Invention Grant
- Patent Title: Driving circuits and methods for controlling light source
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Application No.: US14968209Application Date: 2015-12-14
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Publication No.: US09888544B2Publication Date: 2018-02-06
- Inventor: Xinhe Su , Juan Zhao , Ching-Chuan Kuo
- Applicant: O2Micro Inc.
- Applicant Address: US CA Santa Clara
- Assignee: O2Micro Inc.
- Current Assignee: O2Micro Inc.
- Current Assignee Address: US CA Santa Clara
- Priority: CN201410834789 20141226
- Main IPC: H05B33/08
- IPC: H05B33/08

Abstract:
A method for powering a load by a light source driving circuit is disclosed. The method includes: acquiring a first sensing signal indicative of an average current flowing through the load; generating a first temperature detecting signal indicative of an ambient temperature of the light source driving circuit; and adjusting the average current flowing through the load based on the first temperature detecting signal and the first sensing signal to make the average current flowing through the load to be inversely proportional to the ambient temperature of the light source driving circuit if the ambient temperature of the light source driving circuit is between a first temperature threshold and a second temperature threshold.
Public/Granted literature
- US20160192456A1 DRIVING CIRCUITS AND METHODS FOR CONTROLLING LIGHT SOURCE Public/Granted day:2016-06-30
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