公开(公告)号：US09287774B2

公开(公告)日：2016-03-15

申请号：US14204092

申请日：2014-03-11

Applicant: Richtek Technology Corporation

Inventor： Ching-Jan Chen ,  Shao-Hung Lu ,  Jian-Rong Huang

IPC: G05F1/00 ,  H02M3/156

CPC classification number: H02M3/156

Abstract: A power converter control circuit includes a feedback circuit and a pulse width modulation signal generating circuit for configuring a power stage circuit to provide power to a load. The feedback circuit generates a first gain signal and a second gain signal according to an output voltage sensing signal coupled with the load. The feedback circuit further generates a feedback signal according to the first gain signal and the second gain signal. The pulse width modulation signal generating circuit configures the operation of the power stage circuit according to the feedback signal and a reference signal. Moreover, the feedback circuit and the pulse width modulation signal generating circuit are configured on the same integrated circuit package.

Abstract translation: 电力转换器控制电路包括反馈电路和用于配置功率级电路以向负载提供电力的脉宽调制信号发生电路。 反馈电路根据与负载耦合的输出电压感测信号产生第一增益信号和第二增益信号。 反馈电路还根据第一增益信号和第二增益信号产生反馈信号。 脉宽调制信号发生电路根据反馈信号和参考信号来配置功率级电路的操作。 此外，反馈电路和脉宽调制信号发生电路配置在相同的集成电路封装上。

公开(公告)号：US20240248501A1

公开(公告)日：2024-07-25

申请号：US18488975

申请日：2023-10-17

Applicant: Richtek Technology Corporation

Inventor： Chien-Yu Chen ,  Li Lin ,  Cheng-Kuang Lin ,  Yue-Hung Tang ,  Ting-Wei Liao ,  Shao-Hung Lu

IPC: G05F1/567 ,  G05F1/46 ,  G05F3/24

CPC classification number: G05F1/567 ,  G05F1/468 ,  G05F3/245

Abstract: A reference voltage generator circuit includes: a first transistor and a second transistor, wherein the first transistor and the second transistor are coupled with each other and are located on a substrate, wherein the first transistor has a first conduction threshold voltage and a first rated voltage, wherein the second transistor has a second conduction threshold voltage and a second rated voltage, wherein the first rated voltage is higher than the second rated voltage; wherein the reference voltage generator circuit is configured to generate a bandgap reference voltage with temperature compensation according to a difference between the first conduction threshold voltage and the second conduction threshold voltage.