An adaptive power supply regulator based on PSM with fast transient response

An adaptive power supply regulator based on pulse skip modulation (PSM) with fast transient response is proposed in this paper. The controller of the adaptive regulator includes a clock generator, a delayline, two flip-flops, two comparators, a pulse width generator and a NAND gate. For output voltage segmentation is used, the maximum conduction duty ratio of the power switch is not limited by the minimum boundary voltage of voltage scaling to ensure that the regulator operates in discontinuous conduction mode (DCM). Compared with the conventional adaptive power supply regulator based on PSM, the proposed regulator can achieve better transient performance when the output voltage is scaling up. A model of the proposed adaptive power supply regulator is built and simulated with Matlab. The simulation results show that the output voltage of the regulator can scaled from 0.7 V to 1.8 V while the load frequency is scaled from 30 MHz to 150 MHz, and faster transient response can be achieved than conventional adaptive regulator based on PSM.