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:
Jul. 05, 2016
Filed:
Jul. 21, 2014
Intersil Americas Llc, Milpitas, CA (US);
Gwilym Luff, Cambridge, GB;
Intersil Americas LLC, Milpitas, CA (US);
Abstract
Systems, semiconductor structures, electronic circuits and methods for enhanced transient response in Low Dropout (LDO) voltage regulators are disclosed. For example, a semiconductor structure for enhanced transient response in an LDO voltage regulator is disclosed, which includes a first current mirror circuit coupled to an input connection and an output connection of the LDO voltage regulator, a second current mirror circuit coupled to the input connection of the LDO voltage regulator. A first input of a first amplifier circuit is coupled to the second current mirror circuit, a second input of the first amplifier circuit is coupled to the output connection of the LDO voltage regulator, and a third input of the first amplifier circuit is coupled to a reference voltage. An input of a second amplifier circuit is coupled to an output of the first amplifier circuit, an output of the second amplifier circuit is coupled to the first current mirror circuit, an input of a third amplifier circuit is coupled to the output of the first amplifier circuit, and an output of the third amplifier circuit is coupled to the second current mirror circuit. In some implementations, the semiconductor structure is an adaptively-biased LDO voltage regulator formed in a power management integrated circuit (PMIC) or in a power supply on a semiconductor IC, wafer, chip or die.