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AME270461X-ES Datasheet(PDF) 3 Page - International Rectifier |
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AME270461X-ES Datasheet(HTML) 3 Page - International Rectifier |
3 / 5 page www.irf.com 3 AME50461 Series AME50461 Block Diagram Refer to last page for Pin Designation Circuit Operation and Application Information The AME series of filters employ three stages of fil- tering in a low pass configuration designed to at- tenuate the higher frequency components of ripple currents generated by high frequency switching DC/ DC converters. The Block Diagram describes the general arrangement of the principal elements which have been connected to provide both differential and normal mode buffering between the input and out- put terminals. 1 To calculate the input current ( iin) requirement of any one converter, first determine the maximum output power by multiplying output voltage by maximum load current, divide this power by the efficiency to obtain input power and then divide input power by input voltage to obtain the input current ( iin). Note that to obtain worst case input current, you must use maximum load current, minimum efficiency and minimum line voltage in this calculation. 7 12 1 6 20 nF 20 nF Case Output Output Return Input Input Return 2 3 5 4 11 10 8 9 Employing only passive elements, AME filter opera- tion is initiated simply by insertion into the input power path between one or more DC/DC converters and their input DC voltage bus. In this connection, out- put pins of the filter will be connected to input pins of the converters. When a single AME filter is used in conjunction with multiple DC/DC converters, the use will be limited to the maximum output current capability specified in the AME electrical table.1 A typical connection utilizing one filter to drive two converters is illus- trated on page1. Although expressly designed to complement the AFL series of DC/DC converters, the AME50461 filters can be successfully operated in conjunction with other converters in the Advanced Analog line in- cluding the ASA, AHF, AHV and ATR series. |
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