公开(公告)号：US20200099219A1

公开(公告)日：2020-03-26

申请号：US16504312

申请日：2019-07-07

Applicant: FSP TECHNOLOGY INC.

Inventor： Yaw-Chien Huang ,  Chun-Hao Yu ,  Kuo-Chieh Chan

IPC: H02H9/02 ,  H02M1/32 ,  G01R15/04

Abstract: A power apparatus, a current detecting circuit and a current detecting method are provided. The power apparatus includes a power conversion circuit and the current detecting circuit. The power conversion circuit generates an output current. The current detecting circuit includes first and second current sensing resistors and a control circuit. The first current sensing resistor and the second current sensing resistor sense the output current to generate first and second sensing voltage, respectively. The control circuit receives the first sensing voltage and the second sensing voltage, and converts the first sensing voltage and the second sensing voltage respectively into a first current sensing value and a second current sensing value. The control circuit triggers a protection mechanism when the first current sensing value is greater than a first overcurrent protection value. In the case where the first current sensing value is not greater than the first overcurrent protection value, the control circuit triggers the protection mechanism if the second current sensing value is greater than a second overcurrent protection value. The first overcurrent protection value is greater than the second overcurrent protection value.

公开(公告)号：US20180375427A1

公开(公告)日：2018-12-27

申请号：US16005707

申请日：2018-06-12

Applicant: FSP TECHNOLOGY INC.

Inventor： Kuo-Fan Lin

IPC: H02M1/42 ,  H02M7/219 ,  H03K17/0812 ,  H02M7/5387 ,  H03K17/06 ,  H02M3/158

CPC classification number: H02M1/4233 ,  H02M3/1588 ,  H02M7/219 ,  H02M7/5387 ,  H02M2007/2195 ,  H03K17/063 ,  H03K17/08122 ,  H03K2017/307

Abstract: A rectifier, including: a first and a second input terminal, a first output terminal and at least one rectifying circuit. Each rectifying circuit including: a switching circuit including a transistor, and a driving circuit. The driving circuit is coupled to the switching circuit and controls a switching status of the switching circuit, and includes a totem-pole circuit and an input transistor. The totem-pole circuit includes an input terminal and an output terminal coupled to the transistor. The input transistor is coupled between the totem-pole circuit and the switching circuit. The at least one rectifying circuit includes a first and a second rectifying circuit. The transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first output terminal. The input transistors of the first rectifying circuit and the second rectifying circuit are coupled to the first input terminal and the second input terminal, respectively.

公开(公告)号：US10077780B2

公开(公告)日：2018-09-18

申请号：US14561152

申请日：2014-12-04

Applicant: FSP TECHNOLOGY INC.

Inventor： Chien-Li Tsai

IPC: F04D27/00

CPC classification number: F04D27/004

Abstract: A method for controlling a fan speed of an electronic apparatus and the electronic apparatus using the same are provided. The method includes: detecting an input voltage, an output current, and a working temperature of the electronic apparatus; calculating a target speed of the fan according to the input voltage, the output current, and the working temperature; providing a speed control signal indicating the target speed to drive the fan and obtaining a fan speed signal indicating an actual speed of the fan; and performing a close-loop control based on the fan speed signal, so that the actual speed is adjusted to the target speed.

公开(公告)号：US20180213687A1

公开(公告)日：2018-07-26

申请号：US15878424

申请日：2018-01-24

Applicant: FSP Technology Inc.

Inventor： Po-Chang Lu ,  Wun-Liang Luo

IPC: H05K7/20

CPC classification number: H05K7/20927 ,  G06F1/20 ,  G06F1/26 ,  G06F2200/201 ,  H05K7/20145 ,  H05K7/20254 ,  H05K7/20272

Abstract: A power supply apparatus includes a case, a circuit board, at least one heating element, and at least one internal liquid cooling heat-dissipation structure. The heating element is disposed in the case and electrically connected to the circuit board. The internal liquid cooling heat-dissipation structure is disposed in the case and located in at least one of manners which include being located between the case and the circuit board and being located between the case and the heating element. The internal liquid cooling heat-dissipation structure includes a tank and a heat conducting sheet. The tank includes an internal pipe. A working fluid is adapted to be filled in the internal pipe. The heat conducting sheet is assembled to the tank. The heat generated by the heat element is transmitted to the tank through the heat conducting sheet and dissipated by the working fluid circulating in the internal pipe.

公开(公告)号：US09811139B2

公开(公告)日：2017-11-07

申请号：US14561162

申请日：2014-12-04

Applicant: FSP TECHNOLOGY INC.

Inventor： Chien-Li Tsai

IPC: G06F1/30 ,  H02J9/06 ,  H02J1/10 ,  G06F1/26

CPC classification number: G06F1/30 ,  G06F1/263 ,  H02J1/10 ,  H02J9/061 ,  Y10T307/344

Abstract: An apparatus and a method for power supply are provided. The apparatus for power supply includes a main power circuit, an auxiliary power circuit and a power switching control circuit. The main power circuit is configured to generate a main power suitable to be provided to a first load and a second load for use. The auxiliary power circuit is configured to generate an auxiliary power suitable to be provided to the second load for use. The power switching control circuit is configured to detect a voltage difference between the main power and the auxiliary power and determine whether the apparatus meets a normal power supply condition, so as to select one of the main power and auxiliary power as a power source of the second load.

公开(公告)号：US09741503B2

公开(公告)日：2017-08-22

申请号：US14623470

申请日：2015-02-16

Applicant: FSP TECHNOLOGY INC.

Inventor： Han-Wei Chen ,  Chun-Hao Yu ,  Chia-Hua Liu

IPC: H01H9/54 ,  H01H47/22

CPC classification number: H01H9/54 ,  H01H47/22 ,  Y10T307/747

Abstract: The invention provides a control circuit of a switch device. A single output pin of the control unit outputs an enable signal to control terminals of two switch units to control an on-state of the two switch units, and adjust a current size of a control current of the on-state of the switch device. One of the switch units after receiving the enable signal for a predetermined time is switched to an off-state, so as to reduce power consumption of the switch device.

公开(公告)号：US09608434B2

公开(公告)日：2017-03-28

申请号：US14630605

申请日：2015-02-24

Applicant: FSP TECHNOLOGY INC.

Inventor： Han-Wei Chen ,  Chun-Hao Yu ,  Chia-Hua Liu

IPC: H02M1/36 ,  H02H7/12 ,  H02M3/24 ,  H02M7/44 ,  H02M1/32 ,  H02M7/48 ,  H02H3/20 ,  H02J5/00 ,  H02M1/00

CPC classification number: H02H7/1213 ,  H02H3/202 ,  H02J5/00 ,  H02M1/32 ,  H02M1/36 ,  H02M3/24 ,  H02M7/44 ,  H02M7/48 ,  H02M2001/007

Abstract: An inverter apparatus includes a direct current to direct current converter (DC/DC converter), a direct current to alternating current converter (DC/AC converter), a primary-side control circuit and a secondary-side control circuit. The DC/DC converter is arranged for outputting a first DC power and a second DC power. The DC/AC converter is coupled to the DC/DC converter, and is arranged for receiving the first DC power. The primary-side control circuit is coupled to the DC/DC converter, and is arranged for controlling an operation of the DC/DC converter. The secondary-side control circuit is coupled to the DC/DC converter and the DC/AC converter, and is arranged for receiving the second DC power, and controlling an operation of the DC/AC converter according to the second DC power.

公开(公告)号：US20170047838A1

公开(公告)日：2017-02-16

申请号：US15202579

申请日：2016-07-06

Applicant: FSP TECHNOLOGY INC.

Inventor： Kuo-Fan Lin

IPC: H02M1/44 ,  H02M7/06 ,  H01R24/68

CPC classification number: H01R24/68 ,  H01R13/6658 ,  H01R2103/00 ,  H02M7/003 ,  H02M7/12

Abstract: A power adapter including a main circuit board and an auxiliary circuit board is provided. The main circuit board has a first surface and a second surface opposite to each other, and the first surface of the main circuit board is configured with a transformer and a first capacitor. The auxiliary circuit board has a first surface and a second surface opposite to each other, and the first surface of the auxiliary circuit board is configured with an input rectifier filter circuit, where the auxiliary circuit board is disposed in parallel above the main circuit board, and the input rectifier filter circuit of the auxiliary circuit board is electrically connected to the first capacitor of the main circuit board. Under a condition of same electrical parameters and dimensions, the volume of the power adapter of the invention is only a half of that of the existing power adapter, which satisfies a demand for miniaturization of the electronic devices.

Abstract translation: 提供了包括主电路板和辅助电路板的电源适配器。 主电路板具有彼此相对的第一表面和第二表面，并且主电路板的第一表面配置有变压器和第一电容器。 辅助电路板具有彼此相对的第一表面和第二表面，并且辅助电路板的第一表面配置有输入整流器滤波电路，其中辅助电路板平行设置在主电路板上方， 并且辅助电路板的输入整流滤波电路电连接到主电路板的第一电容器。 在相同的电气参数和尺寸的条件下，本发明的电力适配器的体积只是现有电力适配器的体积的一半，其满足电子设备的小型化需求。

公开(公告)号：US20160344283A1

公开(公告)日：2016-11-24

申请号：US15159794

申请日：2016-05-19

Applicant: FSP TECHNOLOGY INC.

Inventor： Kuo-Fan Lin

IPC: H02M1/42 ,  H02M1/36 ,  H02M1/08 ,  H02M3/335

CPC classification number: H02M1/36 ,  H02M1/4225 ,  H02M3/33507 ,  H02M2001/007 ,  Y02B70/126 ,  Y02P80/112

Abstract: A management circuit for a power supply is provided. The power supply includes a power factor correction circuit and a power conversion circuit. An output of the power factor correction circuit is coupled to an input of the power conversion circuit. The management circuit includes a power factor correction controller, a pulse width modulation controller and a control circuit. The power factor correction controller controls power factor correction of the power factor correction circuit. The pulse width modulation controller controls power conversion of the power conversion circuit. The control circuit selectively activates the pulse width modulation controller according to a first activated signal generated by an input power of the power supply. After the pulse width modulation controller is activated, the control circuit generates a second activated signal based on the first activated signal. The control circuit activates the power factor conversion controller according to the second activated signal.

Abstract translation: 提供用于电源的管理电路。 电源包括功率因数校正电路和功率转换电路。 功率因数校正电路的输出耦合到功率转换电路的输入端。 管理电路包括功率因数校正控制器，脉宽调制控制器和控制电路。 功率因数校正控制器控制功率因数校正电路的功率因数校正。 脉宽调制控制器控制电源转换电路的功率转换。 控制电路根据由电源的输入功率产生的第一激活信号选择性地激活脉宽调制控制器。 在脉宽调制控制器被激活之后，控制电路基于第一激活信号产生第二激活信号。 控制电路根据第二激活信号激活功率因数转换控制器。

公开(公告)号：US09455635B2

公开(公告)日：2016-09-27

申请号：US14465855

申请日：2014-08-22

Applicant: FSP TECHNOLOGY INC.

Inventor： Kuo-Fan Lin

IPC: H02M1/34 ,  H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/335 ,  H02M2001/342 ,  H02M2001/344 ,  Y02B70/1491

Abstract: A snubber circuit includes a capacitor and a buffer device. The buffer device has a first terminal and a second terminal. The first terminal is electrically connected to the capacitor. When the buffer device operates in a first conduction mode, a charge current flows from the second terminal to the first terminal through the buffer device. When the buffer device switches from the first conduction mode to a second conduction mode, the buffer device generates a discharge current which flows from the first terminal to the second terminal through the buffer device over a specific period of time, such that after the buffer device enters the second conduction mode, a relative maximum voltage level appearing first at the second terminal is lower than a voltage level at the first terminal.

Abstract translation: 缓冲电路包括电容器和缓冲装置。 缓冲装置具有第一端子和第二端子。 第一端子电连接到电容器。 当缓冲器件以第一导通模式工作时，充电电流从第二端子通过缓冲器件流向第一端子。 当缓冲器件从第一导通模式切换到第二导通模式时，缓冲器件产生在特定时间段内通过缓冲器从第一端子流到第二端子的放电电流，使得在缓冲器件 进入第二导通模式，在第二端子处首先出现的相对最大电压电平低于第一端子处的电压电平。