Invention Grant
- Patent Title: Current sensing circuit and voltage regulator using the same
- Patent Title (中): 电流检测电路和电压调节器使用相同
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Application No.: US11978601Application Date: 2007-10-30
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Publication No.: US07755337B2Publication Date: 2010-07-13
- Inventor: Takaaki Negoro
- Applicant: Takaaki Negoro
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2006-293780 20061030
- Main IPC: G05F1/573
- IPC: G05F1/573
Abstract:
A current sensing circuit for sensing an output current generated by a voltage regulator includes a first double-diffused metal-oxide semiconductor transistor and a current-voltage converter. The first double-diffused metal-oxide semiconductor transistor has a first gate terminal to receive an output control signal from a control circuit of the voltage regulator. The first double-diffused metal-oxide semiconductor transistor is configured to output a current proportional to the output current according to the output control signal. The current-voltage converter is connected to the first double-diffused metal-oxide semiconductor transistor. The current-voltage converter is configured to convert the proportional current to a corresponding voltage.
Public/Granted literature
- US20080100276A1 Current sensing circuit and voltage regulator using the same Public/Granted day:2008-05-01
Information query
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