A voltage generation circuitry configured to convert a source voltage into at least one derived output voltage for a power amplifier included in a transmitter based on a target voltage, the voltage generation circuitry comprising: an adjustable boost circuitry configured to multiply the source voltage by a boost factor to generate an input voltage having a voltage equal to or greater than the source voltage; a step-down regulator circuitry configured to regulate the input voltage to generate a regulated output voltage having a voltage that is less than or equal to the input voltage; a voltage splitter circuitry coupled to the regulated output voltage and configured to generate the at least one derived output voltage (V S1 , V S2 , ..., V SN ) from the regulated output voltage; and control circuitry configured to select the boost factor based on the target voltage and the source voltage, and generate control signals for the step-down regulator circuitry based on a difference between a voltage feedback signal from the voltage splitter circuitry and the target voltage, wherein the control circuitry is configured to: determine a ratio between the regulated output voltage and the at least one derived output voltage (V S1 , V S2 , ..., V SN ) based on the transmitter operation parameters; and provide a ratio control signal to the voltage splitter circuitry to control the voltage splitter circuitry to generate the at least one of the derived output voltages (V S1 , V S2 , ..., V SN ) according to the ratio. an adjustable boost circuitry configured to multiply the source voltage by a boost factor to generate an input voltage having a voltage equal to or greater than the source voltage; a step-down regulator circuitry configured to regulate the input voltage to generate a regulated output voltage having a voltage that is less than or equal to the input voltage; a voltage splitter circuitry coupled to the regulated output voltage and configured to generate the at least one derived output voltage (V S1 , V S2 , ..., V SN ) from the regulated output voltage; and control circuitry configured to select the boost factor based on the target voltage and the source voltage, and generate control signals for the step-down regulator circuitry based on a difference between a voltage feedback signal from the voltage splitter circuitry and the target voltage, wherein the control circuitry is configured to: determine a ratio between the regulated output voltage and the at least one derived output voltage (V S1 , V S2 , ..., V SN ) based on the transmitter operation parameters; and provide a ratio control signal to the voltage splitter circuitry to control the voltage splitter circuitry to generate the at least one of the derived output voltages (V S1 , V S2 , ..., V SN ) according to the ratio. determine a ratio between the regulated output voltage and the at least one derived output voltage (V S1 , V S2 , ..., V SN ) based on the transmitter operation parameters; and provide a ratio control signal to the voltage splitter circuitry to control the voltage splitter circuitry to generate the at least one of the derived output voltages (V S1 , V S2 , ..., V SN ) according to the ratio. <EOS>