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. 16, 2022
Filed:
Sep. 27, 2021
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Ashish Sahu, Bengaluru, IN;
Aniket Bharat Waghide, Chandrapur, IN;
Girish Anathahalli Singrigowda, Bangalore, IN;
Prasant Kumar Vallur, Telangana, IN;
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Abstract
A power supply detection circuit for an integrated circuit (IC) includes a reference voltage circuit and a comparator circuit. The reference voltage circuit produces a reference voltage from the supply voltage at a reference voltage node. The comparator circuit includes a first p-type metal oxide semiconductor (PMOS) transistor with a source coupled to a positive supply terminal, a gate receiving the reference voltage, and a drain connected to a comparator output terminal. A first n-type metal oxide semiconductor (NMOS) transistor has a drain connected to the comparator output terminal, a source connected to the negative supply terminal, and a gate receiving a second voltage that varies relative to the supply voltage. A second PMOS transistor has a source coupled to the positive supply terminal, a gate connected to the reference voltage node, and a drain providing the second voltage and coupled to a filter.