Patent ID: 9459636
Filing Date: 2016-10-04
CPC Classification: G05F,H02M

Claim Text:
1. A hybrid Switched-Mode Power Supply (SMPS), comprising: linear circuitry configured to produce an output voltage proportional to a variable duty cycle when the SMPS operates in linear mode, the linear circuitry comprising an error amplifier configured to provide an error voltage at an output node based upon a comparison between a reference voltage received at a first input node and the output voltage received at a second input node; hysteretic circuitry coupled to the linear circuitry, the hysteretic circuitry configured to cause the duty cycle to assume one of two predetermined values when the SMPS operates in hysteretic mode; and transition control circuitry coupled to the linear circuitry and to the hysteretic circuitry, the transition control circuitry coupled to a first, second, and third switches configured to bypass at least a portion of the linear circuitry in response to the hybrid SMPS transitioning from the hysteretic mode to the linear mode by applying a hold signal to the first, second, and third switches, wherein the hold signal is configured to close the first and second switches to shortcut the first and second inputs nodes of the error amplifier, respectively, and wherein the hold signal is further configured to close the third switch to force the output node of the error amplifier to a selected voltage level.