发明授权
- 专利标题: LED driver circuits and methods
- 专利标题(中): LED驱动电路及方法
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申请号: US12024180申请日: 2008-02-01
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公开(公告)号: US07843147B2公开(公告)日: 2010-11-30
- 发明人: Steven Chenetz
- 申请人: Steven Chenetz
- 申请人地址: US CA San Jose
- 专利权人: Micrel, Incorporated
- 当前专利权人: Micrel, Incorporated
- 当前专利权人地址: US CA San Jose
- 代理机构: Dorsey & Whitney LLP
- 主分类号: H05B37/00
- IPC分类号: H05B37/00
摘要:
An LED driver circuit may include dimming circuitry. In particular, the LED driver circuit may include a switching converter, an LED and a switch. The LED may be electrically connected to the switching converter and the switch may be connected in parallel with the LED. The switching converter and/or the switch may be configured to be controlled to achieve dimming of the LED. Current may be supplied to the LED and the switch may be turned on and off to dim the LED. The switching converter coupled to the LED may include a switching element in series with an inductor and the LED. In such case, the switching element may be turned on to supply current to the LED and the inductor, and the switch may be turned on and off to dim the LED.
公开/授权文献
- US20090195180A1 LED DRIVER CIRCUITS AND METHODS 公开/授权日:2009-08-06
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