Bootstrap device and buck-boost converter
US12348124B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Jan 9, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bootstrap device used for first and second transistors of a buck-boost converter includes first and second bootstrap circuits. The first bootstrap circuit generates a first bootstrap voltage, and determines, based on a change among a first switching voltage, a voltage level of a source terminal of the first transistor and the first bootstrap voltage, whether to charge according to at least one of a DC input voltage, a DC output voltage, and a second bootstrap voltage. The second bootstrap circuit generates the second bootstrap voltage, and determines, based on a change among a second switching voltage, a voltage level of a source terminal of the second transistor, and the second bootstrap voltage, whether to charge according to at least one of the DC input voltage, the DC output voltage, and the first bootstrap voltage. The bootstrap device improves charging efficiency of bootstrap capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.