Invention Grant
US07791288B2 Driving circuit for and semiconductor device for driving laser diode
有权
用于驱动激光二极管的驱动电路和半导体器件
- Patent Title: Driving circuit for and semiconductor device for driving laser diode
- Patent Title (中): 用于驱动激光二极管的驱动电路和半导体器件
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Application No.: US12068535Application Date: 2008-02-07
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Publication No.: US07791288B2Publication Date: 2010-09-07
- Inventor: Tsuyoshi Horiuchi , Takehiko Umeyama
- Applicant: Tsuyoshi Horiuchi , Takehiko Umeyama
- Applicant Address: JP Chiyoda-Ku, Tokyo
- Assignee: Renesas Technology Corp.
- Current Assignee: Renesas Technology Corp.
- Current Assignee Address: JP Chiyoda-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2004-133747 20040428; JP2004-179625 20040617; JP2005-061079 20050304
- Main IPC: H05B37/02
- IPC: H05B37/02
Abstract:
A driving circuit supplies a suppression current (I4) which reduces a decrease in a driving current (Idrive) immediately after occurrence of an overshoot at the time of the rise of the driving current (Idrive) to a laser diode (1). The driving circuit draws a suppression current (I5) which reduces an increase in the driving current (Idrive) immediately after occurrence of an undershoot at the time of the fall of the driving current (Idrive) from the driving current (Idrive).
Public/Granted literature
- US20080272708A1 Driving circuit for and semiconductor device for driving laser diode Public/Granted day:2008-11-06
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