Floating Output DC-DC Converter Using Single Winding Reactor and Its Applications
●Introduction
■Networking based on a PC server is becoming increasingly popular and uninterruptible power supplies (UPS) need to be made more compact, lightweight and cheaper. The typical UPS now functions not only as a backup power supply during a power failure, but also improves the power factor and cleans the commercial power supply by absorbing the harmonics that are generated by equipment acting as loads.
■To achieve such targets, various rectifier circuits have been developed for UPSs. Although Sanyo Denki has been marketing step-up chopper type and high frequency insulation type products, various problems as discussed in Chapter 2 of this paper make it difficult to use the products with 200 V input.
■We report here on recent developments and a new product using a DC-DC converter that can generate an output that is floating (separated) from the input. The new product is the 3 kVA UPS using the technology in the rectifier circuit. The operating system of this DC-DC converter and UPS, and its characteristics are described.
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Floating Output DC-DC Converter 、 UPS 、 uninterruptible power supplies |
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Technical Documentation |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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Nov. 1998 |
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3.6 MB |
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