Power supply conversion apparatus with bootstrap unit
US9356514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Feb 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention disclose a power supply conversion apparatus, where a control unit generates a corresponding control signal according to a received high level pulse width modulation signal, to control a first PMOS transistor Q3, a second PMOS transistor Q4, and a second NMOS transistor Q2 to be turned off successively, and then to make a first NMOS transistor Q1 conducted, which makes a voltage at a second end of a bootstrap capacitor to rise from ground potential to a PVDD, so that a voltage at a first end of the bootstrap capacitor rises to a PVDD+AVDD as the voltage at the second end rises, and a gate turn-on voltage of the first NMOS transistor Q1 reaches the PVDD+AVDD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.