DC-DC converter circuit and corresponding method of operation
US12334817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Oct 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a multi-level hybrid DC-DC converter with a flying capacitor, a feedback circuit includes a first oscillator and produces a first clock signal with a frequency dependent on an output voltage. A second oscillator produces a second clock signal having a frequency dependent on a reference voltage. A logic circuit switches, as a function of the first and second clock signals, connection of the flying capacitor between one state where the flying capacitor is connected between an input node and a switching node, and another state where the capacitor is connected between the switching node and a ground node. The duty cycle of the first/second clock signal varies so that when the flying capacitor voltage is lower than a target voltage a duration of the one state is increased, and when the flying capacitor voltage is higher than the target voltage a duration of the another state is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.