This article proposes a design of a multiphase BUCK-type DC-DC voltage converter. This buck converter allows for a high input voltage range from 3 V to 22 V and integrates two voltage modes, namely pulse width modulation control and input feedforward synchronous buck PWM control, to control dual independent voltage regulators or two-phase single output regulators. This type of step-down converter adopts multiphase cascade technology, which can effectively reduce output voltage ripple and increase output current. Multiphase cascade technology utilizes the controller to output ripples with different phases, interleaving and paralleling the ripple, ultimately reducing the ripple and improving the conversion efficiency of the controller with high stability.
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Fu et al. (2024) studied this question.
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