A sputtering system and method are disclosed. The system includes first power source coupled to a first magnetron and an anode, and the first power source provides a first anode voltage that alternates between positive and negative during each of multiple cycles. The system also includes a second power source coupled to the second magnetron and the anode, and the second power source provides a second anode voltage that alternates between positive and negative during each of the multiple cycles. A controller of the system controls the first power source and the second power source to phase-synchronize the first anode voltage with the second anode voltage, so both, the first anode voltage and the second anode voltage, are simultaneously negative during a portion of each cycle and simultaneously positive relative to the first and second magnetrons during another portion of each cycle.