Turn On Delay Min 550 3 Frequency Range Pulse Amplitude, Hi 6 Pulse Amplitude, Lo 6 Pulse Rise time 6 Pulse Duty Cycle 6 Turn On Overshoot Test Conditions 500 2.5 -0.5 Ù100% Load step 10% Ù 50% Load step 50% Ù100% Load step 10% Ù50% Input step 16Ù to 40Vdc, Load step 50% 70 µs 2000 100% Load -450 -750 -750 Input step 16 100% load +450 +750 +750 mVpk 1200 µs Ù 40Vdc, 3, 10 All 4, 5, 6 0% load 600 AMF2805D AMF2812D AMF2815D 4, 5, 6 4, 5, 6 4, 5, 6 100% load 400 300 300 mVpk 4, 5, 6 0% load to 100% load 25 ms 3, 10 For Notes to Specifications, refer to page 5 4 www.irf.com AMF28XXD Series Notes to Specifications 1. 2. 3. 4. 5. Applicable to positive and negative outputs. Maximum combined output is 12W. 10.8W (max.) is available from either output (90%). Load current split equally between +VOUT and –VOUT. 1.2W load on output under test, 1.2W to 10.8W 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 2.0µs and 10µs. 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 1.0µs and 10µs. 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. Block Diagram 8 +Input 3 EMI Filter +Output 4 1 Enable Primary Housekeeping Supply Output Return 5 - Output 6 Case 2 Sync Input Drive Pulse Width FB Modulator Error Amp & Ref CS Input Return 7 Application Information Inhibit Function (Enable) Device Synchronization Connecting the enable input (Pin 1) 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. If the user chooses not to use the inhibit function, it may be left open and the converter will function normally. Because it is internally pulled up, the open circuit voltage of the inhibit input is 10 +1.0VDC. When multiple DC/DC converters are utilized in a single system, significant low frequency noise may be generated due to a small difference in the switching frequency of the converters (beat frequency noise). Because of the low frequency nature of this noise (typically less than 10KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). International Rectifier provides synchronization of multiple AMF type converters to match switching frequency of the converter to the frequency of the system clock, thus eliminating this type of noise. EMI Filter 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 AMF28XXD Series Mechanical Outline 1.130 Ø 0.140 0.17 5 3 4 6 7 0.03D x 0.25L 8 Pins 2.10 2 1.850 1.600 0.600 0.800 1 8 0.400 1.000 0.19 0.33 1.380 Tolerance unless otherwise specified: x.xx ±0.010 x.xxx ±0.005 Pin Designation Pin # Designation 1 Enable 2 Sync Input 3 + Output 4 Output Return 5 - Output 6 Case Ground 7 Input Return 8 + Input Radiation Specification Parameter Condition Min Typ Max Unit KRads (Si) Total Ionizing Dose MIL-STD-883, Method 1019.4 Operating bias applied during exposure 30 — — Heavy Ion (Single event effects) BNL Dual Van de Graf Generator 60 — — 2 MeV •cm /mg International Rectifier currently does not have a DSCC certified Radiation Hardness Assurance Program. 6 www.irf.com AMF28XXD Series Device Screening Requirement MIL-STD-883 Method Temperature Range No Suffix d CH d EM -55°C to +125°C -55°C to +125°C -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 Burn-In 1015 ( 2 x 160hrs ) ( 2 x 160hrs ) 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 5962-05222 5962-05223 AMF2812D AMF2815D Part Numbering AMF 28 05 D /EM Model Screening Level Input Voltage No Suffix, CH, EM (Please refer to Screening Table) 28 = 28V Output Output Voltage S = Single D = Dual 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. 09/2008 www.irf.com 7