PD-94689B AMF28XXS SERIES 28V Input, Single Output HYBRID - HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTER Description The AMF28XXS 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 ART, ARH and G-Series converters. 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 AMF28XXS Series. The physical configuration of the AMF28XXS series permits mounting directly to a heat dissipation 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 AMF28XXS 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 12 Watts Output Power Available in 3.3, 5, 7.5, 12 and 15 Volt Outputs 16 - 40 VDC Input Range (28 VDC Nominal) Low Input/Output Noise 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 High Power Density Fully Isolated - Input to Output and to Case Complimentary EMI Filter Available Synchronizable From An External Source Electrical Performance Similar to AHF28XXS Series n Standard Microcircuit Drawings Available 1 09/15/08 AMF28XXS 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=28 VDC ±5%, C L=0, unless otherwise specified. Group A Subgroups Parameter Test Conditions Input Voltage Output Power Max Unit 16 28 40 V 3.30 5.00 7.50 12.00 15.00 3.35 5.05 7.58 12.12 15.15 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 1 1 1 1 1 3.25 4.95 6.97 11.88 14.85 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 2, 3 2, 3 2, 3 2, 3 2, 3 3.20 4.90 7.35 11.76 14.70 3.40 5.10 7.65 12.24 15.30 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 0 0 0 0 0 3000 2400 1600 1000 800 AMF2803R3S All Others 1, 2, 3 1, 2, 3 2 1, 2, 3 1 V Vin = 16, 28, 40 Volts 1 mA Vin = 16, 28, and 40 Vdc Output Ripple Voltage Output Voltage Regulation Line AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Load Nom Vin = 28 Volts, 0% load Output Voltage Output Current Min All 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3 Vin = 16, 28, 40 Volts, BW = 20 Hz to 2 MHz Vin = 16, 28, 40 Volts Iout = 0%, 50%, and 100% max 10 12 W 25 60 mVPP 10 10 10 10 10 25 25 50 50 50 10 50 mV For Notes to Specifications, refer to page 5 2 www.irf.com AMF28XXS Series Static Characteristics (Continued) -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified. Group A Subgroups Parameter Input Current No Load Inhibit 1, 2, 3 1, 2, 3 Input Ripple Current 1, 2, 3 Efficiency AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 1, 3 1, 3 1, 3 1, 3 1, 3 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 2 2 2 2 2 Isolation Capacitive Load Test Conditions Nom Max Unit Vin=28V, Iout=0, Inhibit (pin 1)=open (AMF2812S and AMF2815S) (All other Models) 30 20 50 30 mA Inhibit (pin 1) shorted to input return (pin 7) (All Models) 8.0 12 Vin = 16, 28, 40 Volts, 100% load, BW = 20 Hz to 2 MHz 20 50 100% load 1 Input to output or any pin to case (except pin 6) at 500Vdc 4 4 4 4 4 No effect on dc performance Min mAPP 72 76 77 78 78 70 72 73 75 75 % 100 MΩ 3, 4 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Short Circuit Power Dissipation Short Circuit Recovery Switching Frequency 1, 2, 3 500 500 300 200 200 µF 6.0 W 20 ms 600 KHz 4 4, 5, 6 0% load to 100% Load 4, 5, 6 100% load 500 MIL-HDBK-217F SF @ Tc = 35ºC 750 MTBF Weight 550 Khr 36 g For Notes to Specifications, refer to page 5 www.irf.com 3 AMF28XXS Series Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN=28 VDC ±5%, CL=0, unless otherwise specified. Group A Parameter Subgroups Synchronization Input Frequency Range Pulse Amplitude, Hi 4 Pulse Amplitude, Lo 4 Pulse Rise time 4 Pulse Duty Cycle 4 Output Response To Step 5 Transient Load Changes Test Conditions 4, 5, 6 Ù 100% Load step 0% Ù 50% 4, 5, 6 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Recovery Time, Step Transient 5, 6 Load Changes AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Load step 50% All 4, 5, 6 Load step 0% Recovery Time Transient Step Line Changes 4, 7 Turn On Overshoot 4, 5, 6 Load step 50% Unit 20 700 10 0.8 100 80 KHz V V ns % -300 +300 -400 -500 -750 -750 -750 +400 +500 +750 +750 +750 Ù 100% Ù 50% Input step 16 ⇔ 40Vdc 100% Load Input step 16 ⇔ 40Vdc, 100% load -500 -500 -1200 -1500 -1500 Nom mVpk 70 70 100 100 100 µs 2.0 ms +500 +500 +1200 +1500 +1500 mVpk 800 µs 400 600 600 600 750 mVpk 20 ms 8 AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Turn On Delay 8 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 Max 500 2.5 -0.5 All Output Response Transient Step 4, 7 Line Changes AMF2803R3S AMF2805S AMF2807R5S AMF2812S AMF2815S Min 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 4, 5, 6 0% load to 100% load 4, 5, 6 0% load to 100% load For Notes to Specifications, refer to page 5 4 www.irf.com AMF28XXS Series Notes to Specifications 1 Parameter guaranteed by line and load regulation tests. 2 Bandwidth guaranteed by design. Tested for 20Hz to 2.0MHz. 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. Therefore this Parameters shall be guaranteed to the limit specified. 5 Load step transition time between 2.0 and 10 microseconds. 6 Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 % of VOUT at 50 percent load. 7 Input step transition time between 1.0 and 10 microseconds. Parameter guaranteed by design but not 100% tested. 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. Block Diagram 8 +Input EMI Filter +Output 3 Under-Voltage Detector 1 Enable Output Return 4 Primary Housekeeping Supply 6 Case 2 Sync Input Drive Pulse Width FB Modulator CS Error Amp & Ref 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. The open circuit voltage of the enable input is 10 +1.0 VDC. 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 10 KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communication, radar or telemetry). Interenational 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 AMF28XXS 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 1.000 1 8 0.400 0.800 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 NC 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 25 — — 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. 6 www.irf.com AMF28XXS 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 ( 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 Model 5962-04252 AMF2805S 5962-04253 AMF2812S 5962-04254 AMF2815S Part Numbering AMF 28 05 S /EM Input Voltage 28 = 28V Output Voltage 03R3 = 3.3V, 05 = 5V 07R5 = 7.5V, 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 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