公开(公告)号：US20140266117A1

公开(公告)日：2014-09-18

申请号：US13828044

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Ricardo T Goncalves ,  Troy Stockstad ,  Joseph D Rutkowski

IPC: H02M3/157

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/155 ,  H02M2001/0003 ,  H02M2001/0045

Abstract: The present disclosure includes systems and methods for 100% duty cycle in switching regulators. A switching regulator circuit includes a ramp generator to produce a ramp signal having a period and a comparator to receive the ramp signal and an error signal, and in accordance therewith, produce a modulation signal. In a first mode of operation, the ramp signal increases to intersect the error signal, and in accordance therewith, changes a state of a switching transistor during each period of the ramp signal. In a second mode of operation, the error signal increase above a maximum value of the ramp signal, and in accordance therewith, the switching transistor is turned on for one or more full periods of the ramp signal.

Abstract translation: 本公开包括用于开关稳压器中的100％占空比的系统和方法。 开关调节器电路包括斜坡发生器以产生具有周期的斜坡信号和用于接收斜坡信号的比较器和误差信号，并且根据其产生调制信号。 在第一操作模式中，斜坡信号增加以与误差信号相交，因此，在斜坡信号的每个周期期间改变开关晶体管的状态。 在第二操作模式中，误差信号增加到斜坡信号的最大值之上，并且根据此，开关晶体管导通一个或多个斜坡信号的整个周期。

公开(公告)号：US09601936B2

公开(公告)日：2017-03-21

申请号：US13852706

申请日：2013-03-28

Applicant: QUALCOMM Incorporated

Inventor： Ricardo T Goncalves ,  Jennifer A Hagstrom

IPC: H02J7/00 ,  H02M1/32 ,  H02M3/158

CPC classification number: H02J7/0052 ,  H02J7/0029 ,  H02J7/0065 ,  H02J2007/0037 ,  H02M1/32 ,  H02M3/1588 ,  Y02B40/90 ,  Y02B70/1466

Abstract: Exemplary embodiments are related to detecting a reverse-boosting operation of a battery charger. A device may include a plurality of switches for receiving an input voltage at an input port and conveying an output voltage. The device may also include a first sensing device coupled to the input port configured to detect if an input current is less than a threshold current. Further, the device may include a second sensing device selectively coupled to the input port to detect if the input voltage is less than a threshold voltage.

公开(公告)号：US09287779B2

公开(公告)日：2016-03-15

申请号：US13828044

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Ricardo T Goncalves ,  Troy Stockstad ,  Joseph D Rutkowski

IPC: G05F1/00 ,  H02M3/158 ,  H02M1/08 ,  H02M3/155 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/155 ,  H02M2001/0003 ,  H02M2001/0045

Abstract: The present disclosure includes systems and methods for 100% duty cycle in switching regulators. A switching regulator circuit includes a ramp generator to produce a ramp signal having a period and a comparator to receive the ramp signal and an error signal, and in accordance therewith, produce a modulation signal. In a first mode of operation, the ramp signal increases to intersect the error signal, and in accordance therewith, changes a state of a switching transistor during each period of the ramp signal. In a second mode of operation, the error signal increase above a maximum value of the ramp signal, and in accordance therewith, the switching transistor is turned on for one or more full periods of the ramp signal.

Abstract translation: 本公开包括用于开关稳压器中的100％占空比的系统和方法。 开关调节器电路包括斜坡发生器以产生具有周期的斜坡信号和用于接收斜坡信号的比较器和误差信号，并且根据其产生调制信号。 在第一操作模式中，斜坡信号增加以与误差信号相交，因此，在斜坡信号的每个周期期间改变开关晶体管的状态。 在第二操作模式中，误差信号增加到斜坡信号的最大值之上，并且根据此，开关晶体管导通一个或多个斜坡信号的整个周期。