PWM controlled loop with anti-windup protection
US10141835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2018 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jan 8, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system to regulate an output voltage based on a reference voltage is described. The system has an error amplifier to determine an error voltage by cumulating a deviation of a feedback voltage from the reference voltage, wherein the feedback voltage is indicative of the output voltage. The system has a PWM unit to generate a PWM control signal based on the error voltage. In addition, the system has a voltage setting unit to set the output voltage based on the PWM control signal. The system has a saturation detection unit to detect a saturation situation of the system. In addition, the system has a clamping means to interrupt a further build-up of the error voltage in the saturated direction while allowing a modification of the error voltage in an opposite direction, opposite to the saturated direction, if a saturation situation is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.