Power supply device and method with a power factor correction circuit
US6222746A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Feb 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply device for supplying power to an electronic apparatus with a power saving mode includes a rectifier circuit for converting an AC input voltage Vin to a DC voltage, a boost circuit for boosting the DC voltage to a prescribed level, a power factor correction (PFC) circuit for correcting the power factor of the output voltage of the boost circuit according to a feedback voltage from the output of the boost circuit, and a disable circuit for disabling the power factor correction (PFC) circuit in a power saving mode, whereby the power consumption is prevented for a switching operation of the power factor correction (PFC) circuit in the power saving mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.