Voltage overshoot limiter

Details Voltage overshoot limiter Voltage overshoot limiter

1995-06-22

1997-04-01

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327312, 327379, 361 18, 361 90, 361111, 326 27, H03K 1716, H03K 508

Patent

active

056170513

ABSTRACT:
A voltage overshoot limiter having a detector circuit that looks at the node at which the undesirable overshoot would occur and provides a signal that is proportional to the unipolar rate of change of voltage at the node. This output is fed back to the first stage of the control circuit, error amplifier, etc. in such a manner as to reduce the rate of change of the circuit's nodal voltages to less than their slewing rates. By modifying the value of the detector's output for a given detected slew rate at the node, it is possible to reduce both its overshoot significantly and to reduce its unipolar rate of voltage change. The invention is described as being unipolar, that is, responding to rates of change of voltages which are either positive or negative, though bipolar implementations may be realized.

REFERENCES:
patent: 4268785 (1981-05-01), Svendsen
patent: 4857863 (1989-08-01), Ganger et al.
patent: 4864249 (1989-09-01), Reiffin
patent: 4992755 (1991-02-01), Seevinck et al.
patent: 5343164 (1994-08-01), Holmdahl
patent: 5414382 (1995-05-01), Larson et al.

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