公开(公告)号：US20240204671A1

公开(公告)日：2024-06-20

申请号：US18590329

申请日：2024-02-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Pei-Hsin LIU ,  Richard Lee VALLEY ,  Bharath Balaji KANNAN

IPC: H02M3/335 ,  G06F1/26 ,  G06F13/42 ,  H02M1/00 ,  H02M1/08 ,  H05B45/37

CPC classification number: H02M3/33523 ,  G06F1/266 ,  G06F13/4282 ,  H02M1/08 ,  H05B45/37 ,  G06F2213/0042 ,  H02M1/0009 ,  H02M1/0032

Abstract: A circuit includes a transistor having a first current terminal, a second current terminal, and a control terminal; and a current sense circuit coupled to the second current terminal. The circuit also includes modulation circuitry coupled to the control terminal and to the current sense circuit and a mode controller coupled to the modulation circuitry.

公开(公告)号：US12015344B2

公开(公告)日：2024-06-18

申请号：US17766085

申请日：2020-09-30

Applicant: Raytheon Systems Limited

Inventor： Francis William Murphy

IPC: H02M3/157 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M3/157 ,  H02M1/0009 ,  H02M1/08

Abstract: A peak current mode ‘PCM’ controller comprising control logic arranged to produce a series of digital control values derived from a voltage sense signal, control logic arranged to produce a digital slope compensation value, a first digital to analogue converter ‘DAC’ arranged to receive the series of digital control values and output a corresponding analogue control voltage, a second DAC arranged to receive the digital slope compensation value and output a corresponding analogue slope compensation voltage, an analogue differential integrator arranged to receive the analogue control voltage and the analogue slope compensation voltage, integrate the analogue slope compensation voltage, subtract the integrated slope compensation voltage from the analogue control voltage, and output the result of the subtraction as an analogue output voltage, a comparator arranged to compare the analogue output voltage to a voltage of an analogue current sense signal and produce an output signal when the analogue current sense signal voltage is equal to or exceeds the analogue output voltage, and control logic arranged to produce a drive signal in response to the output signal.

公开(公告)号：US20240195283A1

公开(公告)日：2024-06-13

申请号：US18287940

申请日：2022-02-24

Applicant: HITACHI ASTEMO, LTD.

Inventor： Hiroshi SUZUKI ,  Shinichirou WADA ,  Masahiro DOI ,  Yoshiaki MIZUHASHI

IPC: H02M1/08 ,  H02M1/00 ,  H02M7/537 ,  H02P27/06 ,  H03K17/16

CPC classification number: H02M1/08 ,  H02M1/0054 ,  H02M7/537 ,  H03K17/161 ,  H02P27/06

Abstract: A drive device for a voltage-driven semiconductor switching element includes: a gate drive circuit configured to drive the semiconductor switching element; and a gate voltage hold circuit configured to hold a gate voltage applied to the semiconductor switching element at a predetermined hold voltage higher than a threshold voltage of the semiconductor switching element and lower than a Miller voltage of the semiconductor switching element. The gate voltage hold circuit starts an operation of holding the gate voltage at the hold voltage after a rise of a voltage between main terminals of the semiconductor switching element at a turn-off time of the semiconductor switching element and before a maximum value of the voltage between the main terminals.

公开(公告)号：US12000883B2

公开(公告)日：2024-06-04

申请号：US17606048

申请日：2019-06-25

Applicant: Mitsubishi Electric Corporation

Inventor： Yukihiko Wada

IPC: G01R31/26 ,  G01R31/28 ,  H01L23/00 ,  H01L23/495 ,  H01L29/739 ,  H02M1/08 ,  H02M7/5387 ,  H02P27/08

CPC classification number: G01R31/2608 ,  G01R31/2619 ,  G01R31/2642 ,  G01R31/2853 ,  H01L23/49562 ,  H01L24/48 ,  H01L29/7393 ,  H02M1/08 ,  H02M7/53871 ,  H01L2224/48175 ,  H02P27/08

Abstract: A deteriorated section identifying unit refers to correspondence information that defines a deteriorated section of a plurality of bonding sections to the emitter electrode surface to which the first bonding wires are connected, for a combination of temporal change of a first voltage that is a difference between a potential at a collector main terminal and a potential at the emitter main terminal and temporal change of a second voltage that is a difference between a potential at the emitter reference terminal and a potential at the emitter main terminal, and identifies the deteriorated section corresponding to a combination of temporal change of the first voltage measured by a first voltage measuring circuit and temporal change of the second voltage measured by a second voltage measuring circuit.

公开(公告)号：US11996761B2

公开(公告)日：2024-05-28

申请号：US17591336

申请日：2022-02-02

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tadao Yamaguchi ,  Masahito Sonehara

IPC: H02M3/158 ,  G01R19/25 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M1/0009 ,  G01R19/25 ,  H02M1/08 ,  H02M3/158

Abstract: A current detection circuit includes: a detection resistor provided between an output of a driver circuit and a load; a power supply circuit configured to operate between a first power supply and a virtual ground potential, and generate a second power supply having a predetermined voltage difference from the virtual ground potential; and a signal processing circuit configured to operate between the second power supply and the virtual ground potential, and generate a detection signal corresponding to a voltage generated at the detection resistor. A virtual ground line for supplying the virtual ground potential is connected between the output of the driver circuit and the detection resistor.

公开(公告)号：US20240171082A1

公开(公告)日：2024-05-23

申请号：US18076738

申请日：2022-12-07

Applicant: MEAN WELL Enterprises Co., Ltd. ,  MEAN WELL (GuangZhou) Electronics Co., Ltd. ,  SUZHOU MEAN WELL TECHNOLOGY CO., LTD.

Inventor： Fanyi YANG

IPC: H02M3/335 ,  H02J3/10 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M3/33573 ,  H02J3/10 ,  H02M1/0043 ,  H02M1/08

Abstract: An energy-recycling device and a DC voltage-boosting device thereof is disclosed. The DC voltage-boosting device includes a first phase controller, an interleaved voltage booster, a second phase controller, and a phase-shift voltage converter. The first phase controller generates a first PWM signal and a second PWM signal. The interleaved voltage booster receives an input DC voltage, the first PWM signal and the second PWM signal and increases the input DC voltage to a supplying DC voltage. The second phase controller receives the supplying DC voltage and a setting voltage, thereby generating third PWM signals. The phase-shift voltage converter receives the third PWM signals and the supplying DC voltage and converts the supplying DC voltage into a stable DC voltage.

公开(公告)号：US20240154538A1

公开(公告)日：2024-05-09

申请号：US18550686

申请日：2022-07-07

Applicant: POWER LSI CO.,LTD.

Inventor： Won Tae LEE ,  Won Ji LEE ,  Chuen Sik JUNG ,  Gyu Won LEE

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/32 ,  H02M3/00

CPC classification number: H02M3/33592 ,  H02M1/08 ,  H02M1/32 ,  H02M3/01 ,  H02M3/33571 ,  H02M1/4208

Abstract: According to an embodiment of the present disclosure, a resonant convertor for a power supply device may comprise a synchronous rectifier comprising at least one MOSFET to convert an alternating current into a direct current; a circuit isolation device to receive a state signal from a component included in a first circuit module and to generate a first synchronous rectifier control signal based on the received state signal; a load state detection module to detect a state of a load stage included in a second circuit side and to generate a second synchronous rectifier control signal based on the detected state; and a synchronous rectifier control module to receive the first and the second synchronous rectifier control signals and to control the synchronous rectifier based on at least one of the first and the second synchronous rectifier control signals.

公开(公告)号：US20240154518A1

公开(公告)日：2024-05-09

申请号：US18471765

申请日：2023-09-21

Applicant: SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD.

Inventor： Rulong JIANG ,  Zhen ZHU ,  Xiaoru GAO ,  Zongyuan HE ,  Yanlei WEI ,  Shuaimin YAN ,  Yuqi PENG

IPC: H02M1/08 ,  H02M1/00 ,  H02M7/217

CPC classification number: H02M1/08 ,  H02M1/0003 ,  H02M7/217

Abstract: A control method and control circuit for a switched-mode power supply (SMPS) and a control chip are disclosed. The SMPS is switched between different operating modes based on different levels of its output voltage. When the output voltage is lower than a first reference and the difference between it and the first reference exceeds a threshold, an operating frequency of a power transistor and output voltage are controlled to satisfy a proportional relationship defined by an associated slope. When the output voltage is lower than the first reference and the difference between it and the first reference is below the threshold, the power transistor is controlled to operate at a fixed frequency. When the output voltage is higher than the first reference, the power transistor is controlled to operate at a variable frequency.

公开(公告)号：US11979092B2

公开(公告)日：2024-05-07

申请号：US17904341

申请日：2020-06-05

Applicant: WEG DRIVES & CONTROLS AUTOMACAO LTDA

Inventor： Adriano Da Silva Dias ,  Marcio Sari

IPC: H02M5/458 ,  H02M1/00 ,  H02M1/08 ,  H02P27/06

CPC classification number: H02M5/458 ,  H02M1/0009 ,  H02M1/08 ,  H02P27/06

Abstract: A system for limiting charging current of capacitive filters of power cells of a cascaded modular power converter during the start-up period where a low-voltage power source is used, supplying a controlled power switching arrangement controlled by the general controller of the cascaded modular power converter, making it possible to limit the charging current of the capacitors of the power cells during the start-up period of the cascaded modular converter. The controlled power switching arrangement communicates with the general controller of the cascaded modular power converter over a communication channel. The communication means send the commands to start or end the start-up process of the cascaded modular converter.

公开(公告)号：US11979082B2

公开(公告)日：2024-05-07

申请号：US17708045

申请日：2022-03-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Connie Jiang

IPC: H02M1/08 ,  H02M3/155

CPC classification number: H02M1/08 ,  H02M3/155

Abstract: One example includes a power supply system. The system includes a power switch configured to activate via a control voltage responsive to a first state of an activation signal to conduct current from a power rail to a switching terminal. The system further includes a power switch deactivation driver configured to control an amplitude of the control voltage responsive to a second state of the activation signal based on a voltage difference between the power rail and the switching terminal to provide for a variable rate of deactivation of the power switch.