公开(公告)号：US20150103564A1

公开(公告)日：2015-04-16

申请号：US14497306

申请日：2014-09-25

Applicant: FSP-Powerland Technology Inc. ,  FSP TECHNOLOGY INC.

Inventor： Fei-Yue Duan ,  Ming Xu

IPC: H02M3/335

CPC classification number: H02M3/3376 ,  H02M3/285 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02P80/112

Abstract: A parallel resonant converter including a control circuit and at least two resonant conversion circuits connected in parallel between an input bus and an output bus is provided by the invention. The control circuit is configured to provide a switching frequency signal to the at least two resonant conversion circuits. Moreover, the control circuit is further configured to control the voltage of the output bus to linearly vary along with the switching frequency signal in a rated range by using a linear current-balancing curve (gain-frequency), and thus achieving the purpose of current-balancing for the at least two resonant conversion circuits. The invention is capable of controlling the output voltage of the parallel resonant converter, so as to reduce the ripple on the output voltage of the power supply system.

Abstract translation: 本发明提供并联谐振变换器，其包括控制电路和至少两个谐振变换电路并联连接在输入总线和输出总线之间。 控制电路被配置为向至少两个谐振转换电路提供开关频率信号。 此外，控制电路还被配置为通过使用线性电流平衡曲线（增益 - 频率）来控制输出总线的电压与开关频率信号在额定范围内线性变化，从而实现电流的目的 用于至少两个谐振转换电路的平衡。 本发明能够控制并联谐振变换器的输出电压，以便减小电源系统的输出电压上的纹波。

公开(公告)号：US20150036397A1

公开(公告)日：2015-02-05

申请号：US14324086

申请日：2014-07-04

Applicant: FSP-Powerland Technology Inc. ,  FSP TECHNOLOGY INC.

Inventor： Chuan-Yun Wang ,  Ming Xu ,  Jian-Guo Mu

IPC: H02M1/32

CPC classification number: H02M1/32 ,  H02M7/5387 ,  H02M2001/0009

Abstract: An inverter and an over current protection method thereof are provided. The inverter includes an inverting circuit, a filtering capacitor and an over current protection circuit. The inverting circuit is configured to convert a DC input voltage into an AC output voltage and provide the AC output voltage to a load. The filtering capacitor is coupled to the inverting circuit and the load in parallel. The over current protection circuit is coupled to the inverting circuit and the filtering capacitor and configured to provide an over current protection mechanism. The over current protection circuit detects an AC current on the filtering capacitor and determines whether to enable the over current protection mechanism according to the AC current in order to restrain the power conversion operation of the inverting circuit.

Abstract translation: 提供了一种逆变器及其过电流保护方法。 逆变器包括反相电路，滤波电容器和过流保护电路。 反相电路被配置为将DC输入电压转换为AC输出电压并将AC输出电压提供给负载。 滤波电容器并联耦合到反相电路和负载。 过电流保护电路耦合到反相电路和滤波电容器，并配置成提供过流保护机构。 过流保护电路检测滤波电容器上的交流电流，并根据交流电流确定是否使能过电流保护机构，以抑制反相电路的电力转换操作。

公开(公告)号：US11211867B2

公开(公告)日：2021-12-28

申请号：US16745373

申请日：2020-01-17

Applicant: FSP-Powerland Technology Inc.

Inventor： Ming Xu

IPC: H02M3/158 ,  H02M1/00

Abstract: The present disclosure discloses a voltage regulating apparatus, including a pre-stage circuit and a post-stage circuit. The pre-stage circuit receives an input voltage and outputs an intermediate bus voltage, and the post-stage circuit receives the intermediate bus voltage and outputs an output voltage. The post-stage circuit includes a plurality of post-stage converters, the post-stage converters are connected in parallel in an interleaved manner. In this way, the post-stage circuit has a small inductance, thereby reducing the volume of the apparatus and increasing the power density of the apparatus.