Peak and valley current mode control using double compensation ramp
US12348131B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2019 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Jul 27, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling peak and valley of a controlled current in a switched mode power supply comprising a current mode control loop and being connected to an electrical power source. The method comprises providing an upper compensation ramp signal for controlling a peak of the controlled current, the upper compensation ramp signal being a sawtooth signal with a negative, falling, substantially linear slope (−Se,Upper), starting periodically in time. The method further comprising providing a lower compensation ramp signal for controlling a valley of the controlled current, the lower compensation ramp signal being a sawtooth signal with a positive, raising, substantially linear slope (Se,Lower), starting periodically in time. The method additionally comprising providing a reference voltage signal (Vref), to the control loop, and obtaining a signal indicative of the controlled current (I). Finally, the method comprises comparing alternatingly the signal indicative of the controlled current referenced to the reference voltage signal to the lower compensation ramp and the upper compensation ramp, respectively, to switch on or off the electrical power from the electrical power source…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.