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公开(公告)号：US11715679B2
公开(公告)日：2023-08-01
申请号：US16597808
申请日：2019-10-09
IPC分类号： H01L23/538 , H01L23/495 , H01L25/065 , H02M3/156 , H01L25/07 , H01L25/16 , H01L21/48 , H01L23/48 , H02M1/00
CPC分类号： H01L23/49575 , H01L21/4885 , H01L23/481 , H01L23/5383 , H01L23/5384 , H01L23/5387 , H01L23/5389 , H01L25/0657 , H01L25/072 , H01L25/165 , H02M3/156 , H02M1/0012
摘要： A semiconductor package includes a substrate, a set of terminals protruding from a first surface of the substrate, a power stage physically and thermally coupled to the first surface of the substrate, and a flexible circuit including at least one circuit layer forming power stage conductors and control circuit conductors disposed on a flexible insulating substrate layer. The power stage is between the flexible circuit and the substrate and is mounted on a first surface of the flexible circuit such that the power stage is electrically connected to the power stage conductors. The package includes a die mounted on a second surface of the flexible circuit opposite the power stage. An output of the die is electrically connected to an input of the power stage via the control circuit conductors.
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公开(公告)号：US11711015B2
公开(公告)日：2023-07-25
申请号：US17546921
申请日：2021-12-09
发明人： Hui Li , Siran Wang
CPC分类号： H02M3/156 , H02M1/0009 , H02M1/0025
摘要： A controller of a switching converter includes an error amplifying circuit, a first comparison circuit, a valley detection circuit, a valley selection circuit and a frequency control circuit. The error amplifying circuit generates a compensation signal based on the difference between a reference signal and a feedback signal. The first comparison circuit compares the compensation signal with a modulation signal and generates a pulse frequency modulation signal. The valley detection circuit detects valleys of a resonant voltage of the switching converter and generates a valley pulse signal. The valley selection circuit generates a valley enable signal corresponding to a target valley number based on the pulse frequency modulation signal and the valley pulse signal. The frequency control circuit generates a frequency control signal to control the switching frequency of the first switch based on the valley enable signal and the valley pulse signal.
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公开(公告)号：US11705808B2
公开(公告)日：2023-07-18
申请号：US17490104
申请日：2021-09-30
发明人： Bosheng Sun
CPC分类号： H02M1/4225 , G01R19/02 , H02M7/2176 , H02M1/42 , H02M3/156 , H02M7/217
摘要： A control circuit for a power factor correction (PFC) circuit, the control circuit includes a multiplier having first, second, and third multiplier inputs and a multiplier output. The control circuit has an adder having first and second inputs and an output. The first input of the adder is coupled to the multiplier output. The control circuit further includes a root mean square (RMS) calculation circuit configured to determine a square of a root mean square of an input sinusoidal voltage. The RMS calculation circuit has an output coupled to the second multiplier input. An input voltage square calculation circuit is configured to determine a square of the input sinusoidal voltage. The input voltage square calculation circuit has an output coupled to the third multiplier input.
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公开(公告)号：US20230219436A1
公开(公告)日：2023-07-13
申请号：US18009363
申请日：2021-09-29
发明人： Mingwang ZHOU , Xuejing YANG , Shujiang CHEN , Gengnan ZHANG , Yipo HU
摘要： A DC converter, a controlling method, and a vehicle are provided. The DC converter includes: a first inductor, a switching unit, a diode, a first capacitor, a load resistor, a pre-charge control unit and a controller. The output terminal of the controller is connected with the control terminal of the switching unit and the control terminal of the pre-charge control unit. The controller is configured to control the switching unit to be turned on or turned off, and to control the resistor connected between the negative electrode of the diode and the first end of the load resistance in the pre-charge control unit when the switching unit is turned off, such that the direct current converter is pre-charged by the low-voltage power supply.
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公开(公告)号：US20230219430A1
公开(公告)日：2023-07-13
申请号：US18085499
申请日：2022-12-20
发明人： Shaodong WANG
CPC分类号： B60L50/60 , B60L3/0046 , H02M3/156 , H02M1/0009 , B60L2210/10
摘要： Embodiments of the present disclosure provide a power supply system. The power supply system comprises a first loop and a second loop. The first loop includes a DC-DC conversion module connected in parallel to a first load, and each first terminal of the DC-DC conversion module and the first load that are connected in parallel is grounded. The second loop includes a storage battery connected in parallel to a second load, and each first terminal of the storage battery and the second load that are connected in parallel is grounded. The power supply system further includes a switch unit. The switch unit includes a switch. The switch is coupled in series between a second terminal of each of the DC-DC conversion module and the first load that are connected in parallel and a second terminal of each of the storage battery and the second load that are connected in parallel. The switch is in an on-state by default, so that a vehicle is started by using the storage battery in the second loop.
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公开(公告)号：US20230213954A1
公开(公告)日：2023-07-06
申请号：US17567066
申请日：2021-12-31
发明人： Travis John Guthrie , Timothy William Nutt , Aaron Michael Shreeve , Narendra Babu Kayathi , Robert Thomas Grisamore , Kiran Gonsalves
CPC分类号： G05F1/575 , H02M3/156 , H02M1/0009
摘要： Methods and systems for operating a voltage regulator are described. An apparatus may receive a feedback signal from a power stage. The feedback signal may be one of a sensed signal measured from an output of the power stage and a calibration signal representing a fixed voltage. The apparatus may convert the feedback signal into a correction signal. The apparatus may further adjust a synthetic current using the correction signal, the synthetic current being associated with the power stage.
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公开(公告)号：US20230206020A1
公开(公告)日：2023-06-29
申请号：US18111014
申请日：2023-02-17
发明人： Kyeongdo KIM , Sanghyo LEE , Seungwon LEE , Jongpil CHO
IPC分类号： G06K19/077 , G06K19/07 , H02M1/08
CPC分类号： G06K19/07773 , G06K19/0715 , H02M1/08 , H02M3/156
摘要： A smart card includes an antenna to transmit and to receive a radio frequency signal, a rectifier to rectify a signal received through the antenna to output a rectified voltage, a voltage regulator to operate in a first operation mode for stabilizing a level of the rectified voltage and a second operation mode for generating an internal voltage using the rectified voltage, a regulator converter to control the voltage regulator to operate the voltage regulator in one of the first operation and the second operation according to a mode selection signal, a clamp circuit to connect an output terminal of the rectifier to a ground according to the mode selection signal, a load modulator to vary a resistance of the antenna to perform a load modulation, and a regulator controller to generate the mode selection signal according to whether the load modulator is activated or deactivated.
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公开(公告)号：US20230189405A1
公开(公告)日：2023-06-15
申请号：US18077704
申请日：2022-12-08
申请人： SABAF S.P.A.
CPC分类号： H05B6/062 , H05B6/1236 , H02M3/156
摘要： An induction cooktop includes: a first induction heater and a second induction heater; a control unit; a first switching current generator and a second switching current generator, operable by the control unit in subsequent control periods to energize the first induction heater and the second induction heater, respectively. The control unit configured to: operate both the first switching current generator and the second switching current generator with a first switching frequency in a first control interval of each control period; operate only the first switching current generator with at least two respective different switching frequencies in a second control interval and in a third control interval of each control period, while the second switching current generator is inactive; operate only the second switching current generator with at least two respective different switching frequencies in a fourth control interval and in a fifth control interval of each control period, while the first switching current generator is inactive.
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公开(公告)号：US11677318B2
公开(公告)日：2023-06-13
申请号：US17248087
申请日：2021-01-08
发明人： Gang Chen , Rong-Shyang Ou
CPC分类号： H02M3/156 , H02M1/0009 , H02M1/0054 , H02M3/1584 , Y02B70/10
摘要： A circuit for controlling a switching power supply includes a disable signal generator generating a disable signal in response to an input clock signal, a timer circuit generating a timeout signal in response to the disable signal, a comparison signal generator generating a comparison signal in response to an output signal of the power supply, a first threshold signal generator generating a first threshold signal in response to the comparison signal, the first threshold signal having a value greater than that of the comparison signal, and a first comparator comparing the first threshold signal and a sense signal to de-assert the modulation signal when the sense signal is equal to or greater than the first threshold signal and the timeout signal has a first logic value.
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公开(公告)号：US11652410B2
公开(公告)日：2023-05-16
申请号：US17024865
申请日：2020-09-18
发明人： Qian Fang , Cong Lan , Lieyi Fang
CPC分类号： H02M3/156 , H02M1/0009 , H02M3/335 , H02M3/33507 , H02M3/33515
摘要： Systems and methods are provided for regulating a power converter. An example system controller includes: a driver configured to output a drive signal to a switch to affect a current flowing through an inductive winding of a power converter, the drive signal being associated with a switching period including an on-time period and an off-time period. The switch is closed in response to the drive signal during the on-time period. The switch is opened in response to the drive signal during the off-time period. A duty cycle is equal to a duration of the on-time period divided by a duration of the switching period. One minus the duty cycle is equal to a parameter. The system controller is configured to keep a multiplication product of the duty cycle, the parameter and the duration of the on-time period approximately constant.
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