The 15th IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)

407 / 2019-02-14 13:38:00

An Effective PFM Control Strategy for Charge Control in SIMO DC-DC

SIMO,charge control,PFM,unbalanced load

Plenary track > Power Electronics

An effective pulse frequency modulation (PFM) control strategy compatible with the charge control is designed for Single Inductor Multiple Outputs (SIMO) DC-DC to deal with its unbalanced loads. Different from the traditional charge control strategy in PFM, it can function without buffer time that degrades the circuit efficiency. Simulation results show that the proposed PFM control strategy can steadily regulate the load-unbalance outputs, even in no load condition. Meanwhile, the PWM/PFM mode conversion can also be achieved.