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公开(公告)号：US12088199B2
公开(公告)日：2024-09-10
申请号：US17670136
申请日：2022-02-11
发明人： Chen kong Teh
IPC分类号： H02M3/158 , G05F1/652 , H03K17/0812 , H03K17/687
CPC分类号： H02M3/158 , G05F1/652 , H03K17/08122 , H03K17/687
摘要： A power supply circuit in an embodiment includes a first transistor that supplies an output based on an input power supply voltage to a load or stops the supply of the output to the load, a second transistor, one end of a current path of which is connected to the gate of the first transistor and another end of the current path of which is connected to a reference potential point, the second transistor being turned on and off according to a level of a gate voltage of the second transistor, a capacitor connected between an input end of the power supply voltage and a gate of the second transistor, and a voltage holding circuit connected between the gate of the second transistor and the reference potential point and configured to hold the gate voltage of the second transistor.
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公开(公告)号：US08664923B2
公开(公告)日：2014-03-04
申请号：US13112499
申请日：2011-05-20
IPC分类号： G05F1/652
CPC分类号： H02M1/14 , H02M3/1563 , H02M2001/0025
摘要： A buck converter comprising a controller arranged to monitor an output voltage of the converter, the controller comprising: a comparator arranged to compare an output voltage at an output of the buck converter with a reference voltage, and a modification circuit within the comparator or connected to a modification signal input of the comparator and arranged to produce a correction signal to modify the operation of the comparator.
摘要翻译： 一种降压转换器，包括被配置为监视所述转换器的输出电压的控制器，所述控制器包括：比较器，被配置为将所述降压转换器的输出端处的输出电压与参考电压进行比较，以及所述比较器内的修改电路或连接到 比较器的修改信号输入，并被布置成产生校正信号以修改比较器的操作。
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公开(公告)号：US08476881B2
公开(公告)日：2013-07-02
申请号：US12778812
申请日：2010-05-12
申请人： Toshihiko Kasai , Hidenobu Ito
发明人： Toshihiko Kasai , Hidenobu Ito
摘要： A power control device for performing switching control for an output voltage of a power supply device includes a signal generation circuit for comparing a difference between a value of the output voltage and a value of a first reference voltage with a value of a second reference voltage, and for stopping the switching control when a value of the difference is less than or equal to the value of the second reference voltage, and an adjuster circuit for adjusting the second reference voltage based on a ratio between a value of an input voltage and the value of the output voltage.
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4.发明授权Zero current detecting circuit and related synchronous switching power converter 有权零电流检测电路及相关同步开关电源转换器公开(公告)号：US08441238B2
公开(公告)日：2013-05-14
申请号：US13204722
申请日：2011-08-08
申请人： Ke-Horng Chen , Tzu-Yang Yen
发明人： Ke-Horng Chen , Tzu-Yang Yen
CPC分类号： H02M3/1588 , H02M2001/0058 , Y02B70/1466 , Y02B70/1491
摘要： A zero current detecting circuit is disclosed. The zero current detecting circuit includes a first zero current comparator for determining current variation on an inductor of a synchronous switching power converter so as to accordingly turn off a down-bridge transistor of the synchronous power converter; a second zero current comparator for determining whether the first zero current comparator turns off the down-bridge transistor too early or too late and outputting a comparison result, and a counter coupled to the second zero current comparator for ascending or descending a control bit according to the comparison result.
摘要翻译： 公开了零电流检测电路。 零电流检测电路包括：第一零电流比较器，用于确定同步开关功率转换器的电感器上的电流变化，从而相应地关断同步功率转换器的下桥晶体管; 第二零电流比较器，用于确定第一零电流比较器是否过早关断下桥式晶体管，并输出比较结果，以及耦合到第二零电流比较器的计数器，用于根据控制位的上升或下降 比较结果。
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公开(公告)号：US08350546B2
公开(公告)日：2013-01-08
申请号：US11933402
申请日：2007-10-31
CPC分类号： H02H3/20 , G05F1/46 , H02M1/32 , H02M3/005 , H02M2003/1557
摘要： A SEPIC converter with over-voltage protection includes a high-side inductor that connects a node Vw to a node Vx. The node Vx is connected, in turn to ground by a power MOSFET. The node Vx is also connected to a node Vy by a first capacitor. The node Vy is connected to ground by a low-side inductor. A rectifier diode further connects the node Vy and a node Vout and an output capacitor is connected between the node Vout and ground. A PWM control circuit is connected to drive the power MOSFET. An over-voltage protection MOSFET connects an input supply to the PWM control circuit and the node Vw. A comparator monitors the voltage of the input supply. If that voltage exceeds a predetermined value Vref the comparator output causes the over-voltage protection MOSFET to disconnect the node Vw and the PWM control circuit from the input supply.
摘要翻译： 具有过电压保护的SEPIC转换器包括将节点Vw连接到节点Vx的高侧电感器。 节点Vx通过功率MOSFET连接到地。 节点Vx也通过第一电容器连接到节点Vy。 节点Vy通过低侧电感器接地。 整流二极管还连接节点Vy和节点Vout，并且输出电容器连接在节点Vout和地之间。 连接PWM控制电路来驱动功率MOSFET。 过压保护MOSFET将输入电源连接到PWM控制电路和节点Vw。 比较器监视输入电源的电压。 如果该电压超过预定值Vref，则比较器输出使过电压保护MOSFET从输入电源断开节点Vw和PWM控制电路。
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公开(公告)号：US08222874B2
公开(公告)日：2012-07-17
申请号：US11823375
申请日：2007-06-26
申请人： Yaron Slezak , Roy Shoshani
发明人： Yaron Slezak , Roy Shoshani
IPC分类号： G05F1/652
CPC分类号： G05F1/62 , H02M3/156 , H02M2001/0025
摘要： A boost converter circuit that includes a power supply, an inductor coupled to the power supply to receive current from the power supply, a diode coupled to receive current from the inductor and coupled to provide current to a load as an output, an inductor switch coupled to a node between the inductor and the diode for selectively switching current from the inductor anyway from the diode, and a ramp circuit. The ramp circuit is coupled to the node between the inductor and the diode, and is configured to selectively sample a voltage at the node between the inductor and the diode via a sampling switch and use the sampled signal to produce a stabilization ramp to stabilize the output.
摘要翻译： 一种升压转换器电路，其包括电源，耦合到所述电源以从所述电源接收电流的电感器，被耦合以从所述电感器接收电流并耦合以向作为输出的负载提供电流的二极管，耦合到所述电源的电感器开关 到电感器和二极管之间的节点，用于选择性地从二极管切换来自电感器的电流以及斜坡电路。 斜坡电路耦合到电感器和二极管之间的节点，并且被配置为经由采样开关选择性地在电感器和二极管之间的节点处采样电压，并使用采样信号产生稳定斜坡以稳定输出 。
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7.发明授权公开(公告)号：US07834603B2
公开(公告)日：2010-11-16
申请号：US12124752
申请日：2008-05-21
申请人： Vijay Mangtani , Weiyun Chen , Ravi Vig
发明人： Vijay Mangtani , Weiyun Chen , Ravi Vig
摘要： An electronic circuit combines a synchronous switching regulator circuit with an overvoltage detection circuit. The overvoltage detection circuit is configured to generate an overvoltage signal capable of an overvoltage state indicative of a power supply voltage being above a predetermined threshold voltage. The switching regulator circuit is coupled to receive the overvoltage signal. The switching regulator is also configured, in response to the overvoltage signal being in the overvoltage state, to generate a first control signal resulting in at least one of two series coupled transistors being in an off condition.
摘要翻译： 电子电路将同步开关调节器电路与过电压检测电路相结合。 过电压检测电路被配置为产生能够表示电源电压高于预定阈值电压的过电压状态的过电压信号。 开关稳压器电路被耦合以接收过电压信号。 开关调节器还被配置为响应于过电压信号处于过电压状态，以产生第一控制信号，导致两个串联耦合晶体管中的至少一个处于关断状态。
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公开(公告)号：US07812577B2
公开(公告)日：2010-10-12
申请号：US12291992
申请日：2008-11-14
申请人： Fred O. Barthold
发明人： Fred O. Barthold
CPC分类号： H02M3/155 , H02M2003/1557
摘要： A Single Ended Primary Inductance Converter (SEPIC) fed BUCK converter includes: a first switch configured to open or close according to a first signal; a SEPIC portion coupled to the first switch and coupled to an energy source, the SEPIC portion comprising a first set of one or more passive components; a BUCK converter portion coupled to the first switch, the BUCK converter portion comprising a second set of one or more passive components. While the first switch is closed, the SEPIC portion is configured to store energy from an energy source in at least some of the first set of passive components and deliver energy to the BUCK portion, and the BUCK converter portion is configured to deliver energy to a load and to store energy in at least some of the second set of passive components. While the first switch is open, the SEPIC portion is configured to deliver at least some of its stored energy to the load, and the BUCK converter portion is configured to deliver at least some of its stored energy to the load.
摘要翻译： 馈送BUCK转换器的单端初级电感转换器（SEPIC）包括：第一开关，被配置为根据第一信号打开或关闭; 耦合到第一开关并耦合到能量源的SEPIC部分，所述SEPIC部分包括第一组一个或多个无源部件; 所述BUCK转换器部分耦合到所述第一开关，所述BUCK转换器部分包括第二组一个或多个无源部件。 当第一开关闭合时，SEPIC部分被配置为在第一组无源部件中的至少一些中存储来自能量源的能量，并将能量传递到BUCK部分，并且BUCK转换器部分被配置为将能量传递到 加载并将能量存储在第二组无源组件中的至少一些中。 当第一开关打开时，SEPIC部分被配置为将其存储的能量中的至少一部分传送到负载，并且BUCK转换器部分被配置为将其存储的能量中的至少一些传送到负载。
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公开(公告)号：US07808218B2
公开(公告)日：2010-10-05
申请号：US12266122
申请日：2008-11-06
申请人： Jingwei Xu , Jian Liang
发明人： Jingwei Xu , Jian Liang
摘要： One embodiment of the invention includes a power regulator system. The system comprises an error amplifier that provides an error voltage based on a comparison of a reference voltage and a feedback voltage associated with an output voltage of the power regulator system. The system also comprises a pulse-width modulation (PWM) comparator configured to generate a switching signal that controls activation and deactivation of at least one power switch. The PWM comparator defining a duty-cycle of the switching signal based on the error voltage. The system further comprises a current limit circuit configured to clamp the error voltage upon the error voltage exceeding a voltage limit having a magnitude that varies as a function of the duty-cycle to provide a predetermined current limit that is substantially fixed independent of the duty-cycle.
摘要翻译： 本发明的一个实施例包括功率调节器系统。 该系统包括误差放大器，其基于参考电压和与功率调节器系统的输出电压相关联的反馈电压的比较来提供误差电压。 该系统还包括脉冲宽度调制（PWM）比较器，其被配置为产生控制至少一个功率开关的激活和去激活的切换信号。 PWM比较器基于误差电压定义开关信号的占空比。 该系统还包括电流限制电路，其配置成在误差电压超过具有作为占空比的函数而变化的幅度的电压极限时钳位误差电压，以提供基本上固定的预定电流极限， 周期。
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公开(公告)号：US07638993B2
公开(公告)日：2009-12-29
申请号：US11767082
申请日：2007-06-22
申请人： Gianluca Valentino
发明人： Gianluca Valentino
CPC分类号： H02M3/157
摘要： A method of feedback controls a switched regulator generating a regulated voltage on an output terminal and being driven by a pulse width modulated (PWM) signal that determines on-phases during which the output terminal is selectively connected to a supply line, and off-phases during which the output terminal is disconnected according to a pulse skipping mode. The method may include comparing the regulated voltage with a reference voltage, and during the on-phase of the PWM signal, selectively connecting or disconnecting the supply line to the output terminal based upon the comparing for keeping the regulated voltage constant. The method may also include incrementing, decrementing, or leaving unchanged a duty-cycle of the PWM signal at every PWM cycle also based upon the comparing.
摘要翻译： 反馈的方法控制在输出端子上产生调节电压并由脉冲宽度调制（PWM）信号驱动的开关调节器，该脉冲宽度调制（PWM）信号确定输出端子选择性地连接到电源线的同相，并且异相 在此期间，输出端子根据脉冲跳过模式被断开。 该方法可以包括将调节电压与参考电压进行比较，并且在PWM信号的同相期间，基于用于保持调节电压恒定的比较，选择性地将电源线连接或断开到输出端子。 该方法还可以基于比较来增加，减少或保持PWM信号在每个PWM周期的占空比。
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