Error amplification for current mode control switching regulation
US8018208B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2009 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Aug 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/156
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage regulator has a switch configured to alternately couple and decouple a voltage source through an inductor to a load, feedback circuitry to generate a feedback current, a current sensor configured to measure the feedback current, and a controller configured to receive the feedback current measurement from the current sensor and, in response thereto, to control a duty cycle of the switch. The feedback circuitry includes an amplifier having a first input configured to receive a desired voltage, a second input, and an output, a capacitor connecting the second input to the output of the amplifier, and a resistor connecting the output of the amplifier and the output terminal such that a feedback current proportional to a difference between the desired voltage and an output voltage at an output terminal flows through the resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.