App note from MAXIM Integrated on very compact PMIC using only single inductor to drive three independent switching regulators. Link here
Small form factor and minimal power loss are key criteria for internet of things (IoT) hardware, particularly wearables. Meeting these criteria typically involves some tradeoffs. For example, to meet a specific power consumption goal, a designer usually would have to compromise with an increase in design size.
from Dangerous Prototypes https://ift.tt/2qeVTDR