Buck converter has high current density

A 12V, 10A, 10MHz series-capacitor buck converter from Texas Instruments is said to have a current density of more than 50A/cm3, four times more than any other 12 V power management component or solution available.

The TPS54A20 SWIFT synchronous DC/DC converter supports up to 5MHz per phase without the use of special magnetics or compound semiconductors. This, says TI, allows the part to be used in 8 to 14V input and 10A output applications.

The TPS54A20 features a two phase, series capacitor DC/DC buck topology that merges a switched capacitor circuit with a multiphase buck converter. This capacitive conversion technology enables high-frequency operation in a device which could be up to seven times smaller than conventional converters.

The DC/DC converter is supplied in a 20pin QFN package measuring 3.5 x 4 x 1mm.