Internal high-voltage current source in an AC/DC power converter
US8587973B2 · kind B2 · utility
1Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2009 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Jun 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33523
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
AC/DC power converters having an under voltage lockout circuit with first and second thresholds and associated methods of operation are disclosed herein. In one embodiment, the first threshold is greater than the second threshold. The under voltage lockout circuit is configured to enable a current source to charge the capacitor when the voltage across the capacitor is less than the second threshold. The under voltage lockout circuit is configured to shut off the current source and to enable a pulse width modulator circuit to switch a transistor when the voltage is greater than the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.