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:
Apr. 27, 2021
Filed:
Feb. 07, 2020
Winbond Electronics Corp., Taichung, TW;
Hiroki Murakami, Taichung, TW;
Winbond Electronics Corp., Taichung, TW;
Abstract
A reference voltage generation circuit of the invention includes: PMOS transistors Pand Pconfigured to provide current sources with same current to a first current path and a second current path; a bipolar transistor Qconnected to the PMOS transistors Pon the first current path; a bipolar transistor Qconnected to the PMOS transistors Pon the second current path; a differential amplifier AMP controlling the gates of the PMOS transistors Pand P, such that a voltage of a node VN and a voltage of a node VP are equal; an output node BGR outputting a reference voltage Vref; and a reference voltage guarantee portionoutputting a detecting signal BGRDET when a differences between the voltage of the node VN and the voltage of the node VP is maintained below a determined value.