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公开(公告)号：US09723244B2
公开(公告)日：2017-08-01
申请号：US15160205
申请日：2016-05-20
CPC分类号： H04N5/57 , H05B33/083 , H05B33/0842 , H05B37/0254
摘要： An LED driver IC for driving external strings of LEDs includes a prefix register and a data register connected in series with each other and with the prefix and data registers in other driver ICs. The prefix and data registers of the driver ICs are connected in a daisy chain arrangement with an interface IC. The interface IC loads data identifying a functional latch into the prefix register and data defining a functional condition into the data register of each driver IC. The data in the data register is then transferred to the functional latch to control the functional condition within the LED driver IC.
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公开(公告)号：US09577610B2
公开(公告)日：2017-02-21
申请号：US13080136
申请日：2011-04-05
申请人： Kevin Peter D'Angelo
发明人： Kevin Peter D'Angelo
CPC分类号： H03K3/012 , H05B33/0815 , H05B33/0818 , Y02B20/341
摘要： An active clamp current sink is used to voltage protect a low voltage rated, high power current sink that drives illumination current through a string of serially connected LEDs. When the LEDs are turned off as part of a PWM configuration, the forward voltage on the LEDs falls, and the voltage presented to the low voltage rated, high power current sink rises. The active clamp current sink monitors the voltage across the high power current sink and ensures that an adequate current flows through the LEDs. This minimally adequate current maintains a sufficiently large forward voltage through the LEDs, and therefore a sufficiently small voltage is presented to the high power current sink.
摘要翻译： 有源钳位电流吸收器用于电压保护低电压额定的大功率电流吸收器，其通过串联的LED串来驱动照明电流。 当LED作为PWM配置的一部分关闭时，LED上的正向电压下降，并且提供给低电压额定值的高功率电流吸收器的电压上升。 有源钳位电流吸收器监测大功率电流吸收器两端的电压，并确保足够的电流流过LED。 这种最小的电流通过LED保持足够大的正向电压，因此向高功率电流吸收器提供足够小的电压。
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3.发明授权公开(公告)号：US09397570B2
公开(公告)日：2016-07-19
申请号：US14504820
申请日：2014-10-02
CPC分类号： H02M3/158 , H02M1/08 , H02M3/1588 , H02M2001/0022 , Y02B70/1466
摘要： A circuit for controlling a switching regulator is provided. The circuit includes a first input to receive a feedback signal from the switching regulator proportional to an output voltage of the switching regulator, a second input to receive a voltage reference signal, an output to be coupled to an input of the switching regulator, an error amplifier having a first input terminal coupled to the first input to receive the feedback signal, a second input terminal coupled to the second input to receive the voltage reference signal, and an output terminal coupled to the output, and a compensation network coupled between the second input and the output. The compensation network includes a series combination of a first capacitance and a first resistance coupled between the second input and a node, a second resistance coupled between the node and the output, and a second capacitance coupled to the node.
摘要翻译： 提供一种用于控制开关调节器的电路。 该电路包括第一输入端，用于接收与开关稳压器的输出电压成比例的开关调节器的反馈信号，用于接收电压参考信号的第二输入端，耦合到开关调节器的输入端的输出端，误差 放大器，其具有耦合到第一输入端以接收反馈信号的第一输入端，耦合到第二输入以接收电压参考信号的第二输入端以及耦合到输出的输出端，以及耦合在第二输入端之间的补偿网络 输入和输出。 补偿网络包括第一电容和耦合在第二输入和节点之间的第一电阻，耦合在节点和输出之间的第二电阻以及耦合到该节点的第二电容的串联组合。
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公开(公告)号：US09350236B2
公开(公告)日：2016-05-24
申请号：US14340292
申请日：2014-07-24
CPC分类号： H02M3/156 , H02M1/08 , H02M3/1588 , Y02B70/1466
摘要： A switching regulator that includes a high-side MOSFET, a low-side MOSFET, a high-side driver circuit, a low-side driver circuit, and a capacitive coupling circuit. An output of the high-side driver circuit is coupled to a gate of the high-side MOSFET to control the high-side MOSFET to be substantially depleted during a first operational phase and to be substantially enhanced during a second operational phase. An output of the low-side driver circuit is coupled to a gate of the low-side MOSFET to control the low-side MOSFET to be substantially enhanced during the first operational phase and to provide a regulated drain-to-source current during the second operational phase. The capacitive coupling circuit is coupled to an input of the high-side driver circuit and the gate of the low-side MOSFET and decreases the regulated drain-to-source current during a transition from the first operational phase to the second operational phase.
摘要翻译： 一种开关稳压器，包括高边MOSFET，低端MOSFET，高侧驱动电路，低侧驱动电路和电容耦合电路。 高侧驱动电路的输出耦合到高侧MOSFET的栅极，以控制高边MOSFET在第一操作阶段期间基本上耗尽，并且在第二操作阶段期间将显着增强。 低侧驱动电路的输出耦合到低侧MOSFET的栅极，以在第一操作阶段期间基本上增强低边MOSFET的控制，并且在第二操作阶段期间提供稳定的漏极 - 源极电流 操作阶段 电容耦合电路耦合到高侧驱动电路的输入端和低侧MOSFET的栅极，并且在从第一操作阶段到第二操作阶段的转变期间减小了调节的漏极 - 源极电流。
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公开(公告)号：US20150015325A1
公开(公告)日：2015-01-15
申请号：US14465040
申请日：2014-08-21
发明人： Richard K. Williams
IPC分类号： H02M3/07
CPC分类号： H02M3/07 , G05F3/16 , H02M3/337 , H02M2001/009
摘要： A multiple output charge pump that includes a first flying capacitor, a second flying capacitor, a first output node, a second output node, and a switching network. The first output node is configured to provide a first voltage, and the second output node is distinct from the first output node and is configured to provide a second voltage, different than the first voltage. The switching network is configured to provide a first mode of operation in which the first and second flying capacitors are connected in one of in series with one another between an input voltage and ground or in parallel with one another between the input voltage and ground, a second mode of operation in which the first and second flying capacitors are connected in parallel with one another between ground and the second output node, and a third mode of operation.
摘要翻译： 一种多输出电荷泵，包括第一飞行电容器，第二飞行电容器，第一输出节点，第二输出节点和交换网络。 第一输出节点被配置为提供第一电压，并且第二输出节点与第一输出节点不同，并且被配置为提供不同于第一电压的第二电压。 开关网络被配置为提供第一操作模式，其中第一和第二浮动电容器在输入电压和地之间彼此串联连接，或者在输入电压和地之间彼此并联连接， 第二操作模式，其中第一和第二浮动电容器在地和第二输出节点之间彼此并联连接，以及第三操作模式。
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公开(公告)号：US08933634B2
公开(公告)日：2015-01-13
申请号：US13347621
申请日：2012-01-10
CPC分类号： H05B33/0827 , H05B33/0884
摘要： A distributed system for driving strings of series-connected LEDs for backlighting, display and lighting applications includes multiple intelligent satellite LED driver ICs connected to a an interface IC via serial bus. The interface IC translates information obtained from a host microcontroller into instructions for the satellite LED driver ICs pertaining to such parameters as duty factor, current levels, phase delay and fault settings. Fault conditions in the LED driver ICs can be transmitted back to the interface IC. An analog current sense feedback system which also links the LED driver ICs determines the supply voltage for the LED strings.
摘要翻译： 用于驱动用于背光，显示和照明应用的串联LED串的分布式系统包括通过串行总线连接到接口IC的多个智能卫星LED驱动器IC。 接口IC将从主机微控制器获得的信息转换成与占空比，当前电平，相位延迟和故障设置等参数有关的卫星LED驱动器IC的指令。 LED驱动器IC中的故障条件可以传回回接口IC。 也连接LED驱动器IC的模拟电流感测反馈系统确定LED串的电源电压。
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公开(公告)号：US08847564B2
公开(公告)日：2014-09-30
申请号：US13632622
申请日：2012-10-01
发明人： Richard K. Williams
CPC分类号： H02M3/1582 , H02M3/158
摘要： A freewheeling MOSFET is connected in parallel with the inductor in a switched DC/DC converter. When the freewheeling MOSFET is turned on during the switching operation of the converter, while the low-side and energy transfer MOSFETs are turned off, the inductor current circulates or “freewheels” through the freewheeling MOSFET. The frequency of the converter is thereby made independent of the lengths of the magnetizing and energy transfer stages, allowing far greater flexibility in operating and converter and overcoming numerous problems associated with conventional DC/DC converters. In one embodiment the freewheeling MOSFET is an N-channel MOSFET with its body connected to circuit ground and not shorted to either its source or its drain.
摘要翻译： 续流MOSFET在开关DC / DC转换器中与电感并联连接。 在转换器开关操作期间续流MOSFET导通时，低边和能量传输MOSFET关断时，电感电流通过续流MOSFET循环或“续流”。 因此，转换器的频率独立于磁化和能量传递级的长度，允许在操作和转换器方面具有更大的灵活性并克服与常规DC / DC转换器相关的许多问题。 在一个实施例中，续流MOSFET是N沟道MOSFET，其主体连接到电路接地并且不短路到其源极或漏极。
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8.发明申请公开(公告)号：US20140285178A1
公开(公告)日：2014-09-25
申请号：US14298074
申请日：2014-06-06
发明人： Richard K. Williams
IPC分类号： G01R19/00
CPC分类号： G01R19/0092 , G01R1/203 , H01L23/49575 , H01L24/03 , H01L24/05 , H01L24/06 , H01L24/16 , H01L24/17 , H01L24/25 , H01L24/45 , H01L24/48 , H01L24/49 , H01L24/73 , H01L27/088 , H01L29/1087 , H01L29/41758 , H01L29/4238 , H01L29/7833 , H01L2224/0401 , H01L2224/04042 , H01L2224/05093 , H01L2224/05558 , H01L2224/05599 , H01L2224/0603 , H01L2224/13099 , H01L2224/16145 , H01L2224/45144 , H01L2224/48091 , H01L2224/48137 , H01L2224/48247 , H01L2224/48464 , H01L2224/48599 , H01L2224/49111 , H01L2224/49171 , H01L2224/73207 , H01L2224/73257 , H01L2224/85399 , H01L2924/00014 , H01L2924/01004 , H01L2924/01005 , H01L2924/01006 , H01L2924/01013 , H01L2924/01014 , H01L2924/01015 , H01L2924/01019 , H01L2924/01022 , H01L2924/01023 , H01L2924/01027 , H01L2924/01029 , H01L2924/01033 , H01L2924/01047 , H01L2924/01074 , H01L2924/01075 , H01L2924/01078 , H01L2924/01079 , H01L2924/01082 , H01L2924/01083 , H01L2924/014 , H01L2924/10253 , H01L2924/12032 , H01L2924/12035 , H01L2924/1301 , H01L2924/13034 , H01L2924/1305 , H01L2924/13055 , H01L2924/1306 , H01L2924/13062 , H01L2924/13063 , H01L2924/13091 , H01L2924/14 , H01L2924/15747 , H01L2924/181 , H01L2924/19041 , H01L2924/19042 , H01L2924/19043 , H01L2924/30105 , H01L2924/30107 , H01L2924/3011 , H01L2924/3025 , H02M2001/0009 , H03K17/0822 , H03K17/18 , H03K2217/0027 , H01L2924/00 , H01L2924/00012
摘要： A current sensor to be connected in series with a power semiconductor device between a voltage supply terminal and ground. The current sensor includes a first terminal to be coupled to the power semiconductor device, a second terminal to be coupled to one of the voltage supply terminal and ground, and a current mirror. The current mirror includes a first MOSFET and a second MOSFET each having a source, a drain, and a gate. The source of the first MOSFET is connected to the source of the second MOSFET and to the second terminal, the drain of the first MOSFET is connected to the first terminal, and the gate of the first MOSFET is connected to the gate of the second MOSFET.
摘要翻译： 与电源端子和地之间的功率半导体器件串联连接的电流传感器。 电流传感器包括要耦合到功率半导体器件的第一端子，要耦合到电压端子和地之一的第二端子以及电流镜。 电流镜包括第一MOSFET和第二MOSFET，每个具有源极，漏极和栅极。 第一MOSFET的源极连接到第二MOSFET的源极和第二端子，第一MOSFET的漏极连接到第一端子，并且第一MOSFET的栅极连接到第二MOSFET的栅极 。
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9.发明授权公开(公告)号：US08803494B2
公开(公告)日：2014-08-12
申请号：US11835650
申请日：2007-08-08
申请人： Kevin D'Angelo , Robert Wrathall
发明人： Kevin D'Angelo , Robert Wrathall
IPC分类号： H02M3/156
CPC分类号： H02M3/156 , H02M1/08 , H02M3/1588 , Y02B70/1466
摘要： A switching regulator that practices the current invention includes a high-side switch M1 connected between an input voltage and a node LX. A low-side switch is connected between the node LX and ground. An inductor L is connected between LX and an output node (VOUT). A filtering capacitor connects VOUT to ground. The switching regulator has two distinct operational phases. During the first operational phase, the high-side switch is OFF and the low-side switch is ON. During the second operational phase, the high-side switch is ON and the low-side switch acts as a current source. During transitions between the second and first operational phases, the low-side switch is controlled to momentarily decrease the regulated drain-to-source current.
摘要翻译： 实现本发明的开关调节器包括连接在输入电压和节点LX之间的高侧开关M1。 节点LX和地之间连接一个低侧开关。 电感L连接在LX和输出节点（VOUT）之间。 滤波电容将VOUT连接到地。 开关稳压器有两个不同的操作阶段。 在第一个操作阶段，高侧开关为OFF，低端开关为ON。 在第二操作阶段，高侧开关为ON，低端开关作为电流源。 在第二和第一操作阶段之间的转换期间，低侧开关被控制以瞬时地减小调节的漏极 - 源极电流。
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公开(公告)号：US08664715B2
公开(公告)日：2014-03-04
申请号：US13174775
申请日：2011-06-30
IPC分类号： H01L29/66
CPC分类号： H01L29/0638 , H01L21/26586 , H01L29/0615 , H01L29/0626 , H01L29/063 , H01L29/0653 , H01L29/0661 , H01L29/086 , H01L29/1045 , H01L29/105 , H01L29/1083 , H01L29/1087 , H01L29/41766 , H01L29/7809 , H01L29/7811 , H01L29/7835 , H01L29/808 , H01L29/8613 , H01L29/866 , H01L2924/0002 , H01L2924/00
摘要： A transistor is formed inside an isolation structure which includes a floor isolation region and a trench extending from the surface of the substrate to the floor isolation region. The trench may be filled with a dielectric material or may have a conductive material in a central portion with a dielectric layer lining the walls of the trench.
摘要翻译： 晶体管形成在隔离结构内，该隔离结构包括底板隔离区域和从衬底表面延伸到地板隔离区域的沟槽。 沟槽可以填充有介电材料，或者可以在中间部分具有导电材料，其中介电层衬在沟槽的壁上。
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