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. 12, 2021
Filed:
Jul. 10, 2020
Psemi Corporation, San Diego, CA (US);
Walid Fouad Mohamed Aboueldahab, Wokingham, GB;
pSemi Corporation, San Diego, CA (US);
Abstract
Over-current detection circuits and methods for adiabatic power converters that provide numerous advantages over known solutions, including simple digital control, enabling trimming to be done in the low voltage domain, and avoidance of high-voltage sense current mirrors. Embodiments include a slope detector circuit configured to measure a slope of the immediate output voltage Vof an adiabatic power converter during a charge pump clock cycle, compare the measured slope to a pre-determined value representing a slope of an over-current condition, and assert a flag if comparison indicates an over-current condition. An auto-calibration circuit may be included which presents a set of known loads across the output of an adiabatic power converter at device startup, measures the resulting counts from the slope detector counter, and extrapolates to a count that corresponds to a maximum allowed current.