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公开(公告)号：US20070126409A1
公开(公告)日：2007-06-07
申请号：US11634655
申请日：2006-12-04
IPC分类号： G05F1/00
CPC分类号： H02M1/38 , H02M3/3376
摘要： A device and method for driving a converter circuit that supplies a charge via a first electronic switch and a second electronic switch alternately turned on and off. A generator module generates a memory signal, indicating the duration of a first dead-time interval. A delay module, sensitive to the memory signal controls turning-on of the first electronic switch with a delay, with respect to turning-off of the second electronic switch, so that a second dead-time interval has a duration substantially equal to the duration of the first dead-time interval.
摘要翻译： 用于驱动经由第一电子开关和第二电子开关提供电荷的转换器电路的装置和方法交替地导通和关断。 发生器模块产生指示第一死区间隔的持续时间的存储器信号。 相对于第二电子开关的断开，对存储器信号敏感的延迟模块控制第一电子开关的导通，延迟，使得第二死区间隔的持续时间基本上等于持续时间 的第一个死时间间隔。
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22.发明授权Control of the output power of a DC-DC converter upon varying the switching frequency 失效改变开关频率时控制DC-DC转换器的输出功率
公开(公告)号：US6011706A
公开(公告)日：2000-01-04
申请号：US55639
申请日：1998-04-06
CPC分类号： H04N3/185 , H02M3/33523
摘要： The power output of a static DC--DC converter employing a current mode PWM controller is controlled upon the varying of the switching frequency, by detecting the sawtooth signal produced by the local oscillator generating a DC signal with an amplitude inversely proportional to the frequency. The power output is controlled by alternatively clamping the output voltage of the error amplifier of the PWM controller at a voltage proportional to the amplitude of the DC signal, or by offsetting the signal present on the current sensing resistor by a voltage corresponding to the difference between a constant voltage and the DC signal.
摘要翻译： 采用电流模式PWM控制器的静态DC-DC转换器的功率输出通过检测由本地振荡器产生的具有与频率成反比的DC信号产生的锯齿波信号来控制开关频率的变化。 功率输出通过将PWM控制器的误差放大器的输出电压交替钳位在与DC信号的幅度成比例的电压下，或者通过将存在于电流感测电阻器上的信号抵消与 恒定电压和直流信号。
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公开(公告)号：US10439508B2
公开(公告)日：2019-10-08
申请号：US13191282
申请日：2011-07-26
申请人： Claudio Adragna
发明人： Claudio Adragna
摘要： A control device controls a switching converter having an input alternating supply voltage and a regulated direct voltage at the output terminal. The converter comprises a switch and the control device is adapted to control the on time period and the off time period of said switch for each cycle. The control device has a first input signal representative of the current flowing through at least one element of the converter and comprises a zero crossing detector adapted to detect at least one pair of first and second zero crossings of said first signal for each switching cycle, said second zero crossing immediately following the first zero crossing and occurring in opposite direction with respect to the first zero crossing. The control device comprises a synchronizer adapted to synchronize the start of the on period with each second zero crossing of said first signal.
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24.发明授权公开(公告)号：US09143046B2
公开(公告)日：2015-09-22
申请号：US13416656
申请日：2012-03-09
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A control device that controls a switching circuit and minimizes hard switching that occurs in the switching circuit of a half-bridge resonant converter having a high-side transistor and a low-side transistor. The control device is configured to turn the high-side and low-side transistor on and, so that a square-wave voltage is applied to a primary winding of a transformer. The controller starts the switching of the half-bridge converter by first turning on the low-side transistor for a first time period useful for pre-charging a bootstrap capacitor couplable to the middle point of the half-bridge, and then turning the low-side transistor and the high-side transistor off for a second time period that immediately follows and is longer than the first time period.
摘要翻译： 控制装置，其控制切换电路，并且使具有高侧晶体管和低侧晶体管的半桥谐振变换器的开关电路中发生的硬开关最小化。 控制装置被配置为使高侧和低侧晶体管导通，并且使得方波电压被施加到变压器的初级绕组。 控制器开始半桥转换器的切换，首先将低侧晶体管接通第一时间段，这对于预充电到可以连接到半桥的中点的自举电容器进行预充电， 并且高侧晶体管关闭紧随着第二时间段并且比第一时间段长。
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25.发明授权Control device of the switching frequency of a quasi-resonant switching converter and related control method 有权准谐振开关转换器开关频率的控制装置及相关控制方法公开(公告)号：US08867237B2
公开(公告)日：2014-10-21
申请号：US13433083
申请日：2012-03-28
申请人： Silvio Desimone , Claudio Adragna
发明人： Silvio Desimone , Claudio Adragna
CPC分类号： H02M3/3381 , H02M1/44 , H02M2001/0058 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
摘要： A control device for a QR switching power converter is described; said power converter is adapted to convert an input signal to a DC output signal and comprises a power switch connected to said input signal and adapted to regulate said DC output signal and magnetic storage means. The control device is able to determine the switching frequency of the power switch and it is supplied by a feedback signal deriving from a feedback circuit coupled to the output signal of the power converter; said control device performs a control loop regulating the DC output signal by controlling a control variable. The control device comprises modulating means adapted to modulate said control variable as a function of at least one modulating signal having a frequency higher than the control loop bandwidth.
摘要翻译： 描述了用于QR切换功率转换器的控制装置; 所述功率转换器适于将输入信号转换成DC输出信号，并且包括连接到所述输入信号并适于调节所述DC输出信号和磁存储装置的电源开关。 控制装置能够确定电源开关的开关频率，并且通过从耦合到功率转换器的输出信号的反馈电路得到的反馈信号来提供该开关频率; 所述控制装置通过控制控制变量来执行调节DC输出信号的控制回路。 控制装置包括调制装置，其适于根据至少一个具有高于控制回路带宽的频率的调制信号来调制所述控制变量。
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公开(公告)号：US20130329470A1
公开(公告)日：2013-12-12
申请号：US13990394
申请日：2011-12-19
申请人： Alberto Stroppa , Claudio Spini , Claudio Adragna
发明人： Alberto Stroppa , Claudio Spini , Claudio Adragna
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0032 , Y02B70/16
摘要： A control device controls a switching circuit of a DC-DC converter. The switching circuit includes a half-bridge with at least first and second switches connected between an input voltage and a reference voltage. The converter comprises a transformer with a primary coupled with the center point of the half-bridge and a secondary coupled with a load. The control device comprises an error detector configured to determine an error signal representing a difference between a first signal representative of the voltage across the load and a first reference signal and a frequency controller configured to increase the switching frequency of the half-bridge when the error signal is kept below a second signal.
摘要翻译： 控制装置控制DC-DC转换器的开关电路。 开关电路包括具有连接在输入电压和参考电压之间的至少第一和第二开关的半桥。 该转换器包括一个与半桥的中心点初级耦合的变压器，以及与负载耦合的二次变压器。 控制装置包括误差检测器，其被配置为确定表示代表负载两端的电压的第一信号与第一参考信号之间的差的误差信号，以及配置为当误差增加半桥的开关频率时的频率控制器 信号保持低于第二信号。
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公开(公告)号：US08604643B2
公开(公告)日：2013-12-10
申请号：US12336185
申请日：2008-12-16
IPC分类号： H02J1/00
CPC分类号： H02M3/1584 , H02J1/102 , H02M2001/0048 , Y02B70/1491 , Y10T307/406 , Y10T307/555 , Y10T307/707
摘要： A control device of a plurality of switching converters is disclosed; each converter comprises at least one power switch and is associated with a control circuit of the at least one power switch. The control device comprises means suitable for comparing a signal representative of the load of the plurality of converters with a plurality of reference signals and suitable for enabling or disabling at least one of said plurality of control circuits in response to said comparison.
摘要翻译： 公开了一种多个开关变换器的控制装置， 每个转换器包括至少一个电源开关并与所述至少一个电源开关的控制电路相关联。 控制装置包括适于将表示多个转换器的负载的信号与多个参考信号进行比较的装置，并且适合于响应于所述比较启用或禁用所述多个控制电路中的至少一个。
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公开(公告)号：US08391026B2
公开(公告)日：2013-03-05
申请号：US12789113
申请日：2010-05-27
IPC分类号： H02M3/335
CPC分类号： H02M1/36 , H02M3/3376 , H02M2001/0048 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A resonant dc-dc converter converts dc input voltage to a dc output voltage. The converter includes switching, switching driving, conversion, and disabling circuits. The switching circuit receives the input voltage and generates a square wave voltage oscillating between the input voltage and a low value, at a frequency with a duty cycle. The switching driving circuit drives the switching circuit and includes a timing circuit for setting the frequency and the duty cycle. The timing circuit sets the value of the duty cycle to about 50% when the converter operates in steady state. The conversion circuit generates the output voltage from the square wave voltage based on the frequency and the duty cycle. The disabling circuit temporarily halts the timing circuit after a power on in such a way to temporarily vary the duty cycle of the square wave voltage during a period of the square wave voltage.
摘要翻译： 谐振式dc-dc转换器将直流输入电压转换为直流输出电压。 该转换器包括开关，开关驱动，转换和禁用电路。 开关电路接收输入电压，并以占空比的频率产生在输入电压和低值之间振荡的方波电压。 开关驱动电路驱动开关电路，并且包括用于设定频率和占空比的定时电路。 当转换器工作在稳态时，定时电路将占空比的值设置为约50％。 转换电路根据频率和占空比从方波电压产生输出电压。 禁止电路在上电之后暂时停止定时电路，以便在方波电压的周期期间临时改变方波电压的占空比。
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29.发明授权Switching power supply system for optical sources or a load requiring a controlled supply current 有权用于光源的开关电源系统或需要受控供电电流的负载公开(公告)号：US08330389B2
公开(公告)日：2012-12-11
申请号：US12643883
申请日：2009-12-21
申请人： Claudio Adragna
发明人： Claudio Adragna
IPC分类号： H05B37/02
CPC分类号： H02M1/4225 , H02M1/44 , H02M3/3376 , H02M2001/007 , H05B33/0815 , H05B33/0848 , Y02B20/347 , Y02B70/126 , Y02B70/1433
摘要： A switching power supply for supplying a load requiring a controlled current includes a PFC pre-regulator for receiving an input voltage and providing an output voltage, and a DC-DC switching converter for receiving at input the voltage output by the pre-regulator and for providing at output a supply voltage of said load. The switching DC-DC converter operates at a fixed and constant operating frequency, is a resonant converter and includes an LLC resonant circuit.
摘要翻译： 用于提供需要受控电流的负载的开关电源包括用于接收输入电压并提供输出电压的PFC预调节器，以及DC-DC开关转换器，用于在输入端接收预调节器输出的电压， 在输出端提供所述负载的电源电压。 开关DC-DC转换器工作在固定和恒定的工作频率，是谐振转换器，并且包括一个LLC谐振电路。
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30.发明授权Isolated voltage converter with feedback on the primary winding and passive snubber network, and corresponding control method 有权在初级绕组和无源缓冲网络上具有反馈的隔离电压转换器及相应的控制方法公开(公告)号：US08270184B2
公开(公告)日：2012-09-18
申请号：US12324412
申请日：2008-11-26
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M2001/0032 , Y02B70/16
摘要： An embodiment of a voltage converter, provided with: a voltage transformer having a primary winding receiving an input voltage, a secondary winding supplying an output voltage, and an auxiliary winding supplying a feedback voltage correlated to the output voltage; a main switch, coupled to the primary winding; a control circuit, which controls switching of the main switch and has a sampling stage for sampling and holding the feedback voltage and supplying a sampled signal; and a voltage limiting circuit, provided with a clamp capacitor, designed to be coupled across the primary winding. A sampling control stage is coupled to the sampling stage, and is designed, during a given operating condition of the voltage converter, to enable updating of the sampled signal on the basis of a state of charge of the clamp capacitor.
摘要翻译： 一种电压转换器的实施例，其具有：具有接收输入电压的初级绕组的电压互感器，提供输出电压的次级绕组和提供与所述输出电压相关的反馈电压的辅助绕组; 主开关，耦合到初级绕组; 控制电路，其控制主开关的切换，并具有用于采样和保持反馈电压并提供采样信号的采样级; 以及设置有钳位电容器的电压限制电路，设计成跨过初级绕组耦合。 采样控制级耦合到采样级，并且在电压转换器的给定操作条件期间被设计为能够基于钳位电容器的充电状态来更新采样信号。
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