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:
Aug. 20, 2019
Filed:
Jan. 20, 2015
Taiwan Semiconductor Manufacturing Company Limited, Hsinchu, TW;
Chen-Lun Yen, Kaohsiung, TW;
Cheng-Hsiung Kuo, Hsinchu County, TW;
Taiwan Semiconductor Manufacturing Company Limited, Hsinchu, TW;
Abstract
A bandgap reference voltage circuit includes a bandgap reference voltage generator and a startup current generator. The bandgap reference voltage generator is configured to generate a first voltage and a second voltage. The startup current generator includes a voltage comparator and a switch. The voltage comparator is connected to the bandgap reference voltage generator and is configured to compare the first voltage with the sum of the second voltage and an offset voltage and to generate a comparison result. The switch is connected between the voltage comparator and the bandgap reference voltage generator and is configured to selectively connect a supply voltage to the bandgap reference voltage generator based on the comparison result. A device that includes the circuit is also disclosed. A method of operating the circuit is also disclosed.