Invention Grant
- Patent Title: LED driver circuits and methods
- Patent Title (中): LED驱动电路及方法
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Application No.: US12024180Application Date: 2008-02-01
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Publication No.: US07843147B2Publication Date: 2010-11-30
- Inventor: Steven Chenetz
- Applicant: Steven Chenetz
- Applicant Address: US CA San Jose
- Assignee: Micrel, Incorporated
- Current Assignee: Micrel, Incorporated
- Current Assignee Address: US CA San Jose
- Agency: Dorsey & Whitney LLP
- Main IPC: H05B37/00
- IPC: H05B37/00

Abstract:
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.
Public/Granted literature
- US20090195180A1 LED DRIVER CIRCUITS AND METHODS Public/Granted day:2009-08-06
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