Power operational amplifier having oscillation limiter and method therefor
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United States of America Patent
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Nov 15, 1994
Grant Date -
N/A
app pub date -
Jun 3, 1993
filing date -
Jun 3, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An improved power operational amplifier device is disclosed which provides a floating buffer having a first and second RC time constant for controlling a first bank of MOSFET transistors in an output portion of the device. In addition, the power operational amplifier includes a fixed buffer having a third RC time constant for controlling a second bank of MOSFET transistors located in an output portion of the device. A current limit section is coupled to both the floating buffer and the fixed buffer, and, in addition, the current limit section of the improved power operational amplifier has an oscillation stabilizer portion for limiting oscillations of output current during output stage current limit operation. The device also includes an output portion coupled to each of the floating buffer, the fixed buffer, and the current limit section.
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