High-precision led control circuit, method and led driver thereof
US-2015382418-A1 · Dec 31, 2015 · US
Driver circuit with an increased power factor
US8963442B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8963442-B2 |
| Application number | US-59030109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 4, 2009 |
| Priority date | Nov 4, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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- Title
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Abstract
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According to one exemplary embodiment, driver circuit coupled between an AC line and a load includes a first semiconductor switch interposed between a bus voltage and a resonant circuit and a second semiconductor switch interposed between the resonant circuit and a ground, where the resonant circuit drives the load. In the driver circuit, the bus voltage has a shape substantially corresponding to a shape of a rectified AC line voltage, thereby increasing a power factor of the driver circuit. The driver circuit can further include a full-bridge rectifier disposed between the resonant circuit and the load. The load can include at least one LED.
First claim
Opening claim text (preview).
The invention claimed is: 1. A driver circuit coupled between an AC line and a load, said driver circuit comprising: a first semiconductor switch interposed between a bus voltage and a resonant circuit and a second semiconductor switch interposed between said resonant circuit and a ground, said first semiconductor switch and said second semiconductor switch having a substantially constant duty cycle; a fault logic block detecting an open or short in said load; said resonant ci…
Assignees
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Classifications
- H05B33/0815Primary
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
- H05B45/39Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8963442B2 cover?
- According to one exemplary embodiment, driver circuit coupled between an AC line and a load includes a first semiconductor switch interposed between a bus voltage and a resonant circuit and a second semiconductor switch interposed between the resonant circuit and a ground, where the resonant circuit drives the load. In the driver circuit, the bus voltage has a shape substantially corresponding …
- Who is the assignee on this patent?
- Ribarich Thomas J, Int Rectifier Corp
- What technology area does this patent fall under?
- Primary CPC classification H05B33/0815. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).