Patents by Inventor Xiangxu (Alan) Yu

Xiangxu (Alan) Yu 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).

  • Inrush current control
    Patent number: 8422179
    Abstract: An inrush current control circuit selectively short-circuit bypasses an inrush current limiting resistor (R1) of a power supply that includes a switching transistor (Q1) having a control terminal (gate or base) driven in dependence on a pulse width modulated (PWM) drive signal. The inrush current control circuit includes a bypass transistor (Q3), a first resistor (R3), a capacitor (C2), a second resistor (R2) and a diode (D3), wherein an anode terminal of the diode (D3) is connected to one of the terminals of the switching transistor (Q1) of the power supply.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: April 16, 2013
    Assignee: Intersil Americas Inc.
    Inventors: Xiaodong (David) Zhan, Xiangxu (Alan) Yu
  • INRUSH CURRENT CONTROL
    Publication number: 20110019316
    Abstract: An inrush current control circuit selectively short-circuit bypasses an inrush current limiting resistor (R1) of a power supply that includes a switching transistor (Q1) having a control terminal (gate or base) driven in dependence on a pulse width modulated (PWM) drive signal. The inrush current control circuit includes a bypass transistor (Q3), a first resistor (R3), a capacitor (C2), a second resistor (R2) and a diode (D3), wherein an anode terminal of the diode (D3) is connected to one of the terminals of the switching transistor (Q1) of the power supply.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 27, 2011
    Applicant: INTERSIL AMERICAS INC.
    Inventors: Xiaodong (David) Zhan, Xiangxu (Alan) Yu