Patent ID: 11876456
Assignee: ALPHA AND OMEGA SEMICONDUCTOR INTERNATIONAL LP
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. The method of claim 15, wherein each of the first and second PWM signals comprises an up-ramp portion and a down-ramp portion and wherein:
generating the first PWM signal for driving the power stage comprises regulating the up-ramp portion of the first PWM signal to cause the first phase current to flow from the input node to the output node to store energy in the inductor and generating the down-ramp portion of the first PWM signal to deliver the stored energy in the inductor to the output capacitor to regulate the output node to the first voltage value; and
generating the second PWM signal to drive the power stage comprises regulating the down-ramp portion of the second PWM signal to cause the second phase current to flow from the output node to the input node to deliver the stored charges in the output capacitor to the inductor and generating the up-ramp portion of the second PWM signal to deliver the stored energy in the inductor to the input node, there by returning the stored charge in the output capacitor to the input node and driving the output node to the second voltage value.