Switch-mode drive sensing of reverse recovery in bipolar junction transistor (BJT)-based power converters
US9609701B2 · kind B2 · utility
2Cited by
116References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 27, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Feb 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bipolar junction transistor (BJT) may be used in a power stage DC-to-DC converter, such as a converter in LED-based light bulbs. The power stage may be operated by a controller to maintain a desired current output to the LED load. The controller may operate the power stage by monitoring a start and end of a reverse recovery time of the BJT. Information regarding the start and end of the reverse recovery time may be used in the control of the power stage to improve efficiency of the power stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.