Single-Inductor Multiple-Output (SIMO) Converter

This chapter presents basic topology of single-inductor multiple-output (SIMO) converters. The simplified architecture of a SIMO converter, which can be divided into power stage and controller. A SIMO controller must control the turning on/off periods of all the switches. SIMO converters are widely used to minimize the size of power management unit (PMU) in different applications. These applications can be classified into Soc and portable electronic systems. Soc integrates the whole system in a single chip to achieve high integrations. Portable electronic systems, for instance tablet applications, require a large driving capability and constitute the whole system in a PCB board. Energy delivery arrangements at the power stage are highly related to the performance of SIMO converters, especially in consideration of cross regulation. In addition, the chip counts and PCB routing area further minimize the area and cost of the power unit in commercial tablets.

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