公开(公告)号：US20060267683A1

公开(公告)日：2006-11-30

申请号：US11398078

申请日：2006-04-04

申请人： Gang Liu ,  Thomas Szepesi

发明人： Gang Liu ,  Thomas Szepesi

IPC分类号： H03F1/14

CPC分类号： H03F3/20 ,  H03F1/0277 ,  H03F3/68

摘要： In one embodiment, an amplifier to drive a load in response to an input voltage signal, the amplifier including a first amplifier to drive the load, a second amplifier, and a control sub-circuit to put the second amplifier into an active mode to drive the load when the output voltage of the first amplifier falls outside a voltage window, and to put the second amplifier into an inactive mode when the output voltage of the first amplifier falls within the voltage window. An embodiment also includes a switch to de-couple a capacitive impedance from the load after the second amplifier is put into its active mode, and to couple the capacitive impedance to the load when the output voltage of the first amplifier falls within the voltage window. Other embodiments are described and claimed.

摘要翻译： 在一个实施例中，放大器响应于输入电压信号驱动负载，放大器包括用于驱动负载的第一放大器，第二放大器和控制子电路，以将第二放大器置于主动模式以驱动 当第一放大器的输出电压落在电压窗口之外时的负载，并且当第一放大器的输出电压落在电压窗内时，将第二放大器置于非活动模式。 实施例还包括一个开关，用于在第二放大器进入其工作模式之后将来自负载的电容性阻抗解耦，并且当第一放大器的输出电压落在电压窗内时，将电容性阻抗耦合到负载。 描述和要求保护其他实施例。

公开(公告)号：US07362169B2

公开(公告)日：2008-04-22

申请号：US11398078

申请日：2006-04-04

申请人： Gang Liu ,  Thomas Szepesi

发明人： Gang Liu ,  Thomas Szepesi

IPC分类号： H03F1/02

CPC分类号： H03F3/20 ,  H03F1/0277 ,  H03F3/68

摘要： In one embodiment, an amplifier to drive a load in response to an input voltage signal, the amplifier including a first amplifier to drive the load, a second amplifier, and a control sub-circuit to put the second amplifier into an active mode to drive the load when the output voltage of the first amplifier falls outside a voltage window, and to put the second amplifier into an inactive mode when the output voltage of the first amplifier falls within the voltage window. An embodiment also includes a switch to de-couple a capacitive impedance from the load after the second amplifier is put into its active mode, and to couple the capacitive impedance to the load when the output voltage of the first amplifier falls within the voltage window. Other embodiments are described and claimed.

摘要翻译： 在一个实施例中，放大器响应于输入电压信号驱动负载，放大器包括用于驱动负载的第一放大器，第二放大器和控制子电路，以将第二放大器置于主动模式以驱动 当第一放大器的输出电压落在电压窗口之外时的负载，并且当第一放大器的输出电压落在电压窗内时，将第二放大器置于非活动模式。 实施例还包括一个开关，用于在第二放大器进入其工作模式之后将来自负载的电容性阻抗解耦，并且当第一放大器的输出电压落在电压窗内时，将电容性阻抗耦合到负载。 描述和要求保护其他实施例。

公开(公告)号：US09077198B2

公开(公告)日：2015-07-07

申请号：US13730865

申请日：2012-12-29

申请人： Thomas Szepesi

发明人： Thomas Szepesi

IPC分类号： H02J7/06 ,  H02J7/24 ,  H02J7/00

CPC分类号： H02J7/0068 ,  H02J7/0081 ,  H02J7/0093

摘要： A method and apparatus for controlling a composite battery charger including a switching regulator and a linear charger charging a battery connected to it, whereby the switching regulator provides the supply voltage for the linear charger and Device Circuits. The control method and circuit fully turns on the pass device of the linear charger in a constant current operating mode and the switching regulator is controlled to maintain a constant charge current through the pass device while also supplying device current to the Device Circuits. The device current may vary. The method and circuit limits the dissipation of the pass device of the linear charger by reducing the supply voltage as a function of the charge current in the CC/CV transition region of the battery charger and by reducing the charge current as a function of the battery voltage if the battery voltage is below a predetermined value related to a predetermined minimum supply voltage value.

摘要翻译： 一种用于控制复合电池充电器的方法和装置，包括开关调节器和对其连接的电池充电的线性充电器，由此开关调节器为线性充电器和设备电路提供电源电压。 控制方法和电路以恒定电流工作模式完全打开线性充电器的通过装置，并且控制开关调节器以通过通过装置保持恒定的充电电流，同时向器件电路提供器件电流。 器件电流可能有所不同。 该方法和电路通过减少作为电池充电器的CC / CV过渡区域中的充电电流的函数的电源电压，并且通过减少作为电池的功能的充电电流来限制线性充电器的通过装置的耗散 如果电池电压低于与预定的最小电源电压值相关的预定值，则电压。

公开(公告)号：US20080001666A1

公开(公告)日：2008-01-03

申请号：US11764177

申请日：2007-06-15

申请人： Thomas Szepesi

发明人： Thomas Szepesi

IPC分类号： H03F3/45

CPC分类号： H03F3/343

摘要： A saturation detection and warning circuit having an adaptive threshold voltage is disclosed. The disclosed circuit can also be used to detect the impending drop out of the low drop out linear voltage regulator. A clamp circuit that clamps the amplifier's output voltage at a voltage that is separated from the adaptive threshold of the saturation detector and warning circuit by a controlled offset voltage is also disclosed.

摘要翻译： 公开了具有自适应阈值电压的饱和度检测和警告电路。 所公开的电路还可以用于检测即将从低压降线性稳压器中掉出的电流。 还公开了一种钳位电路，其将放大器的输出电压以与受控偏移电压的饱和检测器和警告电路的自适应阈值分开的电压进行钳位。

公开(公告)号：US07024649B2

公开(公告)日：2006-04-04

申请号：US10367562

申请日：2003-02-14

申请人： Arthur Collmeyer ,  Thomas Szepesi ,  Dickson Wong ,  Allen Samuels

发明人： Arthur Collmeyer ,  Thomas Szepesi ,  Dickson Wong ,  Allen Samuels

IPC分类号： G06F17/50 ,  G06F9/45 ,  G06F9/455

CPC分类号： G06F17/50 ,  G06F2217/78 ,  G06F2217/86

摘要： A tool is described to aid in the design and verification of multi-input, multi-output power supply systems. The designer describes the system requirements and constraints to the tool, which allows an iterative exploration of various alternative designs that satisfy the requirements and constraints. Alternative designs may comprise different power supply topologies, multiple controllers or multi-controllers, or configurable controllers that implement the power supply system. The tool generates a design for a power supply system that is reconfigurable to allow for performance optimization. The power supply system is configurable automatically according to a digital control signal. The digital control signal comprises configuration data which establishes the structure of the power supply system, and which determines the output power conditions of the power source. The different conditions generated by configuration data comprise output voltage, sequencing information, current, topology, and other operational conditions such as overload protection.

摘要翻译： 描述了一种工具来帮助设计和验证多输入多输出电源系统。 设计人员描述了该工具的系统要求和限制，可以对满足要求和约束条件的各种替代设计进行迭代探索。 替代设计可以包括实现电源系统的不同电源拓扑，多个控制器或多个控制器或可配置的控制器。 该工具生成可重新配置以实现性能优化的电源系统的设计。 电源系统可根据数字控制信号自动配置。 数字控制信号包括建立电源系统的结构并确定电源的输出功率条件的配置数据。 配置数据产生的不同条件包括输出电压，排序信息，电流，拓扑结构和其他运行条件，如过载保护。

公开(公告)号：US20060267562A1

公开(公告)日：2006-11-30

申请号：US11420457

申请日：2006-05-25

申请人： Thomas Szepesi

发明人： Thomas Szepesi

IPC分类号： G05F1/613 ,  G05F3/16

CPC分类号： G05F1/577

摘要： Various embodiments provide a system comprising a regulator and one or more low-drop-out linear regulators for improved efficiency. In one embodiment, a system comprises a regulator and one low-drop-out linear regulator comprising a pass transistor, and furthermore, another transistor matched to the pass transistor except for size. The matching transistor provides information regarding the source-drain voltage drop of the pass transistor. A controller circuit makes use of this information to set the regulator's output voltage to improve the efficiency of the system. Other embodiments are described and claimed.

摘要翻译： 各种实施例提供了一种包括调节器和一个或多个用于提高效率的低掉落线性调节器的系统。 在一个实施例中，系统包括调节器和一个包括传输晶体管的低压降线性调节器，此外，除了尺寸外，还包括与传输晶体管匹配的另一个晶体管。 匹配晶体管提供关于传输晶体管的源极 - 漏极电压降的信息。 控制器电路利用该信息设置调节器的输出电压，以提高系统的效率。 描述和要求保护其他实施例。

公开(公告)号：US07489199B2

公开(公告)日：2009-02-10

申请号：US11764177

申请日：2007-06-15

申请人： Thomas Szepesi

发明人： Thomas Szepesi

IPC分类号： H02H7/20

CPC分类号： H03F3/343

摘要： A saturation detection and warning circuit having an adaptive threshold voltage is disclosed. The disclosed circuit can also be used to detect the impending drop out of the low drop out linear voltage regulator. A clamp circuit that clamps the amplifier's output voltage at a voltage that is separated from the adaptive threshold of the saturation detector and warning circuit by a controlled offset voltage is also disclosed.

摘要翻译： 公开了具有自适应阈值电压的饱和度检测和警告电路。 所公开的电路还可以用于检测即将从低压降线性稳压器中掉出的电流。 还公开了一种钳位电路，其将放大器的输出电压以与受控偏移电压的饱和检测器和警告电路的自适应阈值分开的电压进行钳位。

公开(公告)号：US07486058B2

公开(公告)日：2009-02-03

申请号：US11420457

申请日：2006-05-25

申请人： Thomas Szepesi

发明人： Thomas Szepesi

IPC分类号： G05F1/56

CPC分类号： G05F1/577

摘要： Various embodiments provide a system comprising a regulator and one or more low-drop-out linear regulators for improved efficiency. In one embodiment, a system comprises a regulator and one low-drop-out linear regulator comprising a pass transistor, and furthermore, another transistor matched to the pass transistor except for size. The matching transistor provides information regarding the source-drain voltage drop of the pass transistor. A controller circuit makes use of this information to set the regulator's output voltage to improve the efficiency of the system. Other embodiments are described and claimed.

摘要翻译： 各种实施例提供了一种包括调节器和一个或多个用于提高效率的低掉落线性调节器的系统。 在一个实施例中，系统包括调节器和一个包括传输晶体管的低压降线性调节器，此外，除了尺寸外，还包括与传输晶体管匹配的另一晶体管。 匹配晶体管提供关于传输晶体管的源极 - 漏极电压降的信息。 控制器电路利用该信息设置调节器的输出电压，以提高系统的效率。 描述和要求保护其他实施例。

公开(公告)号：US5498995A

公开(公告)日：1996-03-12

申请号：US355427

申请日：1994-12-13

申请人： Thomas Szepesi ,  Hendrik Santo

发明人： Thomas Szepesi ,  Hendrik Santo

IPC分类号： H02M1/00 ,  H02M3/335 ,  G05F1/10

CPC分类号： H02M3/33507 ,  H02M1/32

摘要： Improved controller circuitry for a switching power supply is disclosed. The switching power supply is of the type having a transformer having primary and secondary windings for generating an output voltage at the secondary winding, a power switch for driving the primary winding, and controller circuitry for activating the power switch. The improved controller circuitry includes an oscillator and frequency shift means. The oscillator generates PWM pulses having a predetermined frequency for use in activating the power switch. The frequency shift means gradually shifts the frequency of the PWM pulses at a shift rate in response to the output voltage decreasing to below a threshold level. In another embodiment, a controller for use in a switching power supply includes an oscillator for generating PWM pulses having a predetermined frequency which determine the switching condition of the supply. Frequency shift means is used gradually shifting the frequency of the PWM pulses at a shift rate in response to an output voltage of the switching power supply decreasing to below a threshold level, and programming means is used for programming the shift rate and the threshold level.

摘要翻译： 公开了用于开关电源的改进的控制器电路。 开关电源具有变压器，其具有用于产生次级绕组上的输出电压的初级和次级绕组，用于驱动初级绕组的电源开关和用于启动电源开关的控制器电路。 改进的控制器电路包括振荡器和频移装置。 振荡器产生具有预定频率的PWM脉冲，用于激活电源开关。 频移装置响应于输出电压降低到阈值水平以下，以移位速率逐渐移动PWM脉冲的频率。 在另一个实施例中，用于开关电源的控制器包括用于产生具有预定频率的PWM脉冲的振荡器，该脉冲确定电源的开关状态。 使用频移装置响应于开关电源的输出电压降低到阈值电平，以移位速率逐渐移动PWM脉冲的频率，并且使用编程装置对移位速率和阈值电平进行编程。

公开(公告)号：US07868600B2

公开(公告)日：2011-01-11

申请号：US12273441

申请日：2008-11-18

申请人： Weihong Qiu ,  Robert H. Isham ,  Zhixiang Liang ,  Thomas Szepesi

发明人： Weihong Qiu ,  Robert H. Isham ,  Zhixiang Liang ,  Thomas Szepesi

IPC分类号： G05F1/56

CPC分类号： H02M3/33507 ,  H02M3/156

摘要： An adaptive pulse positioning system for a voltage converter including an adjustable ramp generator, a pulse generator circuit, and a sense and adjust circuit. The adjustable ramp generator has an adjust input and provides a periodic ramp voltage having an adjustable magnitude based on an adjust signal provided to the adjust input. The pulse generator circuit receives the ramp voltage and generates a pulse signal with control pulses for controlling the output voltage of the voltage controller based on the ramp voltage. The sense and adjust circuit senses an output load transient and provides the adjust signal to the adjust input of the ramp generator to adaptively shift the pulse signal in time in response to the output load transient without adding pulses to the pulse signal.

摘要翻译： 一种用于电压转换器的自适应脉冲定位系统，包括可调斜率发生器，脉冲发生器电路以及感测和调节电路。 可调斜坡发生器具有调节输入，并且基于提供给调节输入的调整信号提供具有可调幅度的周期性斜坡电压。 脉冲发生器电路接收斜坡电压，并产生具有控制脉冲的脉冲信号，用于根据斜坡电压控制电压控制器的输出电压。 感测和调节电路检测输出负载瞬变，并将调整信号提供给斜坡发生器的调整输入端，以响应于输出负载瞬变自适应地移动脉冲信号，而不向脉冲信号添加脉冲。