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。

公开(公告)号：US09755518B2

公开(公告)日：2017-09-05

申请号：US15179229

申请日：2016-06-10

Applicant: QUALCOMM Incorporated

Inventor： Mukesh Bansal ,  Michael McGowan ,  Iulian Mirea ,  Qadeer Khan ,  Troy Stockstad ,  Brett Walker ,  Todd Sutton

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

CPC classification number: H02M3/158 ,  G01R19/25 ,  H02M1/08 ,  H02M2001/0009

Abstract: Features and advantages of the present disclosure include a switching regulator and current measurement circuit. In one embodiment, a switching transistor in the switching regulator has a first voltage on a first terminal and a switching voltage on a second terminal. A current measurement circuit has first and second input terminals. A first switch couples the second terminal of the switching transistor to the first terminal of the current measurement circuit when the switching transistor is on, where the second input terminal of the current measurement circuit is coupled to the first terminal of the switching transistor and measurement(s) may be taken. When the switching transistor is off, the first and second input terminals of the current measurement circuit are coupled together, and measurements emulate zero current through the switching transistor.

公开(公告)号：US09271351B2

公开(公告)日：2016-02-23

申请号：US14171472

申请日：2014-02-03

Applicant: QUALCOMM Incorporated

Inventor： Troy Stockstad ,  Bing Liu ,  Joseph D. Rutkowski

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0845

Abstract: In one embodiment, a circuit comprises a current source to produce current to a light emitting diode array. An analog dimming circuit generates a continuous control signal to the current source to control the current in the light emitting diode array according to a range of control signal values when the control signal is above a threshold. Below the threshold, a digital modulation circuit generates an additional modulated digital signal to the current source to control the current in the light emitting diode array according to a range of modulation values when the continuous control signal is below the threshold. The continuous control signal produces current from the current source into the light emitting diode array above a first value. The combination of the continuous control signal and the modulated digital signal produces current in the light emitting diode array below the first value.

Abstract translation: 在一个实施例中，电路包括用于产生电流至发光二极管阵列的电流源。 当控制信号高于阈值时，模拟调光电路产生到电流源的连续控制信号以根据控制信号值的范围来控制发光二极管阵列中的电流。 低于阈值时，数字调制电路产生附加的调制数字信号到电流源，以在连续控制信号低于阈值时根据调制值的范围来控制发光二极管阵列中的电流。 连续控制信号从电流源产生高于第一值的电流至发光二极管阵列。 连续控制信号和调制数字信号的组合在发光二极管阵列中产生低于第一值的电流。

公开(公告)号：US20150349752A1

公开(公告)日：2015-12-03

申请号：US14293489

申请日：2014-06-02

Applicant: QUALCOMM Incorporated

Inventor： Xinli Peng ,  Sandeep Chaman Dhar ,  Troy Stockstad

IPC: H03K3/01

CPC classification number: H05B33/0845 ,  H03K3/01 ,  H05B33/0809 ,  H05B33/0884

Abstract: A circuit for driving a load may include a control loop having a response characteristic. A headroom signal indicative of the headroom voltage of the circuit may set one or more parameters of the response characteristic. A load sign indicative of electrical loading on the circuit may further set the response characteristic.

Abstract translation: 用于驱动负载的电路可以包括具有响应特性的控制回路。 指示电路的净空电压的净空信号可以设置响应特性的一个或多个参数。 指示电路上的电负载的负载符号可以进一步设置响应特性。

公开(公告)号：US20170229962A1

公开(公告)日：2017-08-10

申请号：US15179229

申请日：2016-06-10

Applicant: QUALCOMM Incorporated

Inventor： Mukesh Bansal ,  Michael McGowan ,  Iulian Mirea ,  Qadeer Khan ,  Troy Stockstad ,  Brett Walker ,  Todd Sutton

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/158 ,  G01R19/25 ,  H02M1/08 ,  H02M2001/0009

Abstract: Features and advantages of the present disclosure include a switching regulator and current measurement circuit. In one embodiment, a switching transistor in the switching regulator has a first voltage on a first terminal and a switching voltage on a second terminal. A current measurement circuit has first and second input terminals. A first switch couples the second terminal of the switching transistor to the first terminal of the current measurement circuit when the switching transistor is on, where the second input terminal of the current measurement circuit is coupled to the first terminal of the switching transistor and measurement(s) may be taken. When the switching transistor is off, the first and second input terminals of the current measurement circuit are coupled together, and measurements emulate zero current through the switching transistor.

公开(公告)号：US20160037603A1

公开(公告)日：2016-02-04

申请号：US14883317

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Xinli Peng ,  Sandeep Chaman Dhar ,  Troy Stockstad

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H03K3/01 ,  H05B33/0809 ,  H05B33/0884

Abstract: A circuit may include a control loop to regulate an output of the circuit and a headroom sensing circuit to produce a headroom sensing signal indicative of a headroom voltage of the circuit. The control loop may have a response characteristic that is set based on the headroom signal received from the headroom sensing circuit.

Abstract translation: 电路可以包括用于调节电路的输出的控制回路和净空感测电路，以产生指示电路的净空电压的净空感测信号。 控制回路可以具有基于从上行空间感测电路接收的净空信号而设定的响应特性。

公开(公告)号：US11817771B2

公开(公告)日：2023-11-14

申请号：US17319749

申请日：2021-05-13

Applicant: QUALCOMM Incorporated

Inventor： Troy Stockstad ,  Gianluca Valentino ,  Ricardo Goncalves

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

CPC classification number: H02M1/08 ,  H02M1/0006 ,  H02M3/158

Abstract: Techniques and apparatus for driving a transistor gate of a switched-mode power supply (SMPS) circuit. One example gate driver for a switching transistor of an SMPS circuit generally includes a first power supply rail; a reference rail; an output node for coupling to a control input of the switching transistor; a floating supply node; a pulldown transistor having a drain coupled to the output node of the gate driver and having a source coupled to the reference rail; and a pulldown logic buffer having a first power supply input coupled to the floating supply node, having a second power supply input coupled to the reference rail, and having an output coupled to a gate of the pulldown transistor. The floating supply node is configured to selectively receive power from the first power supply rail and the output node of the gate driver.

公开(公告)号：US09635724B2

公开(公告)日：2017-04-25

申请号：US14883317

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Xinli Peng ,  Sandeep Chaman Dhar ,  Troy Stockstad

IPC: H03G11/04 ,  H05B33/08 ,  H03K3/01

CPC classification number: H05B33/0845 ,  H03K3/01 ,  H05B33/0809 ,  H05B33/0884

Abstract: A circuit may include a control loop to regulate an output of the circuit and a headroom sensing circuit to produce a headroom sensing signal indicative of a headroom voltage of the circuit. The control loop may have a response characteristic that is set based on the headroom signal received from the headroom sensing circuit.

公开(公告)号：US09190986B1

公开(公告)日：2015-11-17

申请号：US14293489

申请日：2014-06-02

Applicant: QUALCOMM Incorporated

Inventor： Xinli Peng ,  Sandeep Chaman Dhar ,  Troy Stockstad

IPC: H03K3/01

CPC classification number: H05B33/0845 ,  H03K3/01 ,  H05B33/0809 ,  H05B33/0884

Abstract: A circuit for driving a load may include a control loop having a response characteristic. A headroom signal indicative of the headroom voltage of the circuit may set one or more parameters of the response characteristic. A load sign indicative of electrical loading on the circuit may further set the response characteristic.

Abstract translation: 用于驱动负载的电路可以包括具有响应特性的控制回路。 指示电路的净空电压的净空信号可以设置响应特性的一个或多个参数。 指示电路上的电负载的负载符号可以进一步设置响应特性。

公开(公告)号：US20150223299A1

公开(公告)日：2015-08-06

申请号：US14171472

申请日：2014-02-03

Applicant: QUALCOMM Incorporated

Inventor： Troy Stockstad ,  Bing Liu ,  Joseph D. Rutkowski

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0845

Abstract: In one embodiment, a circuit comprises a current source to produce current to a light emitting diode array. An analog dimming circuit generates a continuous control signal to the current source to control the current in the light emitting diode array according to a range of control signal values when the control signal is above a threshold. Below the threshold, a digital modulation circuit generates an additional modulated digital signal to the current source to control the current in the light emitting diode array according to a range of modulation values when the continuous control signal is below the threshold. The continuous control signal produces current from the current source into the light emitting diode array above a first value. The combination of the continuous control signal and the modulated digital signal produces current in the light emitting diode array below the first value.

Abstract translation: 在一个实施例中，电路包括用于产生电流至发光二极管阵列的电流源。 当控制信号高于阈值时，模拟调光电路产生到电流源的连续控制信号以根据控制信号值的范围来控制发光二极管阵列中的电流。 低于阈值时，数字调制电路产生附加的调制数字信号到电流源，以在连续控制信号低于阈值时根据调制值的范围来控制发光二极管阵列中的电流。 连续控制信号从电流源产生高于第一值的电流至发光二极管阵列。 连续控制信号和调制数字信号的组合在发光二极管阵列中产生低于第一值的电流。