MPQ3431A-AEC1 Synchronous Boost Converters Monolithic Power Systems (MPS) MPQ3431A-AEC1 Synchronous Boost Converters are 450kHz, fixed-frequency, highly integrated boost converters with a wide 2.7V to 13V start-up voltage. The MPQ3431A supports up to 20W of load power from a single-cell battery with integrated low RDS(ON) power MOSFETs.