Embodiments of the present invention provide a voltage regulator. The voltage regulator includes a driving mechanism coupled to an output node (VREG), wherein the driving mechanism is configured to provide current to the output node to sustain a predetermined voltage on the output node. In addition, the voltage regulator includes a boost circuit coupled to the output node, wherein the boost circuit is configured to drive an additional current onto the output node to reduce fluctuations in the output node voltage when a load coupled to the output node requires a transient switching current that is faster than the loop response time of the driving mechanism. Furthermore, the boost circuit is biased using a self-tracking mechanism to provide accurate duration and level of the current to the output node in a transient switching event.