The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2016
Filed:
May. 05, 2015
Fidelix Co., Ltd., Seongnam-si, Gyeonggi-do, KR;
Pradeep Katikaneni, Plano, TX (US);
Won Eung Kim, Plano, TX (US);
FIDELIX CO., LTD., Seongnam-Si, Gyeonggi-Do, KR;
Abstract
A DC-to-DC voltage converter using switching frequency detection is provided. The DC-to-DC voltage converter includes a voltage conversion block including a power switch configured to be turned on in response to a power driving signal and to provide an input supply voltage to be output as the converted output voltage when the power switch is turned on, wherein the converted output voltage has a level that varies depending on a duty cycle of the power driving signal, and a switching control block that receives the converted output voltage and a feedback signal to control the duty cycle of the power driving signal based on a frequency of a feedback signal, the feedback signal having the same period as the power driving signal. Accordingly, when the level of the input supply voltage is changed, the converted output voltage can be recovered to the target level while the switching frequency of the power driving signal is maintained at the same value as before the change of the level of the input supply voltage. Electronic devices adopting the DC-to-DC voltage converter can be strong against an electromagnetic interference phenomenon and have improved performance in a low frequency band.