公开(公告)号：US09780637B2

公开(公告)日：2017-10-03

申请号：US14881539

申请日：2015-10-13

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Yu-Chen Liu ,  Jing-Yuan Lin ,  Huang-Jen Chiu ,  Yu-Kang Lo ,  Trong-Nha Quang ,  Po-Jung Tseng

IPC: H02M1/00 ,  H02M3/158 ,  H02M1/08

CPC classification number: H02M1/08 ,  H02M3/158 ,  H02M2001/0048 ,  H02M2001/0054 ,  H02M2001/0058

Abstract: A buck converter includes: a first input terminal; a second input terminal; a first output terminal; a second output terminal; an internal node; a first inductor, a second inductor and a main switch connected in series between the first input terminal and the internal node; a third inductor connected between the internal node and the first output terminal; a fourth inductor connected between the second input terminal and the second output terminal; a first auxiliary switch connected between the internal node and the second output terminal; and a second auxiliary switch connected between the second input terminal and the first output terminal.

公开(公告)号：US09742279B2

公开(公告)日：2017-08-22

申请号：US15003931

申请日：2016-01-22

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Jing-Yuan Lin ,  Tse-Wei Chao ,  Yao-Ching Hsieh ,  Huang-Jen Chiu ,  Yu-Kang Lo ,  Po-Jung Tseng

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M3/1584 ,  H02M2003/1586

Abstract: An interleaved buck converter performs buck conversion by controlling operation of each of two switches thereof between an ON state and an OFF state. The switches have the same switching period and the same ON time interval, and a time delay from switching of one of the switches into the ON state to switching of the other one of the switches into the ON state equals the ON time interval of the switches minus a predetermined time interval.

公开(公告)号：US09698671B2

公开(公告)日：2017-07-04

申请号：US15003923

申请日：2016-01-22

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Jing-Yuan Lin ,  Kuan-Fu Chou ,  Yao-Ching Hsieh ,  Huang-Jen Chiu ,  Yu-Kang Lo ,  Po-Jung Tseng

IPC: H02M1/42 ,  H02M3/335

CPC classification number: H02M1/4241 ,  H02M3/33507 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02P80/112

Abstract: A single-stage AC-to-DC converter includes a bus capacitor, a power factor correcting module, a resonant converting module and a control module. The power factor correcting module generates, based on an AC (alternating current) input voltage, a first control signal and a second control signal, a DC (direct current) bus voltage across the bus capacitor and an intermediate voltage switching between the bus voltage and zero. The resonant converting module generates a DC output voltage based on the intermediate voltage. The control module generates, based on the bus voltage, the first and second control signals, each of which switches between an active state and an inactive state and has a duty cycle associated with the bus voltage.

公开(公告)号：US09490716B2

公开(公告)日：2016-11-08

申请号：US14049456

申请日：2013-10-09

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Po-Jung Tseng ,  Chin-Chuan Huang ,  Sin-Li Lin ,  Yu-Kang Lo ,  Huang-Jen Chiu ,  Jing-Yuan Lin

IPC: H02M3/335

CPC classification number: H02M3/33546 ,  H02M3/33592 ,  Y02B70/1475

Abstract: A power converting device includes a transformer, a first switch coupled to a primary winding of the transformer, a PWM controller which generates a first PWM signal for controlling conduction and non-conduction of the first switch and which generates a control signal that leads the first PWM signal, a rectifier-filter circuit which rectifies an induced voltage generated by a secondary winding of the transformer, a second switch coupled to the secondary winding, and a synchronous rectifier controller which controls conduction and non-conduction of the second switch, and which controls, according to the control signal, the second switch to become non-conductive prior to conduction of the first switch.

Abstract translation: 电力转换装置包括变压器，耦合到变压器的初级绕组的第一开关，PWM控制器，其产生用于控制第一开关的导通和非导通的第一PWM信号，并产生导通第一开关的控制信号 PWM信号，整流滤波电路，其对由变压器的次级绕组产生的感应电压进行整流，耦合到次级绕组的第二开关和控制第二开关的导通和不导通的同步整流器控制器，以及哪个 根据控制信号控制第二开关在第一开关导通之前变得不导通。

公开(公告)号：US09099929B2

公开(公告)日：2015-08-04

申请号：US14047146

申请日：2013-10-07

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Po-Jung Tseng ,  Chin-Chuan Huang ,  Sin-Li Lin ,  Yu-Kang Lo ,  Huang-Jen Chiu ,  Jing-Yuan Lin

IPC: H02M3/137 ,  H02M3/335 ,  H02M1/36 ,  H02M1/00

CPC classification number: H02M3/33592 ,  H02M1/36 ,  H02M2001/0019 ,  Y02B70/1475

Abstract: A power converting device includes a main switch, a synchronous rectifier switch, a rectifier-filter circuit which outputs an output voltage, and a synchronous rectifier control circuit which includes a sampling circuit coupled to the rectifier-filter circuit for outputting a voltage variation signal, a differential amplifier circuit that outputs an amplified signal by adding the output voltage and an offset voltage to the voltage variation signal attenuated thereby, and a comparison circuit that compares the amplified signal with the output voltage so as to output a trigger signal, such that the synchronous rectifier switch is turned on when the main switch is turned off, and is turned off prior to conduction of the main switch.

Abstract translation: 电力转换装置包括主开关，同步整流开关，输出输出电压的整流滤波电路和同步整流控制电路，该电路包括与整流滤波电路耦合的采样电路，用于输出电压变化信号， 差分放大器电路，通过将输出电压和偏移电压加到由其衰减的电压变化信号中来输出放大信号;以及比较电路，其将放大的信号与输出电压进行比较，以便输出触发信号，使得 当主开关关闭时，同步整流开关导通，并在主开关导通之前关闭。

公开(公告)号：US09281751B2

公开(公告)日：2016-03-08

申请号：US14039137

申请日：2013-09-27

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Chien-Yu Lin ,  Wei-Lieh Lai ,  Ya-Jhe Liu ,  Yu-Kang Lo ,  Huang-Jen Chiu ,  Cheng-Ting Lin

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: A voltage control method for a power converter includes: acquiring a current of a first primary side winding of a transformer circuit of the power converter; integrating the acquired current to obtain an average voltage; comparing the average voltage with a reflected voltage associated with a current of a secondary side winding of the transformer circuit; and adjusting a duty cycle of a switch of the power converter based on an obtained comparison result for adjustment of an output voltage of the power converter.

Abstract translation: 一种电力转换器的电压控制方法，包括：获取电力变换器的变压器电路的第一一次侧绕组的电流; 积分所获得的电流以获得平均电压; 将平均电压与与变压器电路的次级侧绕组的电流相关联的反射电压进行比较; 以及基于获得的用于调节功率转换器的输出电压的比较结果来调整功率转换器的开关的占空比。

公开(公告)号：US09673716B2

公开(公告)日：2017-06-06

申请号：US14924859

申请日：2015-10-28

Applicant: LITE-ON TECHNOLOGY CORP.

Inventor： Yu-Chen Liu ,  Jing-Yuan Lin ,  Huang-Jen Chiu ,  Yu-Kang Lo ,  Po-Jung Tseng

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33546 ,  H02M3/33569 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1491 ,  Y02P80/112

Abstract: A resonant converter includes: a transformer including a first primary winding, a second primary winding and a secondary winding, each primary winding having a first end terminal and a second end terminal; a first switch coupled to the first end terminal of the first primary winding; a resonant inductor and a resonant capacitor connected in series between the second end terminal of the first primary winding and the first end terminal of the second primary winding; a second switch coupled between the first end terminals of the first and second primary windings; and a third switch coupled between the second end terminals of the first and second primary windings.