Switching power source device
US8879281B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 2013 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Sep 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching power source device IS capable of guaranteeing a normal switching operation even when the input of a coil voltage used for adjusting a dead time is eliminated. The switching power source device includes a dead time adjustment circuit that generates an ON trigger signal that regulates an ON timing of one of the first and second switching elements after elapse of a predetermined dead time from an OFF timing of the other switching element and that adjusts the dead time according to a temporal change of a terminal voltage detected from an auxiliary coil of an inductor; and a disable control circuit that detects a temporal change of the coil voltage during activation and disables a function of the dead time adjustment circuit adjusting the dead time when the coil voltage does not temporally change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.