Invention Grant
- Patent Title: Voltage regulator
- Patent Title (中): 电压调节器
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Application No.: US12291094Application Date: 2008-11-06
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Publication No.: US07956588B2Publication Date: 2011-06-07
- Inventor: Takashi Imura
- Applicant: Takashi Imura
- Applicant Address: JP
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP
- Agency: Adams & Wilks
- Priority: JP2007-291684 20071109; JP2008-259956 20081006
- Main IPC: G05F1/44
- IPC: G05F1/44 ; G05F1/56
Abstract:
A voltage regulator has an error amplifier circuit, and a phase compensation circuit having a capacitor connected in parallel to first and second series-connected resistors. A control transistor has its source-drain path connected between input and output terminals of the phase compensation circuit and its gate connected to a junction point between the first and second resistors. In a transient stage in which the output voltage of the error amplifier circuit changes, the resistance of the phase compensation circuit decreases thereby improving the transient response characteristics of the voltage regulator.
Public/Granted literature
- US20090121690A1 Voltage regulator Public/Granted day:2009-05-14
Information query
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