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:
Dec. 29, 2020
Filed:
Mar. 18, 2020
Shanghai Huali Microelectronics Corporation, Shanghai, CN;
Ning Zhang, Shanghai, CN;
Yifei Qian, Shanghai, CN;
Shanghai Huali Microelectronics Corporation, Shanghai, CN;
Abstract
The present invention discloses a power supply powering-on structure, which comprises an LDO module, a bandgap reference module, a voltage detection module, a bias module and a switch module; the working voltage of the LDO module, the voltage detection module and the bias module adopts external power supply voltage; the working voltage of the bandgap reference module adopts LDO output voltage; the switch module provides switching connection between the output of the bias module and the output of the bandgap reference module for a reference voltage input end and a bias current input end of the LDO module. The present invention can adopt internal power supply voltage to supply power to the bandgap reference module and can also solve the problem that the internal power supply voltage restricts the powering-on and starting of the bandgap reference module.