公开(公告)号：US11233455B2

公开(公告)日：2022-01-25

申请号：US16993360

申请日：2020-08-14

Applicant: INNO-TECH CO., LTD.

Inventor： Shu-Chia Lin ,  Tsu-Huai Chan ,  Chih-Feng Lin

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

Abstract: Disclosed is a variable-frequency power controller. The controller includes a power pin, a ground pin, a driving pin, a voltage sensing pin, and a loading voltage sensing pin, and is in collocation with a rectification unit, an inductor unit, a switch unit, an output unit, a voltage sensing unit, and a loading voltage sensing unit to implement a variable-frequency power control of power conversion. The controller performs one of the burst mode, valley switch mode, quasi-resonance (QR) mode, conduction mode, and peak loading mode based on a wide range of loading level. In particular, the loading level covered by the present invention includes the ultra-light, light, middle, full, and over-heavy loading, and the features of power saving, low switching loss, operation safety are thus achieved. Further, any over design employed to meet the wide range of loading level is prevented.

公开(公告)号：US20210336532A1

公开(公告)日：2021-10-28

申请号：US16922053

申请日：2020-07-07

Applicant: INNO-TECH CO., LTD.

Inventor： Shu-Chia Lin ,  Tsu-Huai Chan ,  Chih-Feng Lin

IPC: H02M1/42 ,  H02M1/08

Abstract: Disclosed is a method of controlling a time parameter performed by a power controller having a power pin, a ground pin, a driving pin, a time parameter selecting pin, a feedback pin, and a current sensing pin. The power controller is in collocation with a rectification unit, a transformer, a switch unit, a power output unit, and a feedback unit. A Pulse Width Modulation (PWM) frequency of a driving signal, an Over-Voltage Protection (OVP) delay time, and an Under-Voltage Protection (UVP) delay time are preset in the power controller. An external time parameter selecting signal is received through the time parameter selecting pin to dynamically update the PWM frequency, the OVP delay time, or the UVP delay time, thereby greatly increasing efficiency of power conversion and avoiding malfunction of OVP or UVP.

公开(公告)号：US20210175812A1

公开(公告)日：2021-06-10

申请号：US16749177

申请日：2020-01-22

Applicant: INNO-TECH CO., LTD.

Inventor： Chih-Feng Lin ,  Shu-Chia Lin ,  Tsu-Huai Chan

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/44

Abstract: Disclosed is a dynamic regulation power controller having a work voltage input pin, a feedback voltage input pin, a driving voltage output pin, a current sensing input pin, and a regulation power input pin, and being in collocation with a switching unit, an input power processing unit, a transformer, a current sensing resistor, a power regulation unit, an output rectification unit, and an output capacitor for converting an input AC voltage into an output voltage for supplying a load. In particular, the driving voltage and the driving current are dynamically adjusted according to the feedback voltage and the current sensing signal, thereby greatly increasing efficiency of power conversion and Electromagnetic Interference (EMI).

公开(公告)号：US10164513B1

公开(公告)日：2018-12-25

申请号：US16104910

申请日：2018-08-19

Applicant: INNO-TECH CO., LTD.

Inventor： Chih-Feng Lin ,  Shu-Chia Lin ,  Ching-Yuan Lin ,  Wen-Yueh Hsieh

IPC: H02M1/08 ,  H02M3/335 ,  H02M1/00

Abstract: Disclosed is a method of acquiring input and output voltage information by employing a pulse width modulation (PWM) controller, which is in collocation with an input power processing unit, a primary inductor, a switch element, a current-sensing resistor, an output rectifier, and an output filter for converting an alternating current input power into an rectified input power and an output power, and the output power supplies an external load. A current-sensing signal is specifically disposed and applied to calculation of the input voltage and output voltage of the rectified input power when the switch element is turned on and off, respectively. Thus, no resistive voltage divider is needed, and power consumption at no load is greatly improved.

公开(公告)号：US20170346405A1

公开(公告)日：2017-11-30

申请号：US15164939

申请日：2016-05-26

Applicant: INNO-TECH CO., LTD.

Inventor： Ching-Yuan Lin ,  Shu-Chia Lin ,  Wen-Yueh Hsieh ,  Chih Feng Lin

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33515 ,  H02M1/08 ,  H02M3/33507 ,  H02M2001/0009 ,  H02M2001/0032 ,  H02M2001/0054 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02B70/16

Abstract: Disclosed is a dual-mode operation controller in collocation with an input capacitor, a flyback transformer, a first primary-side switch, a second primary-side switch, a current-sensing resistor, a primary-side voltage-sensing unit, a secondary-side rectifier, and an output capacitor as a Primary-Side Regulation (PSR) flyback converter, which is dynamically controlled to operate in two operating modes, including Quasi-Resonant-Discontinuous Conduction Mode (QR-DCM) and Continuous Conduction Mode (CCM), in accordance with a loading condition so as to convert a unregulated DC input voltage source into a regulated DC output voltage source. The dual-mode operation controller has at least 5 pins, and the flyback transformer includes a primary-side winding, a secondary-side winding, and an auxiliary winding. The first primary-side and second primary-side switches are connected in series with the current-sensing resistor and placed at the low side of the primary-side winding, and the second primary-side switch is driven by the dual-mode operation controller.

公开(公告)号：US09742292B2

公开(公告)日：2017-08-22

申请号：US15047629

申请日：2016-02-19

Applicant: INNO-TECH CO., LTD.

Inventor： Shu-Chia Lin ,  Ching-Yuan Lin ,  Chih Feng Lin

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M1/08 ,  H02M3/33515 ,  H02M2001/0009

Abstract: A multifunction power conversion device for dynamical detection includes an input filter unit, a transformer, a switching transistor, a driving controller, a feedback unit and an output unit. Two sensing signals from the primary and auxiliary coils of the transformer form a current sensing zero detection signal. The digital control unit of the driving controller determines if a current flowing through a secondary coil of the transformer is reduced to zero due to discharging, and further finds valley of the current of the secondary coil. The switching transistor is turned on after a preset number of the valley and then turned off by a process of current sense. Therefore, the present invention greatly reduces switching loss, increases efficiency of power conversion, and particular, enhances flexibility of application to meet actual requirements by simply updating program executed by the digital control unit.

公开(公告)号：US20170214322A1

公开(公告)日：2017-07-27

申请号：US15221817

申请日：2016-07-28

Applicant: INNO-TECH CO., LTD.

Inventor： Shu-Chia Lin ,  Ching-Yuan Lin ,  Wen-Yueh Hsieh ,  Chih Feng Lin

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

CPC classification number: H02M3/33576 ,  H02M1/4258 ,  H02M2001/0009 ,  Y02B70/126

Abstract: Disclosed is an isolated power conversion system for providing a function of isolated power conversion by converting an AC power into a DC output power, and a rectifying unit, a transformer, a switching transistor, a first pulse width modulation (PWM) controller, a second PWM controller, an output unit and a signal blocking unit are included. The signal blocking unit is employed as a connection interface between the first and second PWM controllers to provide digital signal for communication. Noise margin and stability of electrical operation are improved to avoid malfunction. Overall, the present invention greatly enhances stability of power conversion and secures quality of electrical signal.

公开(公告)号：US09276481B2

公开(公告)日：2016-03-01

申请号：US14029796

申请日：2013-09-18

Applicant: INNO-TECH CO., LTD.

Inventor： Ching-Yuan Lin ,  Shu-Chia Lin ,  Chih Feng Lin

IPC: H02M3/335 ,  H02M7/02 ,  H02M7/04 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M3/33507 ,  H02M7/02 ,  H02M7/043 ,  H02M2001/0009 ,  H02M2001/0054 ,  Y02B70/1491

Abstract: A power control device for dynamically adjusting frequency includes an electric transformer, a controller, a loading feedback unit, and a switching transistor. The electric transformer includes a first side induction coil connected to an input power unit, a second side induction coil connected to a loading unit to generate an output power by electromagnetic induction with the first side induction coil, and an auxiliary induction coil generating a power sensing signal by electromagnetic induction with the first side induction coil. The loading feedback unit generates a loading feedback signal. The controller determines the level of loading based on the loading feedback signal and further detects the valleys of the power sensing signal so as to change the switching signal which controls the switching transistor at the optimal one of the valleys.

Abstract translation: 用于动态调整频率的功率控制装置包括电力变压器，控制器，负载反馈单元和开关晶体管。 电动变压器包括连接到输入功率单元的第一侧感应线圈和连接到负载单元的第二侧感应线圈，以通过第一侧感应线圈的电磁感应产生输出功率，以及产生功率感测的辅助感应线圈 通过第一侧感应线圈的电磁感应信号。 负载反馈单元产生负载反馈信号。 控制器基于负载反馈信号确定负载水平，并进一步检测功率感测信号的谷值，以便改变在最佳一个谷中控制开关晶体管的开关信号。

公开(公告)号：US20140218975A1

公开(公告)日：2014-08-07

申请号：US14022231

申请日：2013-09-10

Applicant: INNO-TECH CO., LTD.

Inventor： Ching-Yuan Lin ,  Shu-Chia Lin ,  Chih Feng Lin

IPC: H02M3/335

CPC classification number: H03K7/08 ,  H02M1/08 ,  H02M1/38 ,  H02M3/33507

Abstract: A power conversion system with adjustable frequency includes an electric transformer, a pulse width modulation driving controller, a switching transistor, a first and second voltage division resistors connected in series, an output diode and an output capacitor. The electric transformer receives the input power and generates the sensing current and induced current. The sensing current flows through the first and second voltage division resistors to generate the feedback signal. The induced current flows through the output diode and output capacitor to generate the output voltage to supply the load. The pulse width modulation driving controller determine whether the loading state of the load based on the feedback signal, and change the switching frequency according to the loading state and the input power, thereby increasing the whole efficiency of the power conversion system and achieving the aim of dynamically adjusting the optimal frequency.

Abstract translation: 具有可变频率的电力转换系统包括电变压器，脉宽调制驱动控制器，开关晶体管，串联连接的第一和第二分压电阻器，输出二极管和输出电容器。 变压器接收输入功率并产生感应电流和感应电流。 感测电流流过第一和第二分压电阻器以产生反馈信号。 感应电流流过输出二极管和输出电容器，以产生输出电压来提供负载。 脉宽调制驱动控制器根据反馈信号判定负载的负载状态，根据负载状态和输入功率改变开关频率，提高电力变换系统的整体效率，达到目的。 动态调整最佳频率。

公开(公告)号：US20140192563A1

公开(公告)日：2014-07-10

申请号：US14049301

申请日：2013-10-09

Applicant: INNO-TECH CO., LTD.

Inventor： Ching-Yuan Lin ,  Shu-Chia Lin ,  Chih Feng Lin

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A dual-mode switching power control device includes an electric transformer, a PWM driving controller, a switching transistor, an isolation element, an output diode and an output capacitor. The PWM driving controller is connected to the switching transistor coupled to the electric transformer. The first side inductor of the electric transformer and the switching transistor are coupled to an input power, and the second side inductor of the electric transformer is coupled to the output diode. The output capacitor and a load are connected in series. The output power is converted into a feedback signal by the isolation element. The PWM driving controller determines to perform DCM or CCM based on the feedback signal to control the current flowing through the electric transformer, and the output power is generated. Therefore, the efficiency of power conversion is improved and is suitable for high power applications.

Abstract translation: 双模开关电源控制装置包括电变压器，PWM驱动控制器，开关晶体管，隔离元件，输出二极管和输出电容器。 PWM驱动控制器连接到耦合到电变压器的开关晶体管。 电变压器的第一侧电感器和开关晶体管耦合到输入功率，并且电变压器的第二侧电感器耦合到输出二极管。 输出电容和负载串联。 输出功率由隔离元件转换成反馈信号。 PWM驱动控制器基于反馈信号确定执行DCM或CCM以控制流过电变压器的电流，并且产生输出功率。 因此，功率转换的效率得到提高，适用于大功率应用。