公开(公告)号：US20180269722A1

公开(公告)日：2018-09-20

申请号：US15458195

申请日：2017-03-14

Applicant: Texas Instruments Incorporated

Inventor： JINGWEI XU ,  VIJAYALAKSHMI DEVARAJAN ,  LINDSAY LANGFORD

IPC: H02J50/12 ,  H02M3/04

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02M3/04

Abstract: A wireless resonant power transmitter includes a first half-bridge and a second half-bridge adapted to be class D driven that are coupled to drive a series resonant circuit including a primary inductor (L) having a high side terminal and a low side terminal, and primary capacitor (C). A peak voltage sensor that includes a summing block is coupled across the high side terminal and the low side terminal of the primary L, and a peak-to-peak voltage detector is coupled to an output of the summing block to generate a DC voltage signal that is proportional to a peak-to-peak voltage across the primary C.

公开(公告)号：US20180109186A1

公开(公告)日：2018-04-19

申请号：US15296839

申请日：2016-10-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： GANGQIANG ZHANG ,  VAIBHAV GARG ,  XIAOCHUN ZHAO ,  ANGELO W.D. PEREIRA ,  VIJAYALAKSHMI DEVARAJAN

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M2001/0009 ,  H02M2001/0032 ,  H02M2003/1566

Abstract: One example includes a switching power supply. The switching power supply includes a power stage, a feedback loop, and a simulated feedback error generator. The power stage provides an output signal in response to a switching signal. The feedback loop monitors the output signal and provides a feedback error signal to adjust the switching signal to regulate the output signal. The simulated feedback error generator temporarily provides a simulated feedback error signal during a transition period from the low power mode to a high power mode of the switching power supply until the feedback loop has enough time to provide the feedback error signal.