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. 24, 2018
Filed:
May. 30, 2014
Csmc Technologies Fab1 Co., Ltd., Jiangsu, CN;
Nan Zhang, Jiangsu, CN;
CSMC TECHNOLOGIES FAB1 CO., LTD., Jiangsu, CN;
Abstract
A starting circuit () of a power management chip, comprising: a starting capacitor (C) which is used for connecting a power supply via an external resistor (R) to perform charging; a switch circuit () which is connected between the external resistor (R) and the starting capacitor (C); a voltage detection circuit () which is used for detecting a voltage on the starting capacitor (C) and is connected to the switch circuit () so as to control the on/off switching of the switch circuit (); and a voltage maintaining circuit () which is connected between the starting capacitor (C) and an operating circuit of the power management chip and is used for acquiring a voltage that maintains the starting capacitor (C) from the operating circuit of the power management chip, wherein when the voltage detection circuit () detects that the starting capacitor (C) reaches the starting voltage of the power management chip, the broken circuit of the switch circuit () is controlled. Further provided is a power management chip including the above-mentioned starting circuit (). Disconnecting an external power source from the starting capacitor after the operating circuit of the power management chip is started can reduce the electric energy consumption.