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From XP Power
Changes in power supply design are rarely revolutionary. Rather, they are evolutionary and dependent upon a host of component and manufacturing technologies that, for the most part, develop at a modest pace. Moore’s law simply doesn’t apply to power supply design; if it did, a 200 W switcher the size of a thumbnail would have arrived some time ago. However, even marginally improved versions of some critical components can have a dramatic affect on power supply size. In this article we take a look at the technologies that impact the design of 50 W to 200 W AC/DC switchers and the contribution each makes to the overall size of the end product. In doing so, I aim to give some guidance to engineers who design power supplies in-house but also to help engineers who specify power supplies from external sources to better understand the solutions they are offered and the potential specification trade-offs that they may face. Products & Services
Specialty or proprietary products and accessories related to power supplies.
High voltage power supplies use linear technology to provide one or more DC outputs at voltage levels of hundreds or thousands of volts.
Power over Ethernet (PoE) injectors supply or inject DC power through network cables to power network devices. They are sometimes called midspans or midspan hubs.
Plasma power supplies are DC and RF devices used in plasma generation equipment for applications such as sputtering, plasma etching, physical vapor deposition (PVD) coating, and chemical vapor deposition (CVD) coating.
DC power supplies accept an input power and output the desired form of DC power. Common types of DC power supplies include linear power supplies, switching power supplies, DC-DC converters, and silicon controlled rectifier (SCR) type power supplies.
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Topics of Interest
The design of AC/DC power supplies is inevitably evolutionary, rather than revolutionary. It develops largely as a result of gradual improvements in semiconductors and passive component technologies...
(Read More)
Improvements in AC/DC power supply design are evolutionary, rather than revolutionary. It’s easy to settle for tried-and-tested approaches because no one new design technique is likely to yield great...
(Read More)
Much has changed in the power conversion field since the author’s
previous book on switching power supply design (Switching and Linear
Power Supply, Power Converter Design, 1978).
The main...
(Read More)
In many applications it is desirable to charge multiple capacitor banks with one or more power supplies ganged together. In some cases the banks must be isolated with diodes to allow the banks to fire...
(Read More)
The authors of this book have been associated with uninterruptible
and standby power supplies for many years. The origin of the book could
be said to go back to the 1980s when the authors became...
(Read More)
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