Drive circiut of switching element for switching mode power supply device
US5684681A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Feb 14, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/3388
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described is a drive circuit of a switching element for controlling a switching element. The drive circuit of a switching element in the present invention includes a power conversion section for converting an alternating current inputted to a direct current; a switching element for switching the direct current of the power conversion section to load; an oscillator for generating a drive signal having rectangular pulse form with a predetermined cycle according to a control signal inputted from outside; a first control signal generator for generating a first control signal each time a drive signal of an oscillator is triggered from a low level to a high level; a second control signal generator for generating a second control signal each time a control signal inputted from outside is triggered from a high level to a low level; and a drive section for switching the switching element to turn-on state according to a first control signal and for switching the switching element to turn-off state according to a second control signal. As the first control signal is generated periodically and successively, precise switching of the switching element can be achieved even when the cycle of switc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.