Various embodiments described herein relate to a power management function block and an amplification function block used in the transmitter of a communication subsystem. The power management function block provides improved control for the gain control signal provided to a pre-amplifier and the supply voltage provided to a power amplifier which are both in the amplification function block. The power expended by the power amplifier is optimized by employing a continuous control method in which one or more feedback loops are employed to take into account various characteristics of the transmitter components and control values.