Patents by Inventor YU-SHIN TSAI

YU-SHIN TSAI 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).

  • Patent number: 9122294
    Abstract: A digitally controlled non-inverting buck-boost DC-DC converter system including a non-inverting buck-boost DC-to-DC converter control module and a negative feedback module and applicable for a radio frequency circuit module is revealed. By locking a duty cycle to two specific levels, the non-inverting buck-boost DC-to-DC converter control module only needs a single operation mode to achieve the required effects. Simultaneously, pulse-skipping phenomenon is also avoided. Furthermore, a reference voltage is modified through a reference voltage correction circuit of the negative feedback module to eliminate errors between previous DC output voltage and the reference voltage. Thereby the DC output voltage can remain in a stable state so as to reduce operational defects during the mode transition.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: September 1, 2015
    Assignee: National Cheng Kung University
    Inventors: Han-Chien Liu, Chien-Hung Tsai, Yu-Shin Tsai
  • Publication number: 20140077870
    Abstract: A digitally controlled non-inverting buck-boost DC-DC converter system including a non-inverting buck-boost DC-to-DC converter control module and a negative feedback module and applicable for a radio frequency circuit module is revealed. By locking a duty cycle to two specific levels, the non-inverting buck-boost DC-to-DC converter control module only needs a single operation mode to achieve the required effects. Simultaneously, pulse-skipping phenomenon is also avoided. Furthermore, a reference voltage is modified through a reference voltage correction circuit of the negative feedback module to eliminate errors between previous DC output voltage and the reference voltage. Thereby the DC output voltage can remain in a stable state so as to reduce operational defects during the mode transition.
    Type: Application
    Filed: January 9, 2013
    Publication date: March 20, 2014
    Applicant: NATIONAL CHENG KUNG UNIVERSITY
    Inventors: HAN-CHIEN LIU, CHIEN-HUNG TSAI, YU-SHIN TSAI