Design Examples of High Density High Efficiency Low Voltage Power Supplies

This chapter presents several design examples of high-density, high-efficiency (HDHE), low-voltage power supply using the proposed IM circuits. The theoretical results derived from the previous chapters are applied. The following examples will be used to demonstrate the design of high density modules using the proposed IM technique. • For 70V input and 2.5V/140A output, at the switching frequency of 100kHz, a greater than 87% efficiency was achieved. • For 48V (+/-10%) input and 1.2-1.8V/70A output, at the switching frequency of about 120kHz, an efficiency of greater than 81% was obtained. • With 60V input and 3.3V/30A output, at the switching frequency of 500kHHz, a power density of 130W/in, a profile of 0.21", and an efficiency of about 90% were obtained. The first two examples employ the FIM circuit while the third example uses HBIM circuit.