Single inductor dual output dc-dc converter for space-limited or large input voltage variation systems

Design and implementation of a digitally controlled single‐inductor dual‐output (SIDO) buck converter

“…Several single-inductor multiple-output (SIMO) converters have been proposed, such as those that use dual buck outputs [5][6][7][8][9][10][11], dual boost outputs [12][13][14][15], four buck outputs [16], buck and boost outputs [17][18][19][20], and dual buck and dual boost outputs [21]. Compared to conventional solution with independent switching converters, SIMO converters require fewer power switches and have a smaller footprint, which significantly reduces their cost, size, and weight.…”

“…Compared to conventional solution with independent switching converters, SIMO converters require fewer power switches and have a smaller footprint, which significantly reduces their cost, size, and weight. PD control has multiple energizing cycles per switching period, leading to a cross-regulation problem [6,8,10,20], which occurs when a load transient on one output affects the regulation of another. PD control has multiple energizing cycles per switching period, leading to a cross-regulation problem [6,8,10,20], which occurs when a load transient on one output affects the regulation of another.…”

“…Control schemes for SIMO converters are classified according to energizing cycles per switching period into two types [22]: power distribution (PD) and time multiplexing (TM). PD control has multiple energizing cycles per switching period, leading to a cross-regulation problem [6,8,10,20], which occurs when a load transient on one output affects the regulation of another. Unfortunately, in order to prevent cross-regulation in PD control, the number of components and design complexity increase, and the compensator design is difficult.…”