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. 18, 2023
Filed:
Mar. 05, 2020
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Michel Cuenca, Septemes les Vallons, FR;
Bruno Gailhard, Rognes, FR;
Daniele Mangano, San Gregorio di Catania, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
STMicroelectronics (Rousset) SAS, Rousset, FR;
Abstract
In an embodiment, a method includes: receiving a main supply voltage; generating a first regulated output voltage with a DC-DC converter; providing the main supply voltage to a driver of a control terminal of an output transistor of an LDO; receiving, at an input terminal of the LDO, the first regulated output voltage; generating, at an output terminal of the LDO, a second regulated output voltage from the first regulated output voltage; and when the main supply voltage falls below a predetermined threshold, discharging a capacitor coupled to the input terminal of the LDO by activating a switch coupled to the input terminal of the LDO.