The Essential Guide to Power Supplies is designed for power supply users, considering the many aspects of power supplies & DC/DC converters and their integration into today’s electronic equipment. The new guide includes details on the latest safety legislation such as the new IEC standard to replace IEC60950, new requirements for CE marking and the latest energy efficiency levels required by energy star and the EU code of conduct. | Power Supplies The Essential Guide to Power Supplies is designed for power supply users considering the many aspects of power supplies amp DC DC converters and their integration into today s electronic equipment. The new guide includes details on the latest safety legislation such as the new IEC standard to replace IEC60950 new requirements for CE marking and the latest energy efficiency levels required by energy star and the EU code of conduct. Also included are sections on subjects as varied as green mode topologies power supply de-rating and electrolytic capacitor amp power supply lifetime. Whether you re new to designing-in a power supply or DC-DC converter or an old hand this book offers an invaluable resource and all the information you ll need in one easy reference guide. i Contents Introduction to Power Conversion 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Common Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Linear Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Green Mode Power Supply Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Distributed Power Architectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Input Considerations 18 Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Input Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 AC Input Current amp Harmonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Real Power Apparent Power amp .