Power switch driving circuits and switching mode power supply circuits thereof
US8860472B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2013 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/063
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a power switch driving circuit can include: (i) a first circuit configured receiving a control signal, and controlling a first transistor gate, where a first transistor source is coupled to a power supply, and a first transistor drain is coupled to a driving signal configured to control a power switch; (ii) a second circuit configured to receive the control signal, and to control a second transistor gate, where a second transistor source is coupled to ground, and a second transistor drain is coupled to the driving signal; and (iii) a driving enhancement circuit having a third transistor and a first inverter that is configured to invert an output of the first circuit to control a third transistor gate, where a third transistor source is coupled to the driving signal, and a third transistor drain is coupled to the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.