System and method for modulating a duty cycle of a switching mode power supply
US9086707B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2013 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Mar 20, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1584
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are methods, devices, and systems to digitally control a duty cycle of a switching mode power supply. In one embodiment, a method comprises calculating a base duty cycle using a power management unit of a high-speed processing unit, calculating a dynamic offset duty cycle using the power management unit to apply a transfer function to a sampled feedback voltage signal, and adding the base duty cycle to the dynamic offset duty cycle to obtain a duty cycle of the switching mode power supply. A system comprises a switching mode power supply, a power management unit, a voltage sensor, and an analog to digital converter all embedded within a high-speed processing unit, and a pulse-width modulator coupled between the switching mode power supply and the high-speed processing unit to modulate the duty cycle of the switching mode power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.