公开(公告)号：US06323700B2

公开(公告)日：2001-11-27

申请号：US09746026

申请日：2000-12-21

Applicant: Gian Hoogzaad

Inventor： Gian Hoogzaad

IPC: H03K300

CPC classification number: G11C27/026

Abstract: The present invention relates to an input buffer for a switched emitter follower-like track-and-hold amplifier comprising an input stage with an input transistor (Q1), a first diode (Q2, Q2b), a cathode side of which first diode (Q2, Q2b) is connected to an emitter of the input transistor (Q1), a first current source (4) between on the one hand the junction between the cathode of the first diode (Q2, Q2b) and the emitter of the input transistor (Q1) and on the other hand a first supply voltage line (2), an anode of the first diode (Q2, Q2b) being connected to a track-and-hold controlled emitter follower (6). The first current source (4) is a non-switched constant current source, and a second current source (M1) is connected between a collector of the input transistor (Q1) and a second supply voltage (3). A second transistor (M2, M2b) comprising a control electrode, a current input electrode and a current output electrode is connected with the control electrode to the junction (n1) between the collector of the input transistor (Q1) and the second current source (M1), with the current input electrode to the second supply voltage (3) and with the current output electrode to the anode of the first diode (Q2, Q2b).

Abstract translation: 本发明涉及一种用于开关式射极跟踪器跟踪保持放大器的输入缓冲器，包括：具有输入晶体管（Q1）的输入级，第一二极管（Q2，Q2b），其第一二极管 Q2，Q2b）连接到输入晶体管（Q1）的发射极，第一电流源（4）一方面是第一二极管（Q2，Q2b）的阴极与输入晶体管的发射极 （Q1），另一方面是第一电源电压线（2），第一二极管（Q2，Q2b）的阳极连接到跟踪和保持控制的射极跟随器（6）。 第一电流源（4）是非开关恒流源，并且第二电流源（M1）连接在输入晶体管（Q1）的集电极和第二电源电压（3）之间。 包括控制电极，电流输入电极和电流输出电极的第二晶体管（M2，M2b）与控制电极连接到输入晶体管（Q1）和第二电流源（Q1）的集电极之间的结（n1） M1），其中电流输入电极到第二电源电压（3），并且电流输出电极连接到第一二极管（Q2，Q2b）的阳极。

公开(公告)号：US09007730B2

公开(公告)日：2015-04-14

申请号：US12980554

申请日：2010-12-29

Applicant: Markus Schmid ,  Johann Baptist Daniel Kuebrich ,  Thomas Antonius Duerbaum ,  Gian Hoogzaad ,  Peter Laro ,  Frans Pansier

Inventor： Markus Schmid ,  Johann Baptist Daniel Kuebrich ,  Thomas Antonius Duerbaum ,  Gian Hoogzaad ,  Peter Laro ,  Frans Pansier

IPC: H02H7/00 ,  H02M1/42

CPC classification number: H02M1/4208 ,  Y02B70/126

Abstract: A surge protection circuit for a circuit having a rectification module. The surge protection circuit includes a first diode, a second diode, a capacitor and a discharge device. The anode of the first diode is connected to a first input of the rectification module, and the anode of the second diode is connected to a second input of the rectification module. The cathodes of the first and second diodes are both connected to the first plate of the capacitor. The second plate of the capacitor is connected to the negative output of the rectification module. The capacitor is configured such that it is consistently charged to substantially the peak value of a supply voltage during normal operation between surge events. The discharge device is connected to the first plate of the capacitor and is configured to discharge the capacitor when the voltage across the capacitor is in excess of the peak of the maximum value of the normal supply voltage and not discharge the capacitor when the voltage across the capacitor is not in excess of the peak of the maximum value of the normal supply voltage.

Abstract translation: 一种具有整流模块的电路的浪涌保护电路。 浪涌保护电路包括第一二极管，第二二极管，电容器和放电装置。 第一二极管的阳极连接到整流模块的第一输入端，第二二极管的阳极连接到整流模块的第二输入端。 第一和第二二极管的阴极都连接到电容器的第一板。 电容器的第二板连接到整流模块的负极输出端。 电容器被配置为使得其在浪涌事件之间的正常操作期间一直被充电到基本上电源电压的峰值。 放电装置连接到电容器的第一板，并且当电容器两端的电压超过正常电源电压的最大值的峰值时，对电容器进行放电，并且当跨过电容器的电压 电容器不超过正常电源电压最大值的峰值。

公开(公告)号：US08723446B2

公开(公告)日：2014-05-13

申请号：US12992091

申请日：2009-05-06

Applicant: Gian Hoogzaad ,  Wilhelmus H. M. Langeslag ,  Frans Pansier ,  Cheng Zhang

Inventor： Gian Hoogzaad ,  Wilhelmus H. M. Langeslag ,  Frans Pansier ,  Cheng Zhang

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/083

Abstract: The invention provides a method for cycle-by-cycle control of a LED current (ILED) flowing through a LED circuit arrangement (LEDCIRC) at a mean LED current level. The method comprises a) establishing a converter current (IL), b) establishing an oscillation of the converter current (IL) between substantially a valley current level and substantially a peak current level, c) feeding the LED circuit arrangement (LEDCIRC) with the converter current (IL) as the LED current during a part of an oscillation cycle of the oscillation of the converter current, d) determining a current level correction for compensating a current level error between an integral over an oscillation cycle of the LED current and a reference, the reference being representative of the mean LED current level, and e) adjusting at least one of the valley current level and the peak current level with the current level correction for use in a successive cycle of the oscillation of the converter current. The invention also provides a circuit arrangement operable for using the method, a LED driver IC using the circuit arrangement, a circuit composition with at least one LED and the circuit arrangement, and a lighting system with the circuit composition.

Abstract translation: 本发明提供了一种在平均LED电流水平下逐步控制流过LED电路装置（LEDCIRC）的LED电流（ILED）的方法。 该方法包括：a）建立转换器电流（IL），b）建立基本上谷值电流水平和基本上峰值电流水平之间的转换器电流（IL）的振荡，c）将LED电路装置（LEDCIRC）馈送到 在转换器电流的振荡的振荡周期的一部分期间，转换器电流（IL）作为LED电流，d）确定用于补偿LED电流的振荡周期之间的积分和电流水平误差的电流电平校正， 参考，该参考代表平均LED电流电平，以及e）利用当前电平校正来调整谷电流电平和峰值电流电平中的至少一个，以用于转换器电流的振荡的连续循环。 本发明还提供一种可用于使用该方法的电路装置，使用电路装置的LED驱动器IC，具有至少一个LED的电路组合和电路装置，以及具有电路组成的照明系统。

公开(公告)号：US08692480B2

公开(公告)日：2014-04-08

申请号：US13062176

申请日：2009-09-04

Applicant: Markus Schmid ,  Thomas Antonius Duerbaum ,  Gian Hoogzaad ,  Peter Laro ,  Johann Baptist Daniel Kuebrich

Inventor： Markus Schmid ,  Thomas Antonius Duerbaum ,  Gian Hoogzaad ,  Peter Laro ,  Johann Baptist Daniel Kuebrich

IPC: H02J9/06 ,  H02J1/00 ,  H05B41/38

CPC classification number: H02J1/14 ,  H02M2001/007 ,  H02M2001/008 ,  Y10T307/406 ,  Y10T307/469

Abstract: A power supply unit is provided which comprises an AC/DC conversion unit with an input to which an input voltage is coupled and an output to which a DC bus voltage is coupled. The power supply unit furthermore comprises a DC bus capacitor which is coupled to the output of the AC/DC conversion unit. The power supply unit furthermore comprises at least one sub-power supply unit receiving the DC bus voltage as input for providing at least one power supply. The power supply of the at least one sub-power supply unit or part of the load is at least reduced or switched off if the input voltage falls below a predetermined threshold value.

Abstract translation: 提供了一种电源单元，其包括具有与输入电压耦合的输入的AC / DC转换单元和连接有DC总线电压的输出。 电源单元还包括耦合到AC / DC转换单元的输出的DC总线电容器。 电源单元还包括至少一个子电源单元，其接收DC总线电压作为用于提供至少一个电源的输入。 如果输入电压低于预定阈值，则至少一个子电源单元或负载的一部分的电源至少减小或关断。

公开(公告)号：US08536945B2

公开(公告)日：2013-09-17

申请号：US13431588

申请日：2012-03-27

Applicant: Gian Hoogzaad

Inventor： Gian Hoogzaad

IPC: H03F3/45

CPC classification number: H03F3/45089 ,  H03F3/4508 ,  H03F2203/45392 ,  H03F2203/45631 ,  H03F2203/45644 ,  H03F2203/45696 ,  H03F2203/45722

Abstract: A differential output stage configured for receiving differential input signal comprising first and second signals, comprising a first output for providing a first output signal, and a second output providing a second output signal, the first and second output signals together forming a differential output signal, a first voltage buffer and first controlled current source each connected to the first output, the first voltage buffer being driven by a signal in-phase with the first input signal, the first controlled current source being driven by a signal in-phase with the second input signal, and a second voltage buffer and second controlled current source each connected to the second output, the second voltage buffer being driven by a signal in-phase with the second input signal, the second controlled current source being driven a signal in-phase with by the first input signal.

Abstract translation: 差分输出级，被配置为用于接收包括第一和第二信号的差分输入信号，包括用于提供第一输出信号的第一输出和提供第二输出信号的第二输出，所述第一和第二输出信号一起形成差分输出信号， 每个连接到第一输出的第一电压缓冲器和第一受控电流源，第一电压缓冲器由与第一输入信号同相的信号驱动，第一受控电流源由与第二输入信号同相的信号驱动 输入信号，以及每个连接到第二输出的第二电压缓冲器和第二受控电流源，第二电压缓冲器由与第二输入信号同相的信号驱动，第二受控电流源被驱动信号同相 用第一个输入信号。

公开(公告)号：US08203283B2

公开(公告)日：2012-06-19

申请号：US12669384

申请日：2008-07-16

Applicant: Gian Hoogzaad

Inventor： Gian Hoogzaad

IPC: G05F1/00

CPC classification number: H05B33/0818 ,  H05B33/0803 ,  H05B33/083

Abstract: The invention provides a LED arrangement including a LED string of a series arrangement of LED segments. A LED segment includes a single LED or a series arrangement of LEDs. A switching element (12, 22) is arranged in parallel with each corresponding LED segment (10, 20) of the LED string, for controlling a current (52, 62) through the LED segment (10, 20). A capacitor (13, 23) is arranged in parallel with each corresponding LED segment (10, 20) in order to prevent the occurrence of possibly harmful current spikes while switching one or more LED segments. The LED arrangement may also include a switched-mode power supply (2001). The invention further provides a LED assembly. A plurality of such LED assemblies assembles easily into a LED arrangement according to the invention.

Abstract translation: 本发明提供一种LED装置，其包括LED段的串联布置的LED串。 LED段包括单个LED或LED的串联布置。 开关元件（12,22）与LED串的每个对应的LED段（10,20）平行布置，用于控制通过LED段（10,20）的电流（52,62）。 电容器（13,23）与每个对应的LED段（10,20）平行布置，以便在切换一个或多个LED段时防止可能有害的电流尖峰的发生。 LED布置还可以包括开关模式电源（2001）。 本发明还提供一种LED组件。 多个这样的LED组件容易地组装成根据本发明的LED装置。

公开(公告)号：US08067900B2

公开(公告)日：2011-11-29

申请号：US12517245

申请日：2007-11-29

Applicant: Peter Deixler ,  Gian Hoogzaad

Inventor： Peter Deixler ,  Gian Hoogzaad

IPC: H05B41/36 ,  G09G3/36

CPC classification number: H05B33/0851 ,  H05B33/0818 ,  H05B33/0827

Abstract: The present invention relates to an electronic device for driving at least a first channel and a second channel of light emitting diodes. The electronic device includes driving means having a first and a second driving portion for driving the first and the second channel of light emitting diodes separately, and configuration means for providing configurability of the driving means for using the driving means at least partially in a shared manner for more than one channel of light emitting diodes.

Abstract translation: 本发明涉及用于驱动至少第一通道和第二通道的发光二极管的电子设备。 电子设备包括驱动装置，其具有用于分别驱动第一和第二通道的第一驱动部分和第二驱动部分;以及配置装置，用于至少部分地以共享的方式提供用于使用驱动装置的驱动装置的可配置性 用于多个通道的发光二极管。

公开(公告)号：US20110134021A1

公开(公告)日：2011-06-09

申请号：US12633230

申请日：2009-12-08

Applicant: Hans Schmitz ,  Gian Hoogzaad ,  Matheus J. G. Lammers

Inventor： Hans Schmitz ,  Gian Hoogzaad ,  Matheus J. G. Lammers

IPC: G09G3/32

CPC classification number: H05B33/086 ,  H05B33/0827

Abstract: A light emitting diode (LED) driver for an LED backlight of a color-sequential liquid crystal display (LCD) and method for operation thereof includes a plurality of LED strings having one or more LEDs emitting light at wavelength corresponding to a predetermined color. A plurality of switches is respectively coupled to the plurality of LED strings. A current source is switchably coupled respectively and sequentially to each of the plurality of switches by control signals to open and close the switches in a pattern that illuminates the LED strings. The switches are opened and closed sequentially to permit a respective LED string to provide an output of the predetermined color for a specific period of time such that a total output of the plurality of LED strings provides an output having the desired overall color perceived through temporal integration of an output of each respective LED string.

Abstract translation: 用于彩色顺序液晶显示器（LCD）的LED背光源的发光二极管（LED）驱动器及其操作方法包括具有一个或多个发出对应于预定颜色的波长的光的LED的多个LED串。 多个开关分别耦合到多个LED串。 电流源通过控制信号分别顺序耦合到多个开关中的每一个，以以照亮LED串的图案来打开和闭合开关。 开关按顺序打开和关闭，以允许相应的LED串在特定时段内提供预定颜色的输出，使得多个LED串的总输出提供具有通过时间积分感知的期望整体颜色的输出 的每个LED串的输出。

公开(公告)号：US20110062889A1

公开(公告)日：2011-03-17

申请号：US12672012

申请日：2008-07-30

Applicant: Gian Hoogzaad ,  Franciscus A. C. M. Schoofs

Inventor： Gian Hoogzaad ,  Franciscus A. C. M. Schoofs

IPC: H05B37/02

CPC classification number: G09G3/342 ,  G09G2330/021 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0827

Abstract: The present invention relates to a solid state lighting system comprising at least one light emitting semiconductor device (LEDstr), at least one driving means (LEDdr) for driving a predetermined current through the at least one light emitting semiconductor device (LEDstr). The lighting system furthermore comprises a first voltage supplying unit (PS1) coupled to provide a first supply voltage (Vbus1) to a first side of the at least one light emitting semiconductor device, and a second voltage supplying unit (PS2) coupled to provide a second supply voltage (Vbus2) for the at least one light emitting semiconductor device. The first and the second supply voltages (Vbus1, Vbus2) are selected to optimize the voltage drop across the at least one light emitting semiconductor device (LEDstr).

Abstract translation: 本发明涉及一种包括至少一个发光半导体器件（LEDstr）的固态照明系统，至少一个用于驱动通过至少一个发光半导体器件（LEDstr）的预定电流的驱动装置（LEDdr）。 所述照明系统还包括耦合到所述至少一个发光半导体器件的第一侧以提供第一电源电压（Vbus1）的第一电压供应单元（PS1），以及耦合到所述至少一个发光半导体器件的第二电压供应单元 用于所述至少一个发光半导体器件的第二电源电压（Vbus2）。 选择第一和第二电源电压（Vbus1，Vbus2）以优化至少一个发光半导体器件（LEDstr）上的电压降。

公开(公告)号：US20100315019A1

公开(公告)日：2010-12-16

申请号：US12864740

申请日：2009-01-27

Applicant: Gian Hoogzaad ,  Hans Schmitz ,  Wilhelmus H. M. Langeslag ,  Radu Surdeanu

Inventor： Gian Hoogzaad ,  Hans Schmitz ,  Wilhelmus H. M. Langeslag ,  Radu Surdeanu

IPC: H05B37/02 ,  G01K7/00

CPC classification number: H05B33/0818 ,  G01K7/01

Abstract: A driver circuit (10) for a light emitting diode comprises a first driver circuit (32, 32′, 32′) for generating a first current output for driving the light emitting diode, wherein the first driver circuit has a control switch for interrupting the supply of the first current output. A second driver circuit (50) is for generating a second current output for driving the light emitting diode, and the second driver circuit also has a control switch for interrupting the supply of the second current output. The overall output of the driver circuit comprises a pulse width modulated output current which alternates between a high current (Ihigh) generated by the first driver circuit and a low current (Ilow) generated by the second driver circuit. By providing separate driver circuits for two different current requirements, the circuits can be optimised for each function. For example the high current value can comprise an LED operation current, and the low current value can comprise a non-zero measurement current.

Abstract translation: 用于发光二极管的驱动电路（10）包括用于产生用于驱动发光二极管的第一电流输出的第一驱动电路（32,32'，32'），其中第一驱动电路具有用于中断 提供第一个电流输出。 第二驱动电路（50）用于产生用于驱动发光二极管的第二电流输出，并且第二驱动电路还具有用于中断第二电流输出的供给的控制开关。 驱动电路的总体输出包括在由第一驱动电路产生的高电流（Ihigh）和由第二驱动电路产生的低电流（I low）之间交替的脉宽调制输出电流。 通过为两种不同的电流要求提供单独的驱动电路，可以针对每个功能优化电路。 例如，高电流值可以包括LED操作电流，并且低电流值可以包括非零测量电流。