公开(公告)号：US20220407247A1

公开(公告)日：2022-12-22

申请号：US17834109

申请日：2022-06-07

Applicant: OMRON Corporation

Inventor： Masaaki NAGANO ,  Tomonori WATANABE ,  Kohei TANINO

IPC: H01R9/24 ,  H02M3/335 ,  H02M7/5395 ,  H02M1/00 ,  H03K17/081

Abstract: A terminal protection voltage detector circuit is provided for protecting a terminal block having output terminals in a power supply apparatus. A current detector detects output currents flowing from the power supply apparatus to loads via output terminals, and a first comparator configured to compare a sum of the detected output currents with a predetermined first threshold and output a first comparison result signal when the sum of output currents is larger than or equal to the first threshold. A second comparator configured to compare a maximum value of detected output currents with a predetermined second threshold and output a second comparison result signal when the maximum value is equal to or larger than the second threshold. A current stop circuit stops a current from flowing from the power supply apparatus to the output terminals based on the first or second comparison result signal.

公开(公告)号：US20200044560A1

公开(公告)日：2020-02-06

申请号：US16521643

申请日：2019-07-25

Applicant: OMRON Corporation

Inventor： Masaaki NAGANO ,  Kohei TANINO

IPC: H02M1/32 ,  H02M3/155

Abstract: A power supply circuit includes: a coil having a first end that receives an input voltage and a second end; a transistor connected to the second end of the coil; a first capacitor connected to the second end of the coil; and a surge protection circuit connected to the second end of the coil in parallel with the first capacitor. The surge protection circuit includes a diode, a second capacitor, and a resistance. The diode, the second capacitor, and the resistance are connected in series to the second end of the coil.

公开(公告)号：US20240128882A1

公开(公告)日：2024-04-18

申请号：US18485426

申请日：2023-10-12

Applicant: OMRON Corporation

Inventor： Kohei TANINO ,  Masaaki NAGANO ,  Tomonori WATANABE

IPC: H02M3/335 ,  H02M1/088 ,  H02M1/32

CPC classification number: H02M3/33576 ,  H02M1/088 ,  H02M1/327

Abstract: A diode is connected between a DC power supply and switching elements, a forward direction of the diode being defined from the DC power supply to the switching elements. A relay is connected in parallel to the diode. A relay control circuit controls the relay to be turned off when an input voltage starts to be applied to a power converter apparatus, and to be turned on when a forward voltage is applied to the diode.

公开(公告)号：US20230010478A1

公开(公告)日：2023-01-12

申请号：US17860356

申请日：2022-07-08

Applicant: OMRON Corporation

Inventor： Masaaki NAGANO ,  Kohei TANINO ,  Tomonori WATANABE

IPC: H02M3/335 ,  H01R9/24

Abstract: A power device includes a plurality of terminal blocks electrically connected to each other. Each of the plurality of terminal blocks is configured to be connectable to an external device and to be capable of supplying current to the connected external device. Each of the plurality of terminal blocks includes a current supply circuit that supplies current to the connected external device, and a current setting unit that sets a maximum current to be supplied to the external device via the current supply circuit.

公开(公告)号：US20230044689A1

公开(公告)日：2023-02-09

申请号：US17880088

申请日：2022-08-03

Applicant: OMRON Corporation

Inventor： Tomonori WATANABE ,  Kohei TANINO ,  Masahiko KUBO ,  Masaaki NAGANO

IPC: H01R9/24

Abstract: A terminal block attachable to a control device includes a main body including a wiring connection part to which wiring is connected, a first rotation mechanism unit arranged at a first end in a first direction of the main body, and a second rotation mechanism unit arranged at a second end in the first direction of the main body. The first rotation mechanism unit and the second rotation mechanism unit are configured that the main body is rotatable about an imaginary straight line extending along the first direction with respect to the control device. The wiring connection part is arranged at an end of the main body in a radial direction with respect to the imaginary straight line.

公开(公告)号：US20200044575A1

公开(公告)日：2020-02-06

申请号：US16386274

申请日：2019-04-17

Applicant: OMRON Corporation

Inventor： Masaaki NAGANO ,  Kohei TANINO

IPC: H02M3/335

Abstract: An LLC type switching power supply device in which a burst operation hardly occurs at the time of a light load is provided. A switching power supply device includes an LLC resonant converter. The LLC resonant converter includes a transformer, a first capacitor connected to a primary winding of the transformer, a switching circuit which controls power transmission to the transformer and the first capacitor, a rectification circuit connected to a secondary winding of the transformer, a second capacitor connected to the rectification circuit, and an output terminal connected to the rectification circuit and the second capacitor. The switching power supply device further includes a stabilizing circuit which is connected to the output terminal and consumes power at the time of a light load of the LLC resonant converter.

公开(公告)号：US20230314489A1

公开(公告)日：2023-10-05

申请号：US18019986

申请日：2021-03-08

Applicant: OMRON Corporation

Inventor： Masaaki NAGANO ,  Kohei TANINO ,  Kosuke SUMI ,  Yohei TAKASHIMA ,  Tomonori WATANABE ,  Kosuke YOSHIMARU

IPC: G01R19/32

CPC classification number: G01R19/32

Abstract: To provide voltage detection device capable of reducing variations and errors in detection voltage caused by influence of configuration of pattern wiring and temperature when detecting voltages applied to a plurality of resistance elements connected in parallel. Voltage detection device includes resistance unit including a plurality of resistance elements connected in parallel, differential amplifier circuit, first connection portion having two wiring portions connecting positions different from each other in one end portion of resistance unit and input terminal of differential amplifier circuit, and second connection portion having two wiring portion connecting positions different from each other in other end portion of resistance unit and input terminal of differential amplifier circuit. Voltage detection device configures to detect voltage applied to resistance unit based on voltage of output terminal of differential amplifier circuit.

公开(公告)号：US20230128678A1

公开(公告)日：2023-04-27

申请号：US17801683

申请日：2020-12-16

Applicant: OMRON Corporation

Inventor： Kohei TANINO ,  Masaaki NAGANO ,  Tomonori WATANABE

IPC: H02H9/04 ,  H02M3/156 ,  H02M1/32

Abstract: A power supply circuit includes a transistor having a drain connected to an input voltage, a gate, and a source; a diode; a choke coil; a capacitor; a transformer; a control circuit that provides a drive signal for turning on and off the transistor to a primary winding of the transformer based on an output voltage; an overvoltage detection circuit that outputs an overvoltage signal when the output voltage is an overvoltage; and a short circuit that short-circuits the gate and the source of the transistor in response to the overvoltage signal.

公开(公告)号：US20190068065A1

公开(公告)日：2019-02-28

申请号：US15892369

申请日：2018-02-08

Applicant: OMRON Corporation

Inventor： Kohei TANINO ,  Shingo NAGAOKA ,  Mitsuru SATO ,  Masaaki NAGANO ,  Hiroyuki ONISHI

IPC: H02M3/335 ,  H02M1/40

Abstract: Provided is an LLC resonant converter capable of achieving high efficiency while preventing saturation of a transformer. The LLC resonant converter includes semiconductor switches connected in series between a positive electrode and a negative electrode of a power source, a transformer including a primary winding, a core, and a secondary winding, a capacitor connected between the negative electrode of the power source and a second end of the primary winding of the transformer, a capacitor, and semiconductor switches connected to each other in series and in parallel with the capacitor, and a secondary side circuit connected to the secondary winding of the transformer, wherein the transformer is a swing choke coil.