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| PD - 94586A AFV461 SERIES ADVANCED ANALOG EMI FILTER Description The AFV461 EMI filter will reduce the input line reflected ripple current of all DC/DC converter families to levels below the CEO3 limits of MIL- STD-461. This filter is intended for applications requiring compatibility to MIL-STD-704A. These EMI filters are manufactured in a facility certified to MIL-PRF-38534 and are available with military screening. Four grades are offered with different screening options. Refer to Part Number section. AFV Features 4.0 amp Input Current - max. 40 dB Noise Reduction min. @100 KHz -55C to +125C Operation Military Screening Compatible with all stanard 28 Volts Input DC/DC Converters n No Derating for -55C to +125C Operation n No Tantalum Capacitors for High Reliability n n n n n Typical Application +Vin +Vout +Vin Case System Bus Input Return AFV461 EMI Filter Case AHV28XX (or Other) DC/DC Converter +Vout RL Output Return Input Return Output Return +Vin Case AHV28XX (or Other) DC/DC Converter +Vout RL Input Return Output Return To other converters up to rated output current www.irf.com 1 11/21/02 AFV461 Series Specifications Parameter Input Voltage Input Current 1 Condition Steady State DC Ripple Steady State Steady State Steady State Max. DC Current 100 KHz to 50 MHz Any pin to case Any pin to case 500VDC Case Min 0 Typ 28 Max 40 80 4.0 1.0 Unit VDC Amps Amps RMS VDC Output Voltage Output Current VOUT = V IN - IIN (RDC) 4.0 0.07 0.10 0.15 1.6 40 4200 100 -55 -65 +125 +150 39 Amps Ohms Watts dB pF M C C grams DC Resistance (RDC) Power Dissipation Noise Reduction Capacitance Isolation Operating Temperature Storage Temperature Weight 1. Typical Applications result in Vout within 2 % of Vin Available Screening Levels and Process Variations for AFV461 Series MIL-STD-883 Method No Suffix -20 to +85C ES Suffix -55C to +125C HB Suffix -55C to +125C CH Suffix -55C to +125C MIL-PRF-38534 2017 1010 2001 1015 MIL-PRF-38534 48hrs @ 85 C 25C Yes Cond B 500g 96hrs 48hrs @ 125C 25C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C Yes Cond C Cond A 160hrs @ 125C -55, +25, +125C Cond A, C Yes Requirement Temperature Range Element Evaluation Internal Visual Temperature Cycle Constant Acceleration Burn-in Final Electrical (Group A) Seal, Fine & Gross External Visual 1014 2009 Cond A, C Yes Cond A, C Yes * Per Commercial Standards 2 www.irf.com AFV461 Series AFV461 Block Diagram 10H 1 1800 pFd 3 11F 11F 1800 pFd 5 4 5H 2 0.2 0.2 Refer to last page for Pin Designation 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). Advanced Analog 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 will be 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. www.irf.com 3 AFV461 Series AFV461 Case Outlines Non-Flanged 0.040 D (1.02) X 0.26 L (6.60) P ins 0.800 (20.32) Flanged 0.050 (1 .27) 0.040 D (1 .02 ) X 0.26 L (6 .60 ) Pin s 0.800 (2 0.32 ) 2 3 4 2 3 4 2.120 M ax (53.85) 1.600 (40.64) 2.870 (7 2.90 ) M ax 2.550 (6 4.77 ) 2.110 (5 3.59 ) M ax 1.600 (4 0.64 ) 1 5 1 5 1.120 M ax (28.45) 0.380 M ax (9.65) 1.110 (2 8.19 ) 0.380 (9 .65) M ax O 0 .16 2 (4 .12) 2 H oles Pin Designation Pin No. 1 2 3 4 5 Designation + Vin + Vout Case Output Return Input Return Part Numbering AFV 461 F / CH M o del Applica ble M ilita ry Test Standard Screening -- , ES, HB, C H C a se Style O m it fo r S ta n d a rd Available Standard Miliatary Drawing (SMD) Cross Reference Standard Military Drawing PIN 91020-02HXA 91020-02HZA Vendor CAGE Code 52467 52467 Vendor Similar PIN AFV461/CH AFV461F/CH WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331 ADVANCED ANALOG: 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. 11/02 4 www.irf.com |
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