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:
Jun. 24, 2025
Filed:
Feb. 09, 2023
Circuit and method for start-up of reference circuits in devices with a plurality of supply voltages
Globalfoundries U.s. Inc., Malta, NY (US);
GlobalFoundries U.S. Inc., Malta, NY (US);
Abstract
A reference circuit for an electronic device having a plurality of power supply voltages comprises a supply start-up circuit, a power-down start-up circuit, and a reference generating circuit. The supply start-up circuit comprising a resistive-capacitive (RC) circuit coupled between a first power supply voltage and a ground. The RC circuit includes a pulse node coupled between a first capacitor and a resistive element, and generates a power-up pulse signal at the pulse node. The power-down start-up circuit is powered by a second power supply voltage and comprises a pulse generation circuit that generates a first start-up signal. The reference generating circuit outputs a reference signal. The reference generating circuit exists a low-power mode when either of the power-up pulse signal and the first start-up signal is generated.