Patents Assigned to Silergy Semiconductor Technology (Hangzhou) Ltd.
  • Semiconductor structure and manufacture method thereof
    Patent number: 11251130
    Abstract: A method of making a semiconductor structure can include: (i) forming a plurality of oxide layers on a semiconductor substrate; (ii) forming a plurality of conductor layers on the plurality of oxide layers; (iii) forming plurality of thickening layers on the plurality of conductor layers; (iv) patterning the plurality of conductor layers and the plurality of thickening layers to form a hard mask; and (v) implanting ion using the hard mask to form a plurality of doped regions.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: February 15, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Chuan Peng
  • Voltage regulation circuit of single inductor and multiple outputs and control method
    Patent number: 11251700
    Abstract: A voltage regulation circuit can include: a power stage circuit with a single inductor and a plurality of output circuits; each output circuit having an output control switch configured to control a duration of an on time of the output circuit, and an output switch control circuit configured to control the output control switch in accordance with an output voltage sampling signal, a reference current signal that represents an output current of the output circuit, and a clock signal, in order to maintain an output voltage of the output circuit as constant and to decrease interference from load variations of any other of the plurality of output circuits; and where the output control switches are controlled to be on in sequence in each switching period.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: February 15, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Kailang Hang, Liangwei Sun
  • Alternating current-direct current conversion circuit, alternating current-direct current conversion method and charger
    Patent number: 11245338
    Abstract: An AC-DC conversion circuit can include an adaptive rectifier configured to receive an AC input voltage with different ranges, where operation states of the adaptive rectifier are adjusted according to a range of the AC input voltage, in order to decrease a fluctuation range of a DC output voltage of the adaptive rectifier.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 8, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jian Deng, Qiukai Huang
  • Power receiving antenna configured in a wearable electronic device
    Patent number: 11245286
    Abstract: A power receiving device of a contactless power supply configured in a wearable electronic device having a main body coupled to a wearing member, can include: a power receiving antenna including one or more coils at least partially disposed on the wearing member; and where wires of the receiving coils extend substantially along a surface of a wearing member to form a coil turn that crosses through the surface of the wearing member or a surface of the main body in an axial direction.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: February 8, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Chen Zhao, Wang Zhang
  • Chip package structure and method for forming chip package
    Patent number: 11232999
    Abstract: The present disclosure relates to a chip package structure and a method for forming a chip package. A package unit is formed from the chip and an encapsulant surrounding the chip to have an increased area. A redistribution layer is formed on the package unit to draw out to and redistribute input/output terminals on a surface of the chip. The redistribution layer is then electrically coupled to a leadframe or a printed circuit board by external and electrical connectors. The method and the package structure are suitable for providing a chip package having input/output terminals with high density, reducing package cost, and improving package reliability.
    Type: Grant
    Filed: February 16, 2020
    Date of Patent: January 25, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Jiaming Ye
  • Integrator And Analog-To-Digital Converter
    Publication number: 20220021395
    Abstract: An integrator and an analog-to-digital converter are provided. The analog-to-digital converter includes the integrator, a comparison circuit and a control logic circuit. The integrator includes an operational amplifier, offset capacitors, input capacitors, integral capacitors and controllable switches. The input capacitors and the integral capacitors are connected to the operational amplifier via controllable switches, so that the integrator operates in various operation modes. Operation states of the offset capacitors in a first phase and a second phase of an operation cycle are controlled by switching on or off the controllable switches. Therefore, an offset voltage of the integrator is eliminated, and conversion efficiency and conversion accuracy of the analog-to-digital converter is improved.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 20, 2022
    Applicant: SILERGY SEMICONDUCTOR TECHNOLOGY (HANGZHOU) LTD
    Inventors: Ying HUANG, Di GAO, Kun LI, Jinyu QIN
  • Power factor correction circuit, control method and controller
    Patent number: 11226648
    Abstract: A power factor correction circuit includes a power meter configured to measure a total harmonic distortion (THD) at an input port; a switching-type regulator that is controllable by a switch control signal in order to adjust a power factor; and a controller configured to generate the switch control signal to control the switching-type regulator to perform power factor correction, where the controller adjusts an on-time of a main switch of the switching-type regulator based on the measured THD to decrease the THD.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: January 18, 2022
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Zhaofeng Wang, Xiaodong Huang, Chen Zhao
  • Current detection circuit and power converter
    Patent number: 11209464
    Abstract: A current detection circuit can include: a detection power switch coupled to a power switch to be detected; a current control circuit configured to control voltages of power terminals of the detection power switch in order to generate a detection current flowing through the detection power switch when the power switch is on; and where a flowing direction of the detection current is consistent with a flowing direction of a current flowing through the power switch.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: December 28, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Kaiwei Yao
  • Apparatus and method for detecting object features
    Patent number: 11209468
    Abstract: An apparatus for detecting object features can include: a probe signal transmitter configured to load a digital intermediate frequency signal onto a carrier signal, and to transmit a loaded signal outwards; an echo signal receiver configured to receive an echo signal, and to extract an object feature signal by performing respective down conversions on a quadrature signal of the carrier signal and a quadrature signal of the digital intermediate frequency signal; and a signal processor configured to identify object features according to the object feature signal.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: December 28, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Junjie Qiao, Yanji Chen
  • AC-DC power converter
    Patent number: 11205966
    Abstract: An AC-DC power converter can include: a front-stage power circuit; a rear-stage power circuit configured to share one power switch as a main power switch with the front-stage power circuit, where the rear-stage power circuit is coupled to a load, and a first magnetic component of the front-stage power circuit and a second magnetic component of the rear-stage power circuit are not in one conductive loop from a positive terminal of a DC input voltage to a negative terminal of the DC input voltage; and an energy storage capacitor coupled to the front-stage power circuit and the rear-stage power circuit, where energy is transferred to the energy storage capacitor and the load when the first magnetic component is discharged.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: December 21, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Qiukai Huang, Jian Deng
  • Multi-input single-output DC-DC converter, control circuit and control method thereof
    Patent number: 11205947
    Abstract: A multi-input single-output DC-DC converter can include: a plurality of input circuits and an output circuit, where each input circuit includes a first switch, and one terminal of each of the input circuits is coupled to an input source, and the other terminal of the input circuit is coupled to the output circuit; and a control circuit configured to control operation periods of each input circuit in one switching period, in order to achieve power distribution and reach requirements for input currents of the input circuit and an output signal of the output circuit.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: December 21, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Wei Chen, Liangwei Sun
  • Isolated switching converter, control circuit and control method thereof
    Patent number: 11190095
    Abstract: A method of controlling an isolated switching converter having an output voltage that is adjustable, can include: generating an output voltage setting signal characterizing an expected output voltage of a load; increasing a time period when an output voltage reference signal changes from a current value to the output voltage setting signal; and making overvoltage protection not trigger due to a change of the output setting signal.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: November 30, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Xiaoyu Yang, Yongjiang Bai, Qiukai Huang
  • Switching circuit, synchronous rectification control circuit and control method thereof
    Patent number: 11190108
    Abstract: A synchronous rectification control circuit for controlling a switching circuit comprising a synchronous rectifier switch, can include: a drive circuit configured to generate a drive signal to control switching states of the synchronous rectifier switch; and a voltage regulation circuit configured to control the drive circuit to adjust an amplitude of the drive signal to decrease to a preset threshold in an adjustment state when a drain-source voltage of the synchronous rectifier switch is greater than an adjustment threshold before the synchronous rectifier switch is turned off, where a time that the voltage regulation circuit is in the adjustment state is an adjustment time.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 30, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Qiao Zhang, Xinlei Li
  • Sensing system, electronic device and sensing method for sensing ambient light
    Patent number: 11187577
    Abstract: A method of sensing ambient light intensity of an ambient in which an electronic device is located, can include: providing a plurality of light sensing elements under a display screen of the electronic device; displaying a solid color image during an operating period of the display screen; obtaining first data of each of the plurality of light sensing elements in response to a current ambient light during the display screen displaying the solid color image; obtaining second data of each of the plurality of light sensing elements in response to the current ambient light during the display screen displaying a normal image; and performing mathematical operations on the first data and the second data to obtain an intensity value of the ambient light of the ambient in which the electronic device is located.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: November 30, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Suyi Lin
  • Series resonant converter, primary feedback control circuit and control method thereof
    Patent number: 11172554
    Abstract: A primary feedback control circuit of a series resonant converter having a transformer, can include: an excitation current simulation circuit configured to sample an excitation voltage of the transformer, and to generate a first voltage representing an excitation current of the transformer; and a feedback control circuit configured to control on and off states of power switches of the series resonant converter in accordance with the first voltage and a second voltage representing a resonant current of the series resonant converter, where the first voltage is controlled to be equal to the second voltage when a secondary current of the transformer is zero.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 9, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Jian Deng, Chen Zhao
  • Resonant contactless power supply equipment, electrical transmitter and contactless power supply method
    Patent number: 11159051
    Abstract: A resonant contactless electric energy transmitter configured to contactlessly supply electric energy to an electric energy receiver, can include: (i) a high frequency power supply configured to generate a high frequency AC power with a frequency that is the same as a leakage inductance resonant frequency, where the leakage resonant frequency is obtained by detection of an output current of the high frequency power supply that corresponds to the high frequency AC power of a sequence of different frequencies during a frequency sweeping time period; and (ii) a transmitting resonant circuit comprising a transmitting coil, and being configured to receive the high frequency AC power from the high frequency power supply.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: October 26, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Feng Yu, Wang Zhang
  • Data forwarding method and node device for mesh network
    Patent number: 11146483
    Abstract: The disclosure relates to a data forwarding method and a node device for a mesh network. The mesh network comprises a plurality of nodes. At least one of the plurality of nodes is a relay node which forwards a data packet from a source node to a destination node. The method includes determining whether or not to forward the data packet in accordance with a type and a forwarding count value of the data package. The forwarding count value is changed in different manners in accordance with the type of the data packet when the data packet is forwarded. The data forwarding method decreases forwarding times of the data packets, reduces power consumption and increases efficiency of network communication.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 12, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Junjie Qiao
  • Switching converter, control circuit and control method thereof
    Patent number: 11147132
    Abstract: A method of controlling a switching converter having a plurality of interleaved parallel branches, can include controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter. A control circuit for a switching converter with a plurality of interleaved parallel branches, can control conduction phases of power switches of the interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 12, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Fusong Huang, Kailang Hang
  • Control method and control circuit for switch in switching power supply
    Patent number: 11146162
    Abstract: A control circuit for driving a power switch in a switching power supply can include: a start-up transistor having a drain coupled to a drain of the power switch, and a source coupled to a drain voltage detecting circuit; a gate voltage detecting circuit configured to detect a gate voltage of the power switch, to compare the gate voltage against a first threshold voltage, and to change an on drive current and an off drive current in response thereto; and the drain voltage detecting circuit being configured to detect a drain voltage of the power switch, to compare the drain voltage against a second threshold voltage, and to change the on drive current and the off drive current in response thereto.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: October 12, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Shaobin Zhang, Le Li, Zhiliang Hu, Yongjiang Bai
  • Power transmitting antenna and power transmitting device applying the same
    Patent number: 11139689
    Abstract: A power transmitting device for a contactless power supply, can include: a power transmitting antenna having a plurality of transmitting coils; where each of the plurality of transmitting coils comprises a coil turn or a plurality of concentric coil turns with a substantially coplanar setting and having a coil surface; where an axis of each of the plurality of transmitting coils is axially perpendicular to the power transmitting antenna; and where the axis of each of the plurality of transmitting coils forms a predetermined angle with respect to each other.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 5, 2021
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Chen Zhao, Tong Sun, Wang Zhang