Low trickle current startup bias circuit and method of operation thereof
US6055166A · kind A · utility
23Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Nov 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/901
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For use with a power converter having a power supply control circuit, a current startup bias circuit and a method of operating the same. In one embodiment, the circuit includes: (1) a charge reservoir that receives and stores a trickle current during a startup period of the power converter, a voltage of the charge reservoir increasing as the charge reservoir stores the trickle current and (2) a latch, coupled to the charge reservoir, that activates when the voltage reaches a threshold to couple the charge reservoir to the power supply control circuit and initiate operation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.