公开(公告)号：US20240364229A1

公开(公告)日：2024-10-31

申请号：US18580783

申请日：2022-05-10

Applicant: Hitachi Power Semiconductor Device, Ltd.

Inventor： Yoshihiro MIWA ,  Hiroyuki SHOJI ,  Junichi SAKANO ,  Tomoyuki UTSUMI ,  Takahiro HIGUCHI

IPC: H02M7/217 ,  H02M1/08 ,  H02M3/335

CPC classification number: H02M7/217 ,  H02M1/08 ,  H02M3/33573

Abstract: An effective technique is applied to a rectifier circuit that performs synchronous rectification using a switching element. The rectifier circuit performs the synchronous rectification using a MOSFET, for example, as the switching element. By using the rectifier circuit, a capacitance of a capacitor for supplying power to a drive circuit can be reduced. As a result, downsizing and cost reduction of the rectifier circuit and the power supply using the rectifier circuit can be achieved.

公开(公告)号：US20240364207A1

公开(公告)日：2024-10-31

申请号：US18308151

申请日：2023-04-27

Applicant: Infineon Technologies AG

Inventor： Marco Flaibani ,  Stefano Zampieri ,  Giovanni Bisson

IPC: H02M1/08 ,  H02M3/157 ,  H02M3/158 ,  H03K5/24

CPC classification number: H02M1/08 ,  H02M3/157 ,  H02M3/158 ,  H03K5/24

Abstract: A circuit includes a switching signal generator and synchronization circuitry configured to determine a first time of a switching period based on a switching signal. The circuit further includes a comparison signal generator configured to generate a comparison signal with a first constant rate of change after the first time. The synchronization circuitry is further configured to determine a second time of the switching period based on when current at the inductive element changes from a positive current to a negative current. The comparison signal generator is further configured to generate the comparison signal with a second constant rate of change after the second time. The circuit further includes a threshold detector configured to compare a value of the comparison signal at the end of a target switching period with a threshold value.

公开(公告)号：US12132390B2

公开(公告)日：2024-10-29

申请号：US17951165

申请日：2022-09-23

Applicant: SANYO Electric Co., Ltd.

Inventor： Osamu Ohashi

IPC: H02M1/08 ,  H02M3/156

CPC classification number: H02M1/08 ,  H02M3/156

Abstract: An electronic circuit unit includes a trigger circuit and a circuit module. The trigger circuit includes a semiconductor switching element configured to output a switching pulse signal in response to an external trigger signal, a load resistor for the semiconductor switching element, a one-shot pulse circuit configured to convert the switching pulse signal into a one-shot pulse with a predetermined pulse width, and a forcible-reset circuit connected to an input side of the semiconductor switching element. The one-shot pulse circuit includes a coupling capacitor connected to an input side of the semiconductor switching element and a charging resistor for the coupling capacitor. The pulse width of the one-shot pulse is determined by a time constant of the coupling capacitor and the charging resistor. The forcible-reset circuit is configured to temporarily input an on-voltage to the semiconductor switching element so as to forcibly switch the circuit module to the operating mode.

公开(公告)号：US12126265B2

公开(公告)日：2024-10-22

申请号：US17959611

申请日：2022-10-04

Applicant: National Formosa University

Inventor： Yu-Kai Chen ,  Chau-Chung Song ,  Hung-Yu Chen

IPC: H02M3/335 ,  A01G7/04 ,  A01M7/00 ,  B05B5/10 ,  B64C39/02 ,  H02M1/08 ,  B64D1/18 ,  B64U101/00

CPC classification number: H02M3/33569 ,  A01G7/04 ,  A01M7/0042 ,  B05B5/10 ,  B64C39/024 ,  H02M1/08 ,  B64D1/18 ,  B64U2101/00

Abstract: A switch mode power supply circuit with high voltage output, an electrostatic spray apparatus and agricultural plant protection apparatus using the same are provided. The switch mode power supply circuit is electrically connected in series with at least a pre-stage power converter and a post-stage power converter. In order to simplify the control, the switch of the pre-stage power converter is omitted, only one switch of the post-stage power converter is adopted to perform synchronous control. Since the multiple sets of power conversion circuits in the previous stage are connected in series, the turn ratio of the transformer in the power converter in the subsequent stage can be reduced. Therefore, the transformer can be miniaturized and the power supply circuit would be more suitable for agricultural plant protection machine and electrostatic spray apparatus.

公开(公告)号：US20240348243A1

公开(公告)日：2024-10-17

申请号：US18301952

申请日：2023-04-17

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Karel PTACEK ,  Jaroslav KNOP

IPC: H03K17/082 ,  H02M1/08 ,  H02M7/537

CPC classification number: H03K17/0822 ,  H02M1/08 ,  H02M7/537 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: Operating a gate driver. At least one example is a method of operating the gate driver, the method comprising: de-asserting a drive-low terminal of the gate driver; starting a single timer within the gate driver; and after expiration of the single timer asserting a drive-high terminal of the gate driver responsive to assertion of an in-high terminal of the gate driver; and then de-asserting the drive-high terminal; starting the single timer; and after a second expiration of the single timer asserting the drive-low terminal responsive to assertion of an in-low terminal of the gate driver.

公开(公告)号：US20240348080A1

公开(公告)日：2024-10-17

申请号：US18300543

申请日：2023-04-14

Applicant: Delphi Technologies IP Limited

Inventor： Sunil Sreedhar ,  Alexandre M. S. Reis ,  Sean Daniel Harrison-Nayes

IPC: H02J7/02 ,  B60L53/30 ,  B60L53/60 ,  H02J7/34 ,  H02M1/08 ,  H02M1/42

CPC classification number: H02J7/02 ,  B60L53/30 ,  B60L53/60 ,  H02J7/345 ,  H02M1/08 ,  H02M1/4208 ,  B60L2210/30

Abstract: A system includes: a battery charger to convert AC power to DC power to charge a battery, wherein the battery charger includes: an upper switch to condition an input voltage and input current; a lower switch to condition the input voltage and the input current: an upper silicon controlled rectifier (SCR); a lower SCR; and a bulk capacitor.

公开(公告)号：US12107514B2

公开(公告)日：2024-10-01

申请号：US17427995

申请日：2019-10-10

Applicant: TMEIC Corporation

Inventor： Ryota Okuyama ,  Hiroki Ishitobi ,  Takashi Sugiyama

IPC: H02M7/483 ,  H02M1/08 ,  H02M1/42

CPC classification number: H02M7/4835 ,  H02M1/08 ,  H02M1/4216

Abstract: A power conversion device includes: a first control unit and a second control unit that output a first control signal and a second control signal, respectively; a gate circuit that causes a control signal selected from the first control signal and the second control signal to pass through the gate circuit; and a drive circuit that drives a main circuit based on the control signal that passes through the gate circuit. When the second control signal is selected in the state where the first control signal passes through the gate circuit, the gate circuit interrupts the first control signal and causes the second control signal to pass through the gate circuit as an absolute value of an instantaneous value of an AC current decreases below a threshold current.

公开(公告)号：US12107501B2

公开(公告)日：2024-10-01

申请号：US17877721

申请日：2022-07-29

Applicant: Silicon Laboratories Inc.

Inventor： Srikanth Govindarajulu

IPC: H02M3/157 ,  H02M1/08 ,  H02M1/36 ,  H02M3/158

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M1/36 ,  H02M3/157

Abstract: A method for operating a switched-mode power converter includes providing to a maximum voltage node as a maximum voltage, a version of the higher of a first voltage on a first node and a second voltage on a second node. The method includes generating a first signal indicating whether to operate the switched-mode power converter in a buck mode of operation or a boost mode of operation based on the first voltage and a first voltage domain based on the maximum voltage. The method includes generating a second signal indicating whether to operate the switched-mode power converter in a buck mode of operation or a boost mode of operation based on the first voltage and a second voltage domain of the first voltage. The method includes combining the first signal and the second signal to generate a digital configuration indicator signal.

公开(公告)号：US12103406B2

公开(公告)日：2024-10-01

申请号：US18161974

申请日：2023-01-31

Applicant: Delphi Technologies IP Limited

Inventor： Mark Wendell Gose ,  Seyed R. Zarabadi ,  David Paul Buehler ,  Kevin M. Gertiser

IPC: B60L50/51 ,  B60L3/00 ,  B60L15/00 ,  B60L15/08 ,  B60L50/40 ,  B60L50/60 ,  B60L50/64 ,  B60L53/20 ,  B60L53/22 ,  B60L53/62 ,  B60R16/02 ,  G01R15/20 ,  G06F1/08 ,  G06F13/40 ,  H01L21/48 ,  H01L23/00 ,  H01L23/15 ,  H01L23/367 ,  H01L23/373 ,  H01L23/40 ,  H01L23/467 ,  H01L23/473 ,  H01L23/495 ,  H01L23/538 ,  H01L25/00 ,  H01L25/07 ,  H01L29/66 ,  H02J7/00 ,  H02M1/00 ,  H02M1/08 ,  H02M1/084 ,  H02M1/088 ,  H02M1/12 ,  H02M1/32 ,  H02M1/42 ,  H02M1/44 ,  H02M3/335 ,  H02M7/00 ,  H02M7/537 ,  H02M7/5387 ,  H02M7/5395 ,  H02P27/06 ,  H02P27/08 ,  H02P29/024 ,  H02P29/68 ,  H05K1/14 ,  H05K1/18 ,  H05K5/02 ,  H05K7/20 ,  B60L15/20 ,  H03K19/20

CPC classification number: B60L50/60 ,  B60L3/003 ,  B60L15/007 ,  B60L15/08 ,  B60L50/40 ,  B60L50/51 ,  B60L50/64 ,  B60L53/20 ,  B60L53/22 ,  B60L53/62 ,  B60R16/02 ,  G01R15/20 ,  G06F1/08 ,  G06F13/4004 ,  H01L21/4882 ,  H01L23/15 ,  H01L23/3672 ,  H01L23/3675 ,  H01L23/3735 ,  H01L23/4006 ,  H01L23/467 ,  H01L23/473 ,  H01L23/49562 ,  H01L23/5383 ,  H01L24/32 ,  H01L24/33 ,  H01L25/072 ,  H01L25/50 ,  H01L29/66553 ,  H02J7/0063 ,  H02M1/0009 ,  H02M1/0054 ,  H02M1/08 ,  H02M1/084 ,  H02M1/088 ,  H02M1/123 ,  H02M1/32 ,  H02M1/322 ,  H02M1/327 ,  H02M1/4258 ,  H02M1/44 ,  H02M3/33523 ,  H02M7/003 ,  H02M7/537 ,  H02M7/5387 ,  H02M7/53871 ,  H02M7/53875 ,  H02M7/5395 ,  H02P27/06 ,  H02P27/08 ,  H02P27/085 ,  H02P29/024 ,  H02P29/027 ,  H02P29/68 ,  H05K1/145 ,  H05K1/181 ,  H05K1/182 ,  H05K5/0247 ,  H05K7/20154 ,  H05K7/2049 ,  H05K7/20854 ,  H05K7/209 ,  H05K7/20927 ,  B60L15/20 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2210/42 ,  B60L2210/44 ,  B60L2240/36 ,  G06F2213/40 ,  H01L2023/405 ,  H01L2023/4087 ,  H01L2224/32225 ,  H01L2224/32245 ,  H01L2224/33181 ,  H02J2207/20 ,  H02P2207/05 ,  H03K19/20 ,  H05K2201/042 ,  H05K2201/10166

Abstract: A system includes: an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a first power module including: a first connection; a second connection; a first power switch including a first gate terminal, the first power switch configured to control a first flow of current between the first connection and the second connection based on a first signal to the first gate terminal; and a first point-of-use controller configured to provide the first signal to the first gate terminal to control the first power switch.

公开(公告)号：US20240322696A1

公开(公告)日：2024-09-26

申请号：US18187269

申请日：2023-03-21

Applicant: SENSATA TECHNOLOGIES, INC.

Inventor： THOMAS GERJEN HENDRIK KOUWEN ,  JONATHAN M. JODOIN

IPC: H02M3/335 ,  B60L53/20 ,  B60L58/12 ,  H02J7/34 ,  H02M1/08

CPC classification number: H02M3/33569 ,  B60L53/20 ,  B60L58/12 ,  H02J7/345 ,  H02M1/08 ,  B60L2210/10 ,  H02J2207/20

Abstract: In an embodiment, a power supply system having an isolated solid-state active precharger includes a high voltage battery; a capacitive circuit; and a pre-charging circuit configured to charge the capacitive circuit from the high voltage battery, the pre-charging circuit including a flyback transformer and having a primary side and a secondary side corresponding to a primary coil and a secondary coil of the flyback transformer, wherein the high voltage battery is connected to the primary side, wherein the capacitive circuit is coupled to the secondary side, and wherein charge is fed back to the high voltage battery when an output voltage of the secondary side is substantially equal to or greater than a charge in the high voltage battery.