Abstract: An exemplary voltage correction circuit includes a high-pass filter coupled with an integrated load, and an active clamp coupled with the high-pass filter in a closed-loop feedback arrangement. The high-pass filter includes an impedance network having a frequency response defining a lower frequency boundary of a passband of the voltage correction circuit, and the active clamp has a frequency response defining an upper frequency boundary of the passband of the voltage correction circuit. The active clamp is adapted to receive an input voltage proportional to a load transient within the passband and to generate an output current of the voltage correction circuit that cancels the effects of the load transient. A loop gain of the voltage correction circuit is greater than or equal to one within the passband and is less than one for frequencies lower than the lower frequency boundary and higher than the upper frequency boundary.

Abstract: A current replication circuit includes a bias circuit and a first transistor sized, relative to a second transistor to be sensed, according to a first scaling factor, the first transistor having an on-resistance associated therewith. The current replication circuit further includes at least one transconductance amplifier having first and second signal paths. The first signal path is connected with the bias circuit in a closed loop configuration such that a quiescent bias point of the transconductance amplifier is controlled as a function of the on-resistance of the first transistor. The second signal path is connected with the second transistor in an open loop configuration and is adapted to convert a sensed input voltage to a corresponding current output signal as a function of the quiescent bias point of the transconductance amplifier, the current output signal being proportional to a current flowing through the second transistor.