Invention Grant
- Patent Title: Electric circuit of a switchable current source
- Patent Title (中): 可切换电流源的电路
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Application No.: US14423100Application Date: 2013-07-23
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Publication No.: US09559584B2Publication Date: 2017-01-31
- Inventor: Gonggui Xu
- Applicant: ams AG
- Applicant Address: AT Unterpremstaetten
- Assignee: AMS AG
- Current Assignee: AMS AG
- Current Assignee Address: AT Unterpremstaetten
- Agency: McDermott Will & Emery LLP
- Priority: EP12182037 20120828
- International Application: PCT/EP2013/065509 WO 20130723
- International Announcement: WO2014/029573 WO 20140227
- Main IPC: G05F1/56
- IPC: G05F1/56 ; H05B33/08 ; G09G3/34 ; H02M3/156
Abstract:
An electric circuit of a switchable current source (10) comprises an input path (IP) comprising a first resistor (R1) and a controllable current source (CS) to provide a changeable current (Itrim) and an output current path (OP) including a controllable output driver (MN), a second resistor (R2) and an output terminal (LDR_PIN). A sensing voltage (VSENSE) is tapped at the output current path (OP) and is fed back to a regulator circuit (RC) by a feedback path (FP). The regulator circuit (RC) is connectable to the input path (IP) and the output path (OP) and provides an output signal (Vout2) to control the output current driver (MN). The switchable current source (10) enables to provide an output current (ILDR) at the output terminal (LDR_PIN) in dependence on the first and second resistor (R1, R2) and the changeable current (Itrim).
Public/Granted literature
- US20150244260A1 ELECTRIC CIRCUIT OF A SWITCHABLE CURRENT SOURCE Public/Granted day:2015-08-27
Information query
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