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. 15, 2019
Filed:
Nov. 19, 2018
Stmicroelectronics (Grenoble 2) Sas, Grenoble, FR;
STMicroelectronics (Grenoble 2) SAS, Grenoble, FR;
Abstract
In an embodiment, a method for soft-starting an SMPS includes: asserting an enable signal; disabling an output stage of the SMPS; after asserting the enable signal, measuring a feedback voltage of the SMPS; receiving a first reference voltage at an input reference node; comparing the measured feedback voltage with the first reference voltage; and, when the measured feedback voltage is lower than the first reference voltage, storing the feedback voltage in a soft-start capacitor, connecting an output reference node to the soft-start capacitor, enabling the output stage of the SMPS, and switching a transistor of the output stage to regulate the output voltage based on the feedback voltage and a second reference voltage at the output reference node, and injecting a current into the soft-start capacitor.