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Экологический статус

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  Ultralow-EMI, 96W, Step-Down uModule Regulator- EN55022 Class B Certified in a 15mm x 15mm Footprint &mdash LT Journal
  PDF, 2.1 Мб, Файл опубликован: 20 янв 2012
  Выписка из документа

  Ultralow-EMI, 96W, Step-Down µModule Regulator—
  EN55022 Class B Certified in a 15mm x 15mm Footprint
  Richard Ying and Willie Chan Designers of information technology and communications systems have come
  face-to-face with the difficult challenge of producing feature-rich, power-hungry
  products that comply with international EMI standards. Prior to sale, all information
  technology equipment (ITE)—commonly defined as having a regulated clock
  signal greater than 9kHz—must meet government standards such as FCC Part
  15 Subpart B in the United States, and EN55022 in the European Union. Both
  standards define maximum allowable radiated emission for industrial and commercial
  environments (Class A) and home environments (Class B) as shown in Figure 1.
  EMI RADIATION SOURCES Electromagnetic waves radiate from any
  switching converter and its interface leads.
  Pulsating voltages and currents associated
  with the switching action of all switch
  mode converters from ideal sources generate and directly influence the strength
  of radiated electromagnetic waves.
  Furthermore, parasitic devices within the Electromagnetic Theory and EMI Switch Mode Regulators
  A short reflection on electromagnetic theory can help
  one understand the EMI implications of high current,
  high power DC/DC step-down converters. switching cycle. Maxwell’s equations tell us that a
  constantly varying electric field creates a selfsustaining electromagnetic wave. Gauss’ law states that the strength of an electric
  field in a given area over an enclosed volume is
  proportional to the total charge inside it. If currents change rapidly, as is the case in a switch …

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Классификация производителя

• Power Management > Switching Regulator > Ultralow Noise Regulators
• µModule Solutions > µModule Regulators > µModule Buck Regulators | Extended Temperature (H & MP) µModule Regulators