Invention Grant
- Patent Title: Voltage regulator with adaptive frequency compensation
- Patent Title (中): 具有自适应频率补偿的稳压器
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Application No.: US10891811Application Date: 2004-07-15
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Publication No.: US07268524B2Publication Date: 2007-09-11
- Inventor: Kiyoshi Kase , May Len
- Applicant: Kiyoshi Kase , May Len
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Joanna G. Chiu
- Main IPC: G05F1/40
- IPC: G05F1/40
Abstract:
A voltage regulator includes a first and second amplifier stage, an output stage, and a variable zero circuit. The first amplifier stage is coupled to receive a reference voltage and introduces a first pole of the voltage regulator. The second amplifier stage is coupled to the first amplifier stage and introduces a second pole of the voltage regulator. The output stage is coupled to the second amplifier stage, has an output driver, and is coupled to provide an output voltage based on the reference voltage. The variable zero circuit is coupled to the first amplifier stage, the second amplifier stage, and the output stage. The variable zero circuit provides a zero to compensate for at least one of the first pole or the second pole of the voltage regulator based on a gate to source voltage of the output driver and a drain to source voltage of the output driver.
Public/Granted literature
- US20060012356A1 Voltage regulator with adaptive frequency compensation Public/Granted day:2006-01-19
Information query
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