公开(公告)号：US11190011B2

公开(公告)日：2021-11-30

申请号：US16923647

申请日：2020-07-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chien-An Lai ,  Chang-Yuan Hsu

IPC: H02H9/02 ,  H01H1/00 ,  H02H1/00

Abstract: A surge current suppression circuit includes a switch, a bypass resistor, a detection resistor, and a comparator. The switch is coupled to a first end of an energy storage capacitor in series, wherein a second end of the energy storage capacitor is coupled to a load and receives an input power source. The bypass resistor is coupled to the switch in parallel. The detection resistor is coupled to the switch in series to generate a detection voltage according to a capacitor current flowing through the energy storage capacitor. The comparator compares the detection voltage with a reference voltage to generate a control signal. When the detection voltage is greater than the reference voltage, the control signal controls the switch to be turned off. When the detection voltage is less than the reference voltage, the control signal controls the main switch to be turned on.

公开(公告)号：US20250023277A1

公开(公告)日：2025-01-16

申请号：US18771760

申请日：2024-07-12

Applicant: Delta Electronics, Inc.

Inventor： Chien-An Lai ,  Yu-Tai Wang ,  Hao-Peng Cheng ,  I Chen

IPC: H01R13/24 ,  H01R12/72

Abstract: The present disclosure provides an electrical connection assembly including a first electrical connector and a second electrical connector. The first electrical connector includes a first terminal. The first terminal includes a contact part. The second electrical connector is configured to pluggably connect with the first electrical connector, and includes a second terminal. The second terminal includes a recess. The recess is inwardly recessed from a surface of the second terminal and includes a connection section and a bottom. The connection section is in connection between the bottom and the surface of the second terminal, and includes a plurality of contact portions. The contact part of the first terminal is in connection with the recess of the second terminal, and the contact part of the first terminal is in contact with the bottom and the contact portions of the recess of the second terminal to form a multi-points contact.

公开(公告)号：US11139750B2

公开(公告)日：2021-10-05

申请号：US16840790

申请日：2020-04-06

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chien-An Lai ,  Chang-Yuan Hsu

IPC: H02M7/219 ,  H02M1/38 ,  H02M1/42 ,  H02H7/125

Abstract: An active bridge rectifier circuit includes a rectifier unit and a control unit. The rectifier unit includes a first upper bridge switch, a second upper bridge switch, a first lower bridge switch, and a second lower bridge switch. The control unit includes a first signal comparator and a second signal comparator. The first signal comparator compares a live wire signal provided from a live wire end with a neutral wire signal provided from a neutral wire end to generate a first comparison signal. The second signal comparator compares the live wire signal with the neutral wire signal to generate a second comparison signal. The first comparison signal controls the first upper bridge switch and the first lower bridge switch. The second comparison signal controls the second upper bridge switch and the second lower bridge switch.

公开(公告)号：US09362748B2

公开(公告)日：2016-06-07

申请号：US13732978

申请日：2013-01-02

Applicant: DELTA ELECTRONICS, INC.

Inventor： Cheng-Chan Hsu ,  Chan-Chia Yeh ,  Chien-An Lai

IPC: H02J3/06 ,  H02J3/46 ,  H02J3/48

CPC classification number: H02J3/06 ,  H02J3/46 ,  H02J3/48 ,  Y10T307/549

Abstract: A power system with a combination of active current sharing and droop current sharing is disclosed. The power system includes a system load and plural power supplies connected with each other and connected to the system load. The power supplies are configured to respectively output a load current to the system load, and each power supply includes an active current sharing circuit and a droop current sharing circuit. The active current sharing circuit is configured to enter an operation or shutdown mode depending on whether the load current is higher than a first current set point. The droop current sharing circuit is configured to enter an operation or shutdown mode depending on whether the load current is higher than a second current set point. Hence, each power supply can respectively output an equal share of the load current by an active current sharing technique and/or a droop current sharing technique.

Abstract translation: 公开了具有有源电流共享和下降电流共享的组合的电力系统。 电力系统包括彼此连接并连接到系统负载的系统负载和多个电源。 电源被配置为分别向系统负载输出负载电流，并且每个电源包括有源电流共享电路和下降电流共享电路。 有源电流共享电路被配置为根据负载电流是否高于第一当前设定点进入操作或关断模式。 下降电流共享电路被配置为根据负载电流是否高于第二当前设定点而进入操作或关断模式。 因此，每个电源可以通过有源电流共享技术和/或下降电流共享技术分别输出负载电流的相等份额。

公开(公告)号：US20140049108A1

公开(公告)日：2014-02-20

申请号：US13732978

申请日：2013-01-02

Applicant: DELTA ELECTRONICS, INC.

Inventor： Cheng-Chan Hsu ,  Chan-Chia Yeh ,  Chien-An Lai

IPC: H02J3/06

CPC classification number: H02J3/06 ,  H02J3/46 ,  H02J3/48 ,  Y10T307/549

Abstract: A power system with a combination of active current sharing and droop current sharing is disclosed. The power system includes a system load and plural power supplies connected with each other and connected to the system load. The power supplies are configured to respectively output a load current to the system load, and each power supply includes an active current sharing circuit and a droop current sharing circuit. The active current sharing circuit is configured to enter an operation or shutdown mode depending on whether the load current is higher than a first current set point. The droop current sharing circuit is configured to enter an operation or shutdown mode depending on whether the load current is higher than a second current set point. Hence, each power supply can respectively output an equal share of the load current by an active current sharing technique and/or a droop current sharing technique.

Abstract translation: 公开了具有有源电流共享和下降电流共享的组合的电力系统。 电力系统包括彼此连接并连接到系统负载的系统负载和多个电源。 电源被配置为分别向系统负载输出负载电流，并且每个电源包括有源电流共享电路和下降电流共享电路。 有源电流共享电路被配置为根据负载电流是否高于第一当前设定点进入操作或关断模式。 下降电流共享电路被配置为根据负载电流是否高于第二当前设定点而进入操作或关断模式。 因此，每个电源可以通过有源电流共享技术和/或下降电流共享技术分别输出负载电流的相等份额。

公开(公告)号：US20240429817A1

公开(公告)日：2024-12-26

申请号：US18658334

申请日：2024-05-08

Applicant: Delta Electronics, Inc.

Inventor： Chien-An Lai ,  Lin-Ya Tsai ,  Chang-Yuan Hsu

IPC: H02M3/156 ,  H02M1/00

Abstract: A power supply unit includes an input terminal, an output terminal, a main circuit, an ORing field effect transistor, a driving circuit and a switch. The main circuit is connected between the input terminal and the output terminal. The ORing field effect transistor is connected between the output terminal and the main circuit. The driving circuit is connected with a control terminal of the ORing field effect transistor. The driving circuit generates a control signal to control the ORing field effect transistor. The switch is connected between the driving circuit and the control terminal of the ORing field effect transistor. Before the power supply unit is plugged into a system bus of a power supply system, the control signal from the driving circuit is bypassed by the switch. Consequently, the ORing field effect transistor is turned off.

公开(公告)号：US20240429809A1

公开(公告)日：2024-12-26

申请号：US18656408

申请日：2024-05-06

Applicant: Delta Electronics, Inc.

Inventor： Chien-An Lai ,  I Chen

IPC: H02M1/14 ,  H02M1/42 ,  H02M3/00 ,  H02M3/335

Abstract: A power supply apparatus includes a power factor correction circuit, an LLC converter, an auxiliary conversion circuit, a secondary side controller and a voltage tracking circuit. The power factor correction circuit is used for converting a DC link voltage into a first voltage. The LLC converter includes a primary side circuit and a secondary side circuit, which are coupled with each other. The primary side circuit receives the first voltage. The first voltage is converted into an auxiliary voltage by the auxiliary conversion circuit. The voltage tracking circuit detects the auxiliary voltage and issues a detection signal to the secondary side controller. The secondary side controller tracks a ripple change of the DC link voltage and instantly generates a reverse waveform opposite to a waveform of the DC link voltage. The secondary side controller controls the operations of the LLC converter according to the reverse waveform.

公开(公告)号：US11545891B2

公开(公告)日：2023-01-03

申请号：US17444668

申请日：2021-08-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chien-An Lai ,  Jyun-Jhe Jhang ,  Chien-Yao Liao ,  Ping-Sheng Wu ,  I Chen ,  Chang-Yuan Hsu

IPC: H02M1/42 ,  H02M5/458 ,  H02M3/156 ,  H02M3/158 ,  H02M1/00

Abstract: A power device includes a power factor corrector, an auxiliary capacitor, a switching device, an auxiliary boost circuit, a controller and a voltage conversion device. The switching device has a first end electrically connected to the output end of the power factor corrector, and a second end electrically connected to one end of the auxiliary capacitor. An output end of the auxiliary boost circuit is electrically connected to the output end of the power factor corrector, an input end of the auxiliary boost circuit is electrically connected to a middle end of the switching device, and a ground end of the auxiliary boost circuit is electrically connected to another end of the auxiliary capacitor. The controller is electrically connected to the switching device and the auxiliary boost circuit. The input end of the voltage conversion device is electrically connected to the output end of the power factor corrector.