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:
Oct. 14, 2025
Filed:
Jul. 14, 2023
Cypress Semiconductor Corporation, San Jose, CA (US);
Radhika Venkatasubramanian, Austin, TX (US);
Stephen Dow, Austin, TX (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A DC-DC converter and method of operating the same are provided to increase efficiency in window-mode. Generally, the method begins in a coasting-period with receiving in the converter a window-mode enable signal, and opening a switch through which a low reference voltage generator is coupled to a capacitively-charged switched reference (SR) on a first input of a low-side-comparator. Operation of all circuits and devices in the converter, except the comparator is suspended. The voltage on the SR is compared to a feedback voltage (vfb) coupled to a second input of the comparator from a regulated rail coupled to an output of the converter, to sense a change in the voltage on the regulated rail as it is discharged through a load coupled thereto. When vfb is less than the SR voltage, in a burst-period operation of circuits and devices is resumed, and the switch is closed to recharge the SR.