Patent ID: 9024440
Filing Date: 2015-05-05
Classification: H01L,H02M,H03K,H05K,Y02B

Abstract:
1. A flip-chip package structure, comprising: a) a die having an integrated switching power supply thereon, wherein a first surface of said die comprises a plurality of first bumps having at least two polarities; b) a redistribution layer comprising a plurality of redistribution layer units, each redistribution layer unit having a first surface configured to connect bumps with a same polarity from among said plurality of first bumps, said redistribution layer having a second surface comprising a plurality of second bumps configured to redistribute polarities; c) a lead frame having a plurality of pins, wherein a first surface of said lead frame is configured to connect bumps with a same polarity from among said plurality of second bumps; and d) a flip-chip package configured to package said die, said redistribution layer, said pluralities of first and second bumps, and said lead frame, wherein a second surface of said lead frame is configured to provide electrical connectivity between said integrated switching power supply and a printed-circuit board (PCB).