Start-up circuitry and method for power converter
US8129959B1 · kind B1 · utility
4Cited by
6References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jun 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one embodiment, circuitry is provided for startup of a power converter. The circuitry includes a bias capacitor operable to be charged for providing energy to a controller of the power converter. A divider circuit is coupled to a voltage source. Current flows through the divider circuit. A switch, coupled to the divider circuit, is operable to be turned on and off to divert current flow in the divider circuit for charging the bias capacitor. This provides energy to the controller of the power converter at startup without employing an external bias source or high value bleeder resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.