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公开(公告)号：US20110193539A1
公开(公告)日：2011-08-11
申请号：US12703725
申请日：2010-02-10
IPC分类号： G05F1/10
CPC分类号： H02M3/156
摘要： A switching regulator generally includes an output circuit, a comparator, an on-time timer and an error amplifier. The output circuit receives an input voltage and produces an output voltage. The comparator causes the output circuit to turn on the output voltage when a feedback voltage falls below a first reference voltage. The on-time timer causes the output circuit to turn off the output voltage after a time-out period. The error amplifier receives the feedback voltage and a second reference voltage and produces the first reference voltage.
摘要翻译： 开关调节器通常包括输出电路，比较器，导通时间定时器和误差放大器。 输出电路接收输入电压并产生输出电压。 当反馈电压低于第一参考电压时，比较器使输出电路接通输出电压。 导通时间定时器使输出电路在超时时间后关闭输出电压。 误差放大器接收反馈电压和第二参考电压并产生第一参考电压。
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公开(公告)号：US07236003B2
公开(公告)日：2007-06-26
申请号：US11239021
申请日：2005-09-29
IPC分类号： H03K19/007
CPC分类号： H03K19/0013 , H03K17/223
摘要： The H-bridge circuit with shoot through current prevention during power-up includes: a high side transistor; a low side transistor coupled in series with the high side transistor; pull down devices coupled to a control node of the high side transistor and to a control node of the low side transistor; and wherein the pull down devices are controlled by a pull down circuit including a Power On Reset circuit, monitoring the digital power supply such that the high side and low side transistors are OFF until the digital power supply has settled to a desired operating voltage.
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公开(公告)号：US06717530B1
公开(公告)日：2004-04-06
申请号：US09638839
申请日：2000-08-14
申请人： Thomas A. Schmidt , Andrew Marshall , Jingwei Xu
发明人： Thomas A. Schmidt , Andrew Marshall , Jingwei Xu
IPC分类号： G08B2926
CPC分类号： H01L23/34 , G06F1/206 , H01L2924/0002 , Y02D10/16 , H01L2924/00
摘要： A temperature sensing system (30) that providing at least one detect signal related to temperature in an integrated circuit is presented. This system uses one thermal sensing circuit (40) to detect two or more temperature thresholds (t2, t3) and differentiates the temperature thresholds using time multiplexed logic control. The system (80) capable of detecting more than two temperatures includes the thermal sensing circuit (90) and a decode circuit (92) with at least one detect latch (100). Optionally, the system may include a hysteresis circuit (60). The thermal sensing circuit (40), connected to the integrated circuit, generates a detect signal (D4) in response to the a temperature selection signal (T1). This flexible on-board temperature monitoring solution reduces the cost of thermal feedback sensing by reducing die area and improves the correlation of detected temperatures. In addition, this solution reduces the possibility of mismatch and tracking errors between two or more sense elements.
摘要翻译： 提供一种在集成电路中提供与温度相关的至少一个检测信号的温度感测系统（30）。 该系统使用一个热感测电路（40）来检测两个或多个温度阈值（t2，t3），并使用时间复用逻辑控制来区分温度阈值。 能够检测多于两个温度的系统（80）包括具有至少一个检测锁存器（100）的热感测电路（90）和解码电路（92）。 可选地，系统可以包括滞后电路（60）。 连接到集成电路的热感测电路（40）响应于温度选择信号（T1）产生检测信号（D4）。 这种灵活的板上温度监测解决方案通过减少管芯面积降低热反馈感测的成本，并提高检测温度的相关性。 此外，该解决方案减少了两个或更多个感测元件之间的失配和跟踪误差的可能性。
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4.发明授权Reducing the natural current limit in a power MOS device by reducing the gate-source voltage 失效通过降低栅源电压降低功率MOS器件的自然电流限制
公开(公告)号：US5541799A
公开(公告)日：1996-07-30
申请号：US265609
申请日：1994-06-24
IPC分类号： H03K17/082 , H02H7/10
CPC分类号： H03K17/0822
摘要： In accordance with the present invention, an output current limit circuit for protecting a power MOS output device of an integrated circuit from an excessive drain current comprises a power MOS device 110, a means 30 to sense a predetermined trigger current, and a means 20 to reduce a gate-source voltage on MOS output device 110 to a predetermined approximately fixed value. A drain current I.sub.D flows through power MOS device 110 from output terminal 102 in response to the gate-source voltage. A short circuit condition may allow an excessive amount of drain current I.sub.D to flow through output terminal 102. The gate-source voltage is reduced in response to sensing the trigger current. Reducing the gate-source voltage raises a drain-source resistance of MOS device 110 and reduces drain current I.sub.D so that MOS device 110 is not damaged by the short circuit condition.
摘要翻译： 根据本发明，用于保护集成电路的功率MOS输出装置与过剩漏极电流的输出限流电路包括功率MOS器件110，感测预定触发电流的装置30和装置20至 将MOS输出装置110上的栅极 - 源极电压降低到预定的大致固定值。 漏极电流ID响应于栅极 - 源极电压从输出端子102流过功率MOS器件110。 短路状态可允许过量的漏极电流ID流过输出端子102.响应于感测触发电流，栅极 - 源极电压被降低。 降低栅极 - 源极电压会提高MOS器件110的漏极 - 源极电阻并且减少漏极电流ID，使得MOS器件110不会被短路状态损坏。
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公开(公告)号：US5420469A
公开(公告)日：1995-05-30
申请号：US142239
申请日：1993-10-25
申请人： Thomas A. Schmidt
发明人： Thomas A. Schmidt
CPC分类号： F16J15/025 , F02B63/04 , F02B77/13 , F16J15/3288 , F02B63/044
摘要： A generator engine set includes a brush partition for separating a space defined between an air blower housing and an enclosure into two areas so that an air flow from one area to the other area is substantially prohibited. The brush partition includes a flexible bristle portion and a rigid spline portion. The spline portion is retained in a receiving member on an outer surface of the air blower housing by a clip. The bristle portion extends toward the enclosure and engages an inner surface of the enclosure. Accordingly, a warmed air flow is prohibited from recirculating back into cooling air inlets.
摘要翻译： 发电机发动机组包括用于将鼓风机壳体和外壳之间限定的空间分隔成两个区域的刷子分隔部，从而基本上禁止从一个区域到另一个区域的空气流。 刷子分隔件包括柔性刷毛部分和刚性花键部分。 花键部分通过夹子保持在鼓风机壳体的外表面上的接收构件中。 刷毛部分朝向外壳延伸并与外壳的内表面接合。 因此，禁止加热的空气流再循环回冷却空气入口。
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6.发明授权Compensation for low gain bipolar transistors in voltage and current reference circuits 失效电压和电流参考电路中低增益双极晶体管的补偿
公开(公告)号：US5349286A
公开(公告)日：1994-09-20
申请号：US79665
申请日：1993-06-18
CPC分类号： G05F3/30
摘要： A bandgap reference circuit 30 includes a current generation circuit 32, a voltage generation circuit 34 connected to current generation circuit 32, and a compensation circuit connected to current generation circuit 32 and voltage generation circuit 34. Current generation circuit 32 sources a current to voltage generation circuit 34 which translates the current into a voltage. Compensation circuit 36 monitors current generation circuit 32 and provides a supplemental current to voltage generation circuit 34. Voltage generation circuit 34 receives the supplemental current and translates it into a supplemental voltage. The summation of the voltage produced by the current received by current generation circuit 32 and the supplemental voltage produced by the supplemental current received by compensation circuit 36 produces a stable reference voltage.
摘要翻译： 带隙参考电路30包括电流产生电路32，连接到电流产生电路32的电压产生电路34以及连接到电流产生电路32和电压产生电路34的补偿电路。电流产生电路32产生电流到电压产生 电路34，其将电流转换成电压。 补偿电路36监视电流产生电路32并向电压产生电路34提供补充电流。电压产生电路34接收补充电流并将其转换成补充电压。 由电流发生电路32接收的电流产生的电压和由补偿电路36接收的补充电流产生的补充电压的总和产生稳定的参考电压。
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7.发明授权公开(公告)号：US07817393B2
公开(公告)日：2010-10-19
申请号：US12198360
申请日：2008-08-26
CPC分类号： H03K17/0822 , H03K17/04206
摘要： Methods and apparatus to provide power distribution switch circuits with fast responses to hard short-circuits are disclosed. In one example, a power distribution switch to detect a hard short-circuit condition is described, comprising a switching device having a resistance between an input terminal and an output terminal, to conduct a current from an input power source having an input voltage to an output terminal having an output voltage, a voltage feedback loop having a digital output voltage to increase the resistance of the switching device in response to a short-circuit based on the output voltage, and an analog current feedback loop to increase the resistance of the switching device based on a current through the switching device and a reference current.
摘要翻译： 公开了提供对硬短路具有快速响应的配电开关电路的方法和装置。 在一个示例中，描述了用于检测硬短路状况的配电开关，其包括具有输入端子和输出端子之间的电阻的开关装置，以将来自具有输入电压的输入电源的电流传导到 具有输出电压的输出端子，具有数字输出电压的电压反馈回路，以响应于基于输出电压的短路而增加开关器件的电阻;以及模拟电流反馈回路，以增加开关电阻 基于通过开关器件的电流和参考电流的器件。
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8.发明申请公开(公告)号：US20100053832A1
公开(公告)日：2010-03-04
申请号：US12198360
申请日：2008-08-26
IPC分类号： H02H3/08
CPC分类号： H03K17/0822 , H03K17/04206
摘要： Methods and apparatus to provide power distribution switch circuits with fast responses to hard short-circuits are disclosed. In one example, a power distribution switch to detect a hard short-circuit condition is described, comprising a switching device having a resistance between an input terminal and an output terminal, to conduct a current from an input power source having an input voltage to an output terminal having an output voltage, a voltage feedback loop having a digital output voltage to increase the resistance of the switching device in response to a short-circuit based on the output voltage, and an analog current feedback loop to increase the resistance of the switching device based on a current through the switching device and a reference current.
摘要翻译： 公开了提供对硬短路具有快速响应的配电开关电路的方法和装置。 在一个示例中，描述了用于检测硬短路状况的配电开关，其包括具有输入端子和输出端子之间的电阻的开关装置，以将来自具有输入电压的输入电源的电流传导到 具有输出电压的输出端子，具有数字输出电压的电压反馈回路，以响应于基于输出电压的短路而增加开关器件的电阻;以及模拟电流反馈回路，以增加开关电阻 基于通过开关器件的电流和参考电流的器件。
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9.发明申请公开(公告)号：US20100052647A1
公开(公告)日：2010-03-04
申请号：US12198353
申请日：2008-08-26
IPC分类号： H02J1/00
CPC分类号： H02H9/025 , H02H3/006 , H03K17/122
摘要： Programmable power distribution switches with two-level current sensing are disclosed. In a particular example, a power distribution switch includes a programmable output device having a resistance based on a programmed maximum output current and generates an output voltage based on the resistance and a load current. The example power distribution switch also includes a reference voltage generator that is configured to generate a reference voltage corresponding to the output voltage when the load current is substantially equal to the programmed maximum output current. A current limiter is also included to reduce the load current in response to a comparison of the output voltage and the reference voltage, when the comparison is indicative of the load current exceeding the programmed maximum output current.
摘要翻译： 公开了具有两电平电流感测的可编程配电开关。 在具体示例中，配电开关包括具有基于编程的最大输出电流的电阻的可编程输出装置，并且基于电阻和负载电流产生输出电压。 示例性配电开关还包括参考电压发生器，其被配置为当负载电流基本上等于编程的最大输出电流时，产生对应于输出电压的参考电压。 当比较指示负载电流超过编程的最大输出电流时，还包括电流限制器以响应输出电压和参考电压的比较来减小负载电流。
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公开(公告)号：US07071740B2
公开(公告)日：2006-07-04
申请号：US10951969
申请日：2004-09-28
IPC分类号： H03B1/00
CPC分类号： H03K17/165 , H03K5/1252 , H03K17/0822
摘要： A FET switching transistor for the solenoid coil of an ABS braking system can switched ON or OFF in no more than substantially 250 ns. A higher current biasing circuit for fast turn on of the FET switching transistor is disconnected when it is necessary to limit the current flowing therethrough, whether during the inrush current to the solenoid coil or due to a fault in the system. The high speed switching of the FET switching transistor causes ringing of the current through the transistor which causes the current detector circuit to exit the current control mode. A deglitch circuit prevents the current detector from exiting the current control mode, so that a timer can be used to turn off the FET switching transistor before it can be damaged by the heat generated during current limit operation.
摘要翻译： 用于ABS制动系统的电磁线圈的FET开关晶体管可以在不超过基本上250ns内接通或断开。 当需要限制流过电流的电流时，不管是在电磁线圈的浪涌电流还是由于系统故障而导致FET开关晶体管快速导通的较高电流偏置电路被断开。 FET开关晶体管的高速开关导致通过晶体管的电流振铃，这导致电流检测器电路退出电流控制模式。 去电阻电路防止电流检测器离开电流控制模式，使得可以使用定时器来在FET开关晶体管在电流限制操作期间产生的热量损坏之前关闭FET开关晶体管。
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