Power operational amplifier having oscillation limiter and metho

Details Power operational amplifier having oscillation limiter and metho Power operational amplifier having oscillation limiter and metho

1993-06-03

1994-11-15

Sikes, William L.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330255, 330258, 330264, 330269, 327322, 327399, H03F 2100, H03G 100, H03G 900, H03G 1100

Patent

active

053651944

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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