Invention Grant
- Patent Title: Light emitting driver circuit with bypass and method
- Patent Title (中): 具有旁路和方法的发光驱动电路
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Application No.: US12238623Application Date: 2008-09-26
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Publication No.: US08129916B2Publication Date: 2012-03-06
- Inventor: Kedar Godbole
- Applicant: Kedar Godbole
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B39/04 ; H05B41/36 ; H05B37/00 ; H05B39/00 ; H05B41/14

Abstract:
A light emitting driver circuit, system, and method are provided. The driver circuit system and method can be implemented in various ways. An embodiment includes a bypass circuit which diverts current from the LEDs whenever a switch coupled to the LEDs incurs residual current when turned off. In an additional or alternative embodiment, the residual current can be sensed and the amount of residual current used to trigger fetching of a compensation value. That compensation value can change a dimming function forwarded to the switch in order to compensate for, offset, or substantially eliminate the residual current through that switch.
Public/Granted literature
- US20100079074A1 Light Emitting Driver Circuit with Bypass and Method Public/Granted day:2010-04-01
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