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公开(公告)号：US12068694B2
公开(公告)日：2024-08-20
申请号：US17703712
申请日：2022-03-24
发明人： Yuta Endo , Takato Sugawara
CPC分类号： H02M3/33571 , H02M1/08 , H02M1/4208
摘要： An integrated circuit for a power supply circuit that includes a transistor and generates an output voltage of a target level. The integrated circuit is configured to switch the transistor. The integrated circuit includes a first terminal configured to receive a feedback voltage according to the output voltage, a signal detection circuit configured to detect, through the first terminal, a setting signal received from an external circuit that operates based on the output voltage, and a driver circuit configured to drive the transistor in response to the setting signal detected by the signal detection circuit.
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公开(公告)号：US12068681B2
公开(公告)日：2024-08-20
申请号：US17885051
申请日：2022-08-10
发明人： Moonyoung Kim , Jeongil Kang
CPC分类号： H02M1/4208 , G09G1/005 , H02M1/0032 , G09G2330/021
摘要： A display device includes a diode bridge configured to rectify input power; a power factor correction (PFC) circuit configured to control a power factor of the input power rectified by the diode bridge; a direct current (DC)/DC converter configured to change voltage of the input power received through the PFC circuit; and a PFC controller connected to the diode bridge and configured to selectively turn on or off the PFC circuit based on terminal voltages of lower diodes included in the diode bridge.
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公开(公告)号：US20240275272A1
公开(公告)日：2024-08-15
申请号：US18169656
申请日：2023-02-15
发明人： Hyunchul EUM , Giyoung CHUN
IPC分类号： H02M1/42
CPC分类号： H02M1/4208
摘要： PFC converters. One example is a method of operating a power converter, the method comprising: charging a first-phase inductance of a first boost converter, and then discharging the first-phase inductance, the charging and discharging defines a first switching period of the first boost converter; asserting, during the first switching period, a sync-two signal based on a duration of a prior switching period of the first boost converter and an offset value; asserting, during the first switching period, a valley-two signal when current through a second-phase inductance of a second boost converter reaches a predetermined valley current; responsive to the assertion of the sync-two signal and the valley-two signal, charging the second-phase inductance, and then discharging the second-phase inductance; and responsive to relative timing of the assertion of the sync-two signal and assertion of the valley-two signal, modifying the offset value.
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公开(公告)号：US12051969B2
公开(公告)日：2024-07-30
申请号：US18302848
申请日：2023-04-19
发明人： Manish Bhardwaj
CPC分类号： H02M1/4208 , H02M1/4233 , H02M7/217
摘要： Example power factor correction circuits to correct the power factor of power converters are disclosed. An example power factor correction controller circuit includes a phase locked loop phase angle determiner to determine a first phase angle of an input voltage of the power converter and further includes a compensating current determiner to determine, based on the phase angle, a compensating current to compensate for a capacitive current introduced by at least one filter capacitor of the power converter. The power factor correction controller circuit further includes a switch controller to cause a controlled current drawn by a power stage of the power converter to be adjusted by the compensating current to reduce a phase offset between the first phase angle of the input voltage and a second phase angle of the input current drawn at an input of the power converter.
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公开(公告)号：US20240246427A1
公开(公告)日：2024-07-25
申请号：US18099453
申请日：2023-01-20
发明人： Young Jin JANG
CPC分类号： B60L50/51 , B60L53/24 , B60L55/00 , B60L2210/10 , H02M1/4208
摘要： An electrified vehicle includes a motor including windings, a power factor correction circuit including AC and DC terminals and including legs corresponding to respective AC terminals and connected between the DC terminals, and a DC/DC converter including a first switching circuit including first, second, and third primary legs connected between terminals of a battery, a second switching circuit including at least one secondary leg connected between the DC terminals, and a transformer connected between the first and second switching circuits. In a battery discharging mode, the DC/DC converter switches the first primary leg and the at least one secondary leg, outputting a voltage of the battery to the DC terminals via the transformer. When the motor may be driven, the DC/DC converter switches the second and third primary legs electrically disconnected from the transformer, outputting the voltage of the battery to the motor.
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公开(公告)号：US12021450B2
公开(公告)日：2024-06-25
申请号：US18086567
申请日：2022-12-21
发明人： Yingfeng Wang
CPC分类号： H02M1/4208 , H02M3/04
摘要： A power supply system for a toilet includes a controller power supply circuit, including an input end electrically connected to an external power supply and an output end. The system includes an assembly driving power supply circuit, including an input end electrically connected to the external power supply and an output end. The power supply system also includes a controller circuit, including a power supply end electrically connected to the output end of the controller power supply circuit and an output end communicably connected to a control end of a switch control circuit of the assembly driving power supply circuit. The system also includes a driving component circuit, including a power supply end electrically connected to the output end of the assembly driving power supply circuit. An output power of the controller power supply circuit is lower than an output power of the assembly driving power supply circuit.
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7.发明公开公开(公告)号：US20240178782A1
公开(公告)日：2024-05-30
申请号：US18523752
申请日：2023-11-29
CPC分类号： H02P27/06 , H02M1/4208
摘要： An electric motor is provided. The electric motor includes a motor controller configured to convert AC power to a variable frequency variable voltage power for driving the electric motor according to a commanded motor output. The motor controller includes a PFC circuit configured to control a power factor of the electric motor and a microcontroller coupled to the PFC circuit and configured to activate the PFC circuit when the commanded motor output is greater than a threshold motor output, deactivate the PFC circuit when the commanded motor output is less than or equal to the threshold motor output, and generate a control signal based on the commanded motor output. The motor controller further includes an inverter configured to receive the control signal and generate the variable frequency variable voltage power according to the commanded motor output.
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公开(公告)号：US11990835B2
公开(公告)日：2024-05-21
申请号：US17473202
申请日：2021-09-13
发明人： Dianbo Fu , Heping Dai
CPC分类号： H02M1/4216 , H02M1/4208 , H02M1/44 , H02M3/335 , H02M7/06 , H02M3/01 , H02M3/33573
摘要： A power conversion system includes a first rectifier and a second rectifier. The first rectifier is configured to operate at a first operating frequency. The first rectifier is configured to be connected with a three-phase power source. A first amount of power flows through the first rectifier from the three-phase power source. The second rectifier is configured to operate at a second operating frequency. The second rectifier is configured to be connected in parallel with the first rectifier, and a second amount of power flows through the second rectifier from the three-phase power source. The second operating frequency is higher than the first operating frequency, and the second amount of power is a fraction of the first amount of power.
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公开(公告)号：US20240136931A1
公开(公告)日：2024-04-25
申请号：US18521283
申请日：2023-11-28
IPC分类号： H02M3/158 , B60L53/22 , H02J7/00 , H02M1/14 , H02M7/217 , H02M7/219 , H02M7/23 , H02M7/797 , H02M7/81
CPC分类号： H02M3/1582 , B60L53/22 , H02J7/007 , H02M1/14 , H02M7/2173 , H02M7/219 , H02M7/23 , H02M7/797 , H02M7/81 , B60L2210/14 , H02M1/4208
摘要： The present invention generally relates to a modular high power bi-directional half bridge buck/boost converter assembly and, in particular, to a system for converting power from one form of current (either AC or DC) to a differing level of voltage, either lower (buck) or higher (boost), to output a wave signal based on pulse wave modulation (PWM) switching control by means of an external digital controller and methods of operation. In particular, an inverter-converter system includes at least one half bridge module including a plurality of circuit components, at least one inductor which is connected to the at least one half bridge module and a power supply, and a controller which is configured to receive and send instructions to the at least one half bridge module for converting an input voltage to an output voltage and dynamically tune switching frequencies based on a load of the inverter-converter system.
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公开(公告)号：US20240079951A1
公开(公告)日：2024-03-07
申请号：US18305248
申请日：2023-04-21
发明人： Xiucheng Huang , Mingqiang Li , Weijing Du , Yun Zhou
CPC分类号： H02M1/44 , H02M1/4208 , H02M3/33571 , H05K9/0075
摘要： Systems and methods for improving radiated electromagnetic interference (EMI) in switching power supplies are disclosed. In one aspect, a converter circuit includes a transformer having a primary winding and a secondary winding, the primary winding extending from a first primary terminal to a second primary terminal, a first switch having a first gate terminal, a first source terminal and a first drain terminal, wherein the first drain terminal is coupled to the first primary terminal, and the first source terminal is coupled to a power source, and a capacitor having a first capacitor terminal and second capacitor terminal, wherein the first capacitor terminal is coupled to the power source. A ferrite bead is coupled between the first primary terminal and the first drain terminal, and a capacitor network is coupled in parallel with the ferrite bead and arranged to reduce radiated electromagnetic interference of the converter circuit.
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