Voltage regulators
US7973521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2009 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Jul 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Voltage regulators are provided. In one embodiment of the voltage regulators, a differential amplifier receives a reference voltage and a feedback voltage, to generate a control signal according to a voltage difference between the feedback voltage and the reference voltage. An output transistor has a first terminal coupled to a power voltage, a control terminal coupled to the differential amplifier for receiving the control signal, and a second terminal coupled to an output terminal. A voltage feedback circuit is coupled between the output terminal and a ground voltage to generate the feedback voltage. A discharge transistor has a first terminal coupled to the ground voltage, a control terminal coupled to a first control signal, and a second terminal coupled to the output terminal through a first resistor in the voltage feedback circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.