PD - 94585B AFC461 SERIES EMI FILTER HYBRID - HIGH RELIABILITY Description The AFC461 EMI filter will reduce the input line reflected ripple current of the AHV, ATO, ATW, ATR, and AHF line of DC/DC converters to levels below the CEO3 limits of MIL-STD-461. These EMI filters are manufactured in a facility certified to MIL-PRF-38534. All purposes used to manufacture these filters have been qualified to enable International Rectifier to deliver compliant devices. Three standard temperature grades are offered with screening options. Manufactured in a facility fully qualified to MIL-PRF38534, these EMI filters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. AFC Features n n n n n 4.0 A Input Current - max. 40 dB Noise Reduction min. @100 KHz -55C to +125C Operation Military Screening Compatible with ATW, AHE, ATO, ATR and AHF Series DC/DC Converters n No Derating for -55C to +125C Operation n No Tantalum Capacitors for High Reliability n Standard Microcircuit Drawings Available Typical Application +Vin AFC461 EMI Filter System Bus Input Return +Vout +Vin Case Case MSTR Output Return AHE28XX (or Other) DC/DC Converter Input Return +Vin Case SLV RL Output Return AHE28XX (or Other) DC/DC Converter Input Return +Vout +Vout RL Output Return To other converters up to rated output current www.irf.com 1 09/06/06 AFC461 Series Specifications Parameter Input Voltage Condition Steady State Input Current DC Ripple Input Clamping Voltage -55C +25C +125C Output Voltage 1 Min 0 38.9 42.3 44.9 Steady State Typ 28 43.2 47.0 49.9 Max 40 Unit VDC 4.0 1.0 A A RMS 47.5 51.7 54.8 VDC VDC VDC VDC VOUT = VIN - IIN (RDC) Output Current Steady State DC Resistance (RDC) Steady State Power Dissipation Max. DC Current Noise Reduction 100 KHz to 50 MHz Capacitance Any pin to case Isolation Any pin to case 500VDC 100 Operating Temperature Storage Temperature Case Case -55 -65 0.07 0.10 4.0 A 0.15 1.6 W 40 dB 4200 pF M Weight +125 +150 C C 55 g 1. Typical Applications result in Vout within 2 % of Vin Standard Microcircuit Drawing Equivalence Table Standard Microcircuit Drawing Number 91020-01HXA 91020-01HZA 2 Vendor Cage Code 52467 52467 IR Standard Part Number AFC461/CH AFC461F/CH www.irf.com AFC461 Series Block Diagram +Input 10H 5H +Output 1 2 0.2 0.2 1800 pFd Case 1N5649A 3 0.1F 11F Input Return 5 11F 1800 pFd Output Return 4 Refer to page 4 for Pin Designation Table Device Synchronization Whenever multiple DC/DC converters are utilized in a single system, significant low frequency noise may be generated due to slight difference in the switching frequencies 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 (communications, radar or telemetry). International Rectifier offers an option, which provides synchronization of multiple AHE/ATW type converters, thus eliminating this type of noise. To take advantage of this capability, the system designer must assign one of the converters as the master. Then, by definition, the remaining converters become slaves and will operate at the masters' switching frequency. The user should be aware that the synchronization system is fail-safe; that is, the slaves www.irf.com will continue operating should the master frequency be interrupted for any reason. The layout must be such that the synchronization output of the master device is connected to the synchronization input of each slave device. It is advisable to keep this run short to minimize the possibility of radiating the 250KHz switching frequency. A typical connection is illustrated on the cover sheet of this document. The appropriate converters must be ordered to take advantage of this feature. After selecting the converters required for the system, a `MSTR' suffix is added for the master converter part number and an `SLV' suffix is added for slave part number. See Part Number section of the applicable converter data sheets. 3 AFC461 Series Mechanical Outlines Non-Flanged 0.040 D (1.02) X 0.26 L (6.60) Pins 0.800 (20.32) 2 2.120 Max (53.85) 3 4 1.600 (40.64) 1 1.120 Max (28.45) 5 0.380 Max (9.65) Flanged 0.050 (1.27) 0.800 (20.32) 0.040 D (1.02) X 0.26 L (6.60) Pins 2 2.870 (72.90) Max 2.550 (64.77) 2.110 (53.59) Max 4 1.600 (40.64) 1 5 O 0.162 (4.12) 2 Holes 0.380 (9.65) Max 1.110 (28.19) 3 Pin Designation 4 Pin # Designation 1 + Input 2 + Output 3 Case Ground 4 Output Return 5 Input Return www.irf.com AFC461 Series Device Screening Requirement MIL-STD-883 Method Temperature Range Element Evaluation No Suffix ES -20C to +85C -55C to +125C MIL-PRF-38534 Non-Destructive Bond Pull Internal Visual d HB CH -55C to +125C -55C to +125C N/A N/A Class H 2023 N/A N/A N/A N/A 2017 c Yes Yes Yes Temperature Cycle 1010 N/A Cond B Cond C Cond C Constant Acceleration 2001, Y1 Axis N/A 500 Gs 3000 Gs 3000 Gs PIND 2020 N/A N/A N/A N/A 48 hrs@hi temp Burn-In 1015 N/A Final Electrical MIL-PRF-38534 25C 25C d 160 hrs@125C 160 hrs@125C -55C, +25C, -55C, +25C, +125C +125C ( Group A ) & Specification PDA MIL-PRF-38534 N/A N/A N/A 10% Seal, Fine and Gross 1014 Cond A Cond A, C Cond A, C Cond A, C Radiographic 2012 N/A External Visual 2009 c N/A N/A N/A Yes Yes Yes Notes: Best commercial practice Sample tests at low and high temperatures Part Numbering AFC 461 F /CH Model Screening Level Applicable Military Test Standard No Suffix, ES, HB, CH (Please refer to Screening Table) Case Style F = Flange Blank = Non-Flanged 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. 09/2006 www.irf.com 5