公开(公告)号：US10038377B2

公开(公告)日：2018-07-31

申请号：US15232646

申请日：2016-08-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bhaskar Ramachandran ,  Sujan Kundpur Manohar ,  Jae Won Choi

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/36

Abstract: One example includes a power supply system. The system includes a power stage comprising at least one power switch that is periodically activated during an on-time of a duty-cycle based on a switching signal to generate an output voltage at an output. The system also includes a switching controller configured to generate the switching signal based on an amplitude of a capacitor voltage at a control node associated with a capacitor that defines the on-time of the duty-cycle as a function of the capacitor being periodically charged. The switching controller includes a pre-bias stage configured to apply a pre-bias charge to the capacitor via an offset voltage prior to a start of the on-time to pre-charge parasitic capacitance associated with the power supply system prior to the start of the on-time.