公开(公告)号：US20160105094A1

公开(公告)日：2016-04-14

申请号：US14626650

申请日：2015-02-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Frank TANG ,  Kening GAO ,  Sheng LIN ,  Danyang ZHU

IPC: H02M1/36 ,  H02M3/335

CPC classification number: H02M1/36 ,  H02M3/33507 ,  H02M3/33576 ,  H02M3/33592

Abstract: A method includes comparing, by a voltage-second (VS) controller, a first duty cycle used to control a first switch at a primary side of a power transformer of a DC-to-DC converter with a threshold. The method further includes if a value of the first duty cycle is less than the threshold, controlling, by the VS controller, a second duty cycle used to control a second switch at a secondary side of the power transformer, and maintaining a voltage level at an output voltage node at a non-zero value, and if the value of the first duty cycle is greater than the threshold, controlling, by an output voltage loop, the second duty cycle based on the first duty cycle, and monotonically increasing the voltage level the at the output voltage node from the non-zero value to a predetermined value..

Abstract translation: 一种方法包括通过电压 - 秒（VS）控制器比较用于控制具有阈值的DC-DC转换器的电力变压器的初级侧的第一开关的第一占空比。 该方法还包括如果第一占空比的值小于阈值，则由VS控制器控制用于控制电力变压器次级侧的第二开关的第二占空比，并且将电压电平保持在 输出电压节点处于非零值，并且如果第一占空比的值大于阈值，则通过输出电压环路基于第一占空比控制第二占空比，并且单调地增加电压 将输出电压节点处的非零值电平为预定值。