Single inductor multiple output switching converter and method to control the same
US12027964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2023 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An embodiment circuit comprises first and second output nodes with an inductor arranged therebetween, and first and second switches coupled to opposing ends of the inductor. The switches are switchable between non-conductive and conductive states to control current flow through the inductor and produce first and second output voltages. The current intensity through the inductor is compared with at least one reference value. Switching control circuitry is coupled with the first and second switches, the first and second output nodes, and current sensing circuitry, which is configured to control the switching frequency of the first and second switches as a function of the output voltages and a comparison at the current sensing circuitry. The switching control circuitry is configured to apply FLL-FFWD processing to produce the reference values as a function of a timing signal, targeting maintaining a constant target value for the converter switching frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.