公开(公告)号：US20190149137A1

公开(公告)日：2019-05-16

申请号：US15813279

申请日：2017-11-15

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Wookang JIN ,  Sungwon YUN ,  Youngmo YANG

IPC: H03K3/014 ,  H03B5/06 ,  H03K3/017 ,  H03K7/08 ,  H03K3/011 ,  H02M7/5395

Abstract: An oscillator for a pulse width modulation (PWM) controller includes an oscillation circuit including a capacitor and configured to generate a first pulse signal by charging and discharging the capacitor, a frequency divider configured to generate a second pulse signal based on the first pulse signal, the second pulse signal having a lower frequency than the first pulse signal, and an oscillation control circuit coupled to the oscillation circuit and the frequency divider and configured to generate control signals for holding the charging and discharging of the capacitor during an oscillation holding operation.