Patents by Inventor Kenji MII

Kenji MII 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).

  • Constant voltage circuit for improvement of load transient response with stable operation in high frequency, and electronic device therewith
    Patent number: 11835977
    Abstract: A constant voltage circuit amplifies an error between a reference voltage and an output voltage by an operational amplifier, and controls a load current based on the amplified voltage so that the output voltage becomes a constant voltage. The constant voltage circuit includes voltage detector means that detects only AC components of the output voltage limited to a predetermined band and outputs a detected voltage; voltage amplifier means that amplifies AC components of the detected voltage and outputs an amplified voltage; judgment means that outputs a judgment signal indicating whether or not the amplified voltage equal to or larger than a predetermined threshold; and controller means configured to increase a current value of the constant current source included in the operational amplifier, based on the judgment signal, thereby temporarily increasing a current consumption of the operational amplifier.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 5, 2023
    Assignee: Nisshinbo Micro Devices Inc.
    Inventor: Kenji Mii
  • CONSTANT VOLTAGE CIRCUIT FOR IMPROVEMENT OF LOAD TRANSIENT RESPONSE WITH STABLE OPERATION IN HIGH FREQUENCY, AND ELECTRONIC DEVICE THEREWITH
    Publication number: 20220197320
    Abstract: A constant voltage circuit amplifies an error between a reference voltage and an output voltage by an operational amplifier, and controls a load current based on the amplified voltage so that the output voltage becomes a constant voltage. The constant voltage circuit includes voltage detector means that detects only AC components of the output voltage limited to a predetermined band and outputs a detected voltage; voltage amplifier means that amplifies AC components of the detected voltage and outputs an amplified voltage; judgment means that outputs a judgment signal indicating whether or not the amplified voltage equal to or larger than a predetermined threshold; and controller means configured to increase a current value of the constant current source included in the operational amplifier, based on the judgment signal, thereby temporarily increasing a current consumption of the operational amplifier.
    Type: Application
    Filed: June 12, 2019
    Publication date: June 23, 2022
    Inventor: Kenji MII