Sudha C Nashipur, Chandasree Das, Y. S. V. S. Sastry
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引用次数: 0
摘要
要求具有功率因数校正的隔离、稳压输出电压的电源单元通常需要两级转换过程，并且它包含一个输入升压或无桥功率因数校正级，该级将输入线路电压转换、调节为标称的400 V DC。然后，该总线激励一个传统的dc- dc转换器，它可以是任何合适的拓扑结构。本文旨在设计、分析、MATLAB仿真和开发用于通信交换机的紧凑型48v直流、2KW电源单元(PSU)。该模块采用升压功率因数校正器来提高功率因数，然后采用鲁棒LLC谐振变换器来提高效率并实现ZVS。采用UC3855B PFC升压控制器、UCC2895D LLC控制器和附加控制电路对附加参数进行控制。在宽负载范围内，该设计使效率大于93%。
An efficient AC/DC power supply unit design approach used in communication switches
Power supply unit that demands an isolated, regulated output voltage with power factor correction typically necessitate a two stage conversion process and it incorporates an input boost or bridge-less power factor corrector stage which converts, regulates the input line voltage into a nominal 400 V DC. This bus then excites a conventional dc-to-dc converter, which can be any suitable topology. This paper is aimed to design, analysis, MATLAB simulation and development of compact 48-V DC, 2KW power supply unit (PSU) used in communication switches. This module incorporate boost power factor corrector to improve power factor followed by robust LLC resonant converter to increase efficiency and to achieve ZVS. UC3855B PFC boost controller, UCC2895D LLC controller and additional control circuitry is used to control additional parameters. The design enables efficiency greater than 93% over a wide load range.
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