Patents by Inventor Feng-Jung Huang
Feng-Jung Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11606038Abstract: A power converter and control circuit are provided. The control circuit has a power controller for turning on the power switch to maintain a desired output voltage and mode selection switch provides a mode selection signal. Depending on the magnitude of an input voltage of the power converter, in which the mode selection circuit compares the input voltage of the power converter with a reference voltage, a modulation controller is configured to turn on a modulation switch to activate the capacitor according to the mode selection signal.Type: GrantFiled: March 8, 2022Date of Patent: March 14, 2023Assignee: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo, Hao-Ming Chen
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Patent number: 11575316Abstract: A power converter includes a power switch controlling current flow in the power converter and a variable capacitance coupled in parallel to the power switch. The variable capacitance is configured to add a frequency jitter to the power converter.Type: GrantFiled: November 1, 2021Date of Patent: February 7, 2023Assignee: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo
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Publication number: 20220376627Abstract: A power converter and control circuit are provided. The control circuit has a power controller for turning on the power switch to maintain a desired output voltage and mode selection switch provides a mode selection signal. Depending on the magnitude of an input voltage of the power converter, in which the mode selection circuit compares the input voltage of the power converter with a reference voltage, a modulation controller is configured to turn on a modulation switch to activate the capacitor according to the mode selection signal.Type: ApplicationFiled: March 8, 2022Publication date: November 24, 2022Applicant: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo, Hao-Ming Chen
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Patent number: 11336190Abstract: A method for controlling a power converter includes turning on a power switch to maintain a desired output voltage, wherein the power switch is coupled to a primary winding to control a primary current flow and the output voltage is provided by a secondary winding. The method also includes adding a capacitance in parallel to the power switch at a time determined by a magnitude of an input voltage to the power converter. Here, the timing of adding the capacitance depends on the operation mode of the power controller. In a low input voltage mode, the capacitance is added in a demagnetization-time during which the secondary winding discharges. In a high input voltage mode, the capacitance is added in a discontinuous time.Type: GrantFiled: February 9, 2021Date of Patent: May 17, 2022Assignee: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo, Hao-Ming Chen
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Publication number: 20220085715Abstract: A power converter includes a power switch controlling current flow in the power converter and a variable capacitance coupled in parallel to the power switch. The variable capacitance is configured to add a frequency jitter to the power converter.Type: ApplicationFiled: November 1, 2021Publication date: March 17, 2022Applicant: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo
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Patent number: 11228240Abstract: A power converter includes a power switch controlling current flow in the power converter and a variable capacitance coupled in parallel to the power switch. The variable capacitance is configured to add a frequency jitter to the power converter.Type: GrantFiled: October 8, 2020Date of Patent: January 18, 2022Assignee: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo
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Publication number: 20210242789Abstract: A method for controlling a power converter includes turning on a power switch to maintain a desired output voltage, wherein the power switch is coupled to a primary winding to control a primary current flow and the output voltage is provided by a secondary winding. The method also includes adding a capacitance in parallel to the power switch at a time determined by a magnitude of an input voltage to the power converter. Here, the timing of adding the capacitance depends on the operation mode of the power controller. In a low input voltage mode, the capacitance is added in a demagnetization-time during which the secondary winding discharges. In a high input voltage mode, the capacitance is added in a discontinuous time.Type: ApplicationFiled: February 9, 2021Publication date: August 5, 2021Applicant: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo, Hao-Ming Chen
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Publication number: 20210028695Abstract: A power converter includes a power switch controlling current flow in the power converter and a variable capacitance coupled in parallel to the power switch. The variable capacitance is configured to add a frequency jitter to the power converter.Type: ApplicationFiled: October 8, 2020Publication date: January 28, 2021Applicant: Diodes IncorporatedInventors: Wei Chuan Su, Feng-Jung Huang, Yuan-Hung Lo
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Patent number: 10790804Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: GrantFiled: April 24, 2016Date of Patent: September 29, 2020Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.Inventors: Shawn Bawell, Jean-Marc Mourant, Feng-Jung Huang
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Patent number: 9853616Abstract: Variable feedback architecture and control techniques for variable gain amplifiers (VGAs) concurrently maintain, across a wide range of VGA gain settings, minimal input and output impedance variations, a low noise figure, low rates of change in noise figure, high signal-to-noise ratio (SNR), high quality of service (QoS), low distortion, high and relatively constant output third order intercept point (i.e., IP3 or TOI). Variable feedback counteracts impedance variations caused by gain variations. Compared to conventional high performance VGAs, noise figure is lower (e.g. 3 dB lower at maximum gain and 12 dB lower at minimum gain) and relatively constant, IP3 is higher and relatively constant, small signal third order intermodulation signal (IM3) tone slope is relatively constant and input and output impedances are relatively constant. As gain decreases, the noise figure advantage is nearly dB per dB compared to conventional high performance VGAs.Type: GrantFiled: April 25, 2013Date of Patent: December 26, 2017Assignee: INTERGRATED DEVICE TECHNOLOGY, INC.Inventors: Feng-Jung Huang, Jean-Marc Mourant
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Publication number: 20160241216Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: ApplicationFiled: April 24, 2016Publication date: August 18, 2016Inventors: SHAWN BAWELL, Jean-Marc Mourant, Feng-Jung Huang
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Patent number: 9374078Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: GrantFiled: June 30, 2012Date of Patent: June 21, 2016Assignee: INTEGRATED DEVICE TECHNOLOGY iNC.Inventors: Shawn Bawell, Jean-Marc Mourant, Feng-Jung Huang
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Publication number: 20140320207Abstract: Variable feedback architecture and control techniques for variable gain amplifiers (VGAs) concurrently maintain, across a wide range of VGA gain settings, minimal input and output impedance variations, a low noise figure, low rates of change in noise figure, high signal-to-noise ratio (SNR), high quality of service (QoS), low distortion, high and relatively constant output third order intercept point (i.e., IP3 or TOI). Variable feedback counteracts impedance variations caused by gain variations. Compared to conventional high performance VGAs, noise figure is lower (e.g. 3 dB lower at maximum gain and 12 dB lower at minimum gain) and relatively constant, IP3 is higher and relatively constant, small signal third order intermodulation signal (IM3) tone slope is relatively constant and input and output impedances are relatively constant. As gain decreases, the noise figure advantage is nearly dB per dB compared to conventional high performance VGAs.Type: ApplicationFiled: April 25, 2013Publication date: October 30, 2014Inventors: Feng-Jung Huang, Jean-Marc Mourant
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Patent number: 8704684Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: GrantFiled: June 30, 2012Date of Patent: April 22, 2014Assignee: Integrated Device Technology Inc.Inventors: Shawn Bawell, Jean-Marc Mourant, Feng-Jung Huang
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Patent number: 8680835Abstract: A buck DC-to-DC converter having a novel output protection mechanism, comprising: a buck converter circuit, having a line input end, a DC output end, a first feedback end, and a second feedback end; a voltage divider, having an input terminal and an output terminal, the input terminal being coupled to the DC output end of the buck converter circuit, and the output terminal coupled to the first feedback end of the buck converter circuit for providing a first feedback voltage; and an output current sensing resistor, having one end coupled to the DC output end of the buck converter circuit, and another end coupled to the second feedback end of the buck converter circuit for providing a second feedback voltage; wherein the buck converter circuit uses the first feedback voltage and the second feedback voltage to generate a protection signal.Type: GrantFiled: February 2, 2012Date of Patent: March 25, 2014Assignee: Immense Advance TechnologyInventors: Chia-Chieh Hung, Chung-Han Wu, Feng-Jung Huang
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Publication number: 20140002282Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: ApplicationFiled: June 30, 2012Publication date: January 2, 2014Inventors: Shawn Bawell, Jean-Marc Mourant, Feng-Jung Huang
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Publication number: 20140002214Abstract: Hybrid-coding, multi-cell architecture and operating techniques for step devices provide advantages over binary-coded and thermometer-coded step devices by minimizing or avoiding glitches common in the transient response of binary-coded step devices and by minimizing or avoiding significant increases or degradation in one or more of area, package dimensions, pin counts, power consumption, insertion loss and parasitic capacitance common to thermometer-coded step devices having equivalent range and resolution.Type: ApplicationFiled: June 30, 2012Publication date: January 2, 2014Inventors: Shawn Bawell, Jean-Marc Mourant, Feng-Jung Huang
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Patent number: 8604879Abstract: An impedance-matched amplifier utilizing a feed-forward linearization technique involving multiple negative feedbacks and distortion compensation without active tail current sources reduces noise, distortion, power consumption and heat dissipation requirements and increases linearity, dynamic range, signal-to-noise-ratio, sensitivity and quality of service. Some differential amplifier embodiments of the invention consume less than 2 mA at 5 Volts or 10 mW power consumption per 1 mW in peak and sustained output IP3 performance above 40 dBm. In contrast, for an input signal frequency of 200 MHz, a 16 dB gain state-of-the-art differential amplifier consumes 100 mA at 5 Volts with a peak output IP3 of 36 dBm while an implementation of a 16 dB gain differential amplifier embodying the invention consumes 77.7 mA at 5 Volts with a peak output IP3 of 46 dBm and sustained at or above 40 dBm over a wide frequency range.Type: GrantFiled: March 30, 2012Date of Patent: December 10, 2013Assignee: Integrated Device Technology Inc.Inventors: Jean-Marc Mourant, Feng-Jung Huang, Ran Li, Chuying Mao
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Publication number: 20130257537Abstract: An impedance-matched amplifier utilizing a feed-forward linearization technique involving multiple negative feedbacks and distortion compensation without active tail current sources reduces noise, distortion, power consumption and heat dissipation requirements and increases linearity, dynamic range, signal-to-noise-ratio, sensitivity and quality of service. Some differential amplifier embodiments of the invention consume less than 2 mA at 5 Volts or 10 mW power consumption per 1 mW in peak and sustained output IP3 performance above 40 dBm. In contrast, for an input signal frequency of 200 MHz, a 16 dB gain state-of-the-art differential amplifier consumes 100 mA at 5 Volts with a peak output IP3 of 36 dBm while an implementation of a 16 dB gain differential amplifier embodying the invention consumes 77.7 mA at 5 Volts with a peak output IP3 of 46 dBm and sustained at or above 40 dBm over a wide frequency range.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Inventors: Jean-Marc Mourant, Feng-Jung Huang, Ran Li, Chuying Mao
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Publication number: 20130200863Abstract: A buck DC-to-DC converter having a novel output protection mechanism, comprising: a buck converter circuit, having a line input end, a DC output end, a first feedback end, and a second feedback end; a voltage divider, having an input terminal and an output terminal, the input terminal being coupled to the DC output end of the buck converter circuit, and the output terminal coupled to the first feedback end of the buck converter circuit for providing a first feedback voltage; and an output current sensing resistor, having one end coupled to the DC output end of the buck converter circuit, and another end coupled to the second feedback end of the buck converter circuit for providing a second feedback voltage; wherein the buck converter circuit uses the first feedback voltage and the second feedback voltage to generate a protection signal.Type: ApplicationFiled: February 2, 2012Publication date: August 8, 2013Inventors: Chia-Chieh Hung, Chung-Han Wu, Feng-Jung Huang