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:
Jul. 16, 2024
Filed:
Jun. 02, 2022
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Buddhika Abesingha, San Diego, CA (US);
Tim Wen Hui Yu, Fremont, CA (US);
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Abstract
Methods and devices for sensing current through a power converter circuit are presented. According to one aspect, currents through high-/low-side transistors are sensed via respective reduced size replica transistors. According to another aspect, the sensed currents are used to generate bridging currents that are combined with the sensed currents to generate a continuous current sense signal. According to another aspect, the bridging currents include slopes that are generated from slopes of the sensed currents. According to another aspect, the sensed currents are combined and filtered to generate a continuous sense signal. According to another aspect, the continuous current sense signal is a voltage that is compared to a reference voltage to generate a current limit status flag used to control operation of the power converter circuit. According to other aspects, the current sense voltage is used to control ON/OFF duty cycle of the power converter circuit.