A method according to one embodiment may include providing a redundant feedback circuit. The method of this embodiment may also include coupling the redundant feedback circuit to a feedback control loop and decoupling a feedback circuit from the feedback control loop. The method of this embodiment may also include calibrating the feedback circuit. The method of this embodiment may also include recoupling the feedback circuit to the feedback control loop and decoupling the redundant feedback circuit from the feedback control loop. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.