Linear regulator with first and second feedback voltages
US10416695B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2018 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jun 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45512
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage regulation system includes an error amplifier configured to generate an error amplifier output based on a reference voltage, input voltage, first feedback voltage, and second feedback voltage. The feedback voltages are based on a first output voltage at the system's output node. The system further includes a capacitor configured to provide the first feedback voltage to the error amplifier. The system further includes a voltage-controlled current source configured to generate a current based on the first output voltage. The second feedback voltage is based on the current. The system further includes a transistor configured to provide a second output voltage at the output node based on the error amplifier output. The transistor is connected to the output node and the capacitor. Such a voltage regulation system may allow a high power supply rejection response over a wide range of frequencies and loads while maintaining stability and phase margin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.