Controller for switching power supply
US8315072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2010 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching power supply has an inductor that includes a coil. A chopper circuit chops the primary current drawn through the coil, for the inductor to output an induced current. A multifunction junction of the power supply has a multifunction voltage that is a function of a primary voltage that drives the coil. A first circuit suspends the chopping in response to a first sensed voltage crossing a first threshold, the first sensed voltage being a function of the multifunction voltage. A second circuit suspends the chopping in response to a second sensed voltage crossing a second threshold, the second threshold being a function of the multifunction voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.