Bootstrap circuit for DC/DC converter
US10079538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2016 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Apr 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit includes a charge pump to generate an output reference voltage. A first bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between first and second bootstrap nodes of a DC/DC converter. The first bootstrap refresh circuit supplies first charge current that is sourced from the first bootstrap node to the second bootstrap node based on a control signal indicating a first operating mode of the DC/DC converter. A second bootstrap refresh circuit receives the reference voltage from the charge pump and is coupled between the first and second bootstrap nodes of the DC/DC converter. The second bootstrap refresh circuit supplies second charge current from the second bootstrap node to the first bootstrap node based on the control signal indicating a second operating mode of the DC/DC converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.