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1. (US20120106206) Power supply with single stage converter for performing power factor correction and resonant conversion

专利局 : 美国
申请号: 13017954 申请日: 31.01.2011
公布号: 20120106206 公布日: 03.05.2012
授权号: 08649189 授权日: 11.02.2014
公布类型: B2
国际专利分类:
H02M 3/335
H 电学
02
发电、变电或配电
M
用于交流和交流之间、交流和直流之间、或直流和直流之间的转换以及用于与电源或类似的供电系统一起使用的设备;直流或交流输入功率至浪涌输出功率的转换;以及它们的控制或调节
3
直流功率输入变换为直流功率输出
22
带有中间变换为交流的
24
用静态变换器的
28
应用有控制极的放电管或有控制极的半导体器件产生中间交流电的
325
应用需要连续使用控制信号的三极管或晶体管式的器件的
335
仅用半导体器件的
申请人: Tang Pak-Chuen
Delta Electronics, Inc.
Ching Kwong-Ming
Poon Chung-Hei
发明人: Tang Pak-Chuen
Ching Kwong-Ming
Poon Chung-Hei
代理人: Witt Evan R.
Kirton McConkie
优先权数据: 2010 1 0528512 27.10.2010 CN
标题: (EN) Power supply with single stage converter for performing power factor correction and resonant conversion
摘要: front page image
(EN)

A power supply has a single stage converter for performing power factor correction to reduce high-frequency harmonics in the input current and performs resonant conversion to achieve zero-voltage switching or zero-current switching for power conversion. The inventive single stage converter includes a switching circuit, a resonant circuit, a power control circuit, and a square wave generator. The switching circuit includes at least one switch and the resonant circuit includes a LLC resonant tank. The power control circuit includes a proportional differential circuit such as a power amplifier configured in a negative feedback topology, and the square wave generator is configured to generate driving signals based on the frequency modulation control signal generated by the comparison of the sensed input current and a user-defined power level input, thereby allowing the square wave generator to regulate the switching operation of the switching circuit.