Invention Grant
- Patent Title: Regulator having phase compensation circuit
- Patent Title (中): 具有相位补偿电路的调节器
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Application No.: US12534128Application Date: 2009-08-02
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Publication No.: US08179108B2Publication Date: 2012-05-15
- Inventor: Hiroyuki Kimura
- Applicant: Hiroyuki Kimura
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Charles Bergere
- Main IPC: G05F1/575
- IPC: G05F1/575
Abstract:
A regulator circuit includes an output transistor that generates an output current in accordance with a control voltage that is applied to a control terminal of the output transistor. A differential amplifier provides feedback control of the control voltage in accordance with a level of the output current. A phase compensation circuit is connected to the differential amplifier and the control terminal of the output transistor. The phase compensation circuit adjusts an output impedance of the differential amplifier. The phase compensation circuit includes a variable resistor that decreases the output impedance of the differential amplifier when the output current increases.
Public/Granted literature
- US20110025280A1 REGULATOR HAVING PHASE COMPENSATION CIRCUIT Public/Granted day:2011-02-03
Information query
IPC分类:
