Patents by Inventor Rebecca Tristram

Rebecca Tristram 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).

  • Adaptive slope compensation
    Patent number: 11482928
    Abstract: A solution is provided for adaptive slope compensation in a DC-DC switching converter. Jitter is reduced for on times less than 50% Tpd by using two or more different slopes for the compensation ramp. Additionally, any discontinuities at the 50% duty cycle point are reduced. Details of the compensation ramp are described, where the ramp rate for the first half of the switching period, for on times greater than 50% Tpd, decreases with increasing on time until, at an on time of 100% Tpd, it is approximately zero. In addition, the ramp rate for the second half of the switching period, for on times greater than 50% Tpd, decreases with decreasing on time until, at a duty of 50%, it is equal to the ramp rate used for the first half of the switching period.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 25, 2022
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Rebecca Tristram, Mark Childs, Jens Masuch
  • Adaptive Slope Compensation
    Publication number: 20210203225
    Abstract: A solution is provided for adaptive slope compensation in a DC-DC switching converter. Jitter is reduced for on times less than 50% Tpd by using two or more different slopes for the compensation ramp. Additionally, any discontinuities at the 50% duty cycle point are reduced. Details of the compensation ramp are described, where the ramp rate for the first half of the switching period, for on times greater than 50% Tpd, decreases with increasing on time until, at an on time of 100% Tpd, it is approximately zero. In addition, the ramp rate for the second half of the switching period, for on times greater than 50% Tpd, decreases with decreasing on time until, at a duty of 50%, it is equal to the ramp rate used for the first half of the switching period.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 1, 2021
    Inventors: Rebecca Tristram, Mark Childs, Jens Masuch