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	Direct current sensing of lasing current provided through a safety switch
	LEE, DENISE
	2017-10-03
著作权人	STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED
专利号	US9780527
国家	美国
文献子类	授权发明
其他题名	Direct current sensing of lasing current provided through a safety switch
英文摘要	One or more embodiments are directed to laser circuits, methods and devices that include a current sensing circuit for sensing a lasing current provided to a laser diode or device. One embodiment is directed to a circuit that includes a laser device, a switching device, a current sensing circuit and a current comparator. The switching device has a first conduction terminal coupled to the laser device and a second conduction terminal coupled to a supply voltage. The switching device is configured to operatively supply a lasing current to the laser device. The current sensing circuit is coupled to the switching device and is configured to generate a sense current representative of the lasing current. The current comparator is configured to receive the sense current from the current sensing circuit, to receive a reference current, and to compare the sense current with the reference current. If the sense current exceeds the reference current, the current comparator is configured to output an overcurrent detection signal.
公开日期	2017-10-03
申请日期	2016-08-17
状态	授权
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/35666]
专题	半导体激光器专利数据库
作者单位	STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED
推荐引用方式 GB/T 7714	LEE, DENISE. Direct current sensing of lasing current provided through a safety switch. US9780527. 2017-10-03.

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