Bootstrap scheme for BULK-BOOST converter
US8779733B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bootstrap circuit for a voltage converter includes a bootstrap capacitor, a stable current module for generating a stable output current according to a stable output voltage, a current mirror module having a first branch circuit for generating a current signal according to the stable output current, and a charge module including a cascode transistor module including a plurality of transistors serially connected and a charge resistor for generating a conduction voltage according to the current signal, and an output circuit coupled to the current mirror module and the cascode transistor module for outputting the conduction voltage to charge the bootstrap capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.