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1.发明授权公开(公告)号：US09520791B2
公开(公告)日：2016-12-13
申请号：US13798148
申请日：2013-03-13
发明人： Chin-Ho Wu , Ren-Yi Chen , Yi-Shan Chu
CPC分类号： H02M3/325 , H02M3/33507 , H02M2001/327
摘要： Power supplies and power controllers are disclosed. A disclosed power supply has a power controller, a power switch, an auxiliary winding, a first circuit and a second circuit. The power controller is a monolithic integrated circuit with a multi-function pin and a gate pin. A control node of the power switch is coupled to the gate pin. The first circuit is coupled between the multi-function pin and the auxiliary winding and has a diode. The second circuit is coupled between the multi-function pin and a ground line, and has a thermistor.
摘要翻译： 公开了电源和电源控制器。 所公开的电源具有功率控制器，电源开关，辅助绕组，第一电路和第二电路。 功率控制器是具有多功能引脚和栅极引脚的单片集成电路。 电源开关的控制节点耦合到栅极引脚。 第一电路耦合在多功能引脚和辅助绕组之间，并具有二极管。 第二电路耦合在多功能引脚和地线之间，并具有热敏电阻。
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公开(公告)号：US06909249B2
公开(公告)日：2005-06-21
申请号：US10732150
申请日：2003-12-09
申请人： Tetsushi Otake
发明人： Tetsushi Otake
CPC分类号： H05B33/0815 , H02J1/04 , H02M3/1563 , Y10T307/724 , Y10T307/729
摘要： Disclosed herein is a switching constant-current power supply which comprises: a switching-system power converter for supplying a predetermined current to a load; a current detector for generating a feedback signal in correspondence with the load current; a controller for driving the power converter in correspondence with the feedback signal; and a feedback circuit, which is provided between the current detector and the controller, and comprises a signal holding unit, the feedback circuit supplying either a first feedback signal, output from the current detector, or a second feedback signal, output from the signal holding unit, to the controller; the size of the second feedback signal being approximately equal to the first feedback signal at a given time.
摘要翻译： 本文公开了一种开关恒流电源，其包括：用于向负载提供预定电流的开关系统功率转换器; 用于产生与负载电流相对应的反馈信号的电流检测器; 用于与所述反馈信号相对应地驱动所述功率转换器的控制器; 以及反馈电路，其设置在电流检测器和控制器之间，并且包括信号保持单元，反馈电路提供来自电流检测器的第一反馈信号或从第一反馈信号输出的第二反馈信号， 单位，控制器; 在给定时间，第二反馈信号的大小近似等于第一反馈信号。
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公开(公告)号：US4246635A
公开(公告)日：1981-01-20
申请号：US950622
申请日：1978-10-12
申请人： Takeo Arima
发明人： Takeo Arima
摘要： A power supply device which boosts and stabilizes the voltage of a dc power supply includes an oscillator circuit connected to the dc power supply, a voltage multiplying rectifier circuit which rectifies the output of the oscillator circuit and boosts the voltage and an oscillator control circuit which monitors the boosted voltage and stabilizes the boosted voltage by on-off control of the oscillator circuit. The voltage multiplying rectifier circuit includes a voltage storage element, such as a capacitor connected in parallel with the load driven by the power-supply device. When the output voltage of the device exceeds a predetermined reference voltage, the oscillator control circuit turns the oscillator circuit off. The voltage storage element is thus no longer supplied with electric energy and begins to discharge through the load thereby lowering the output voltage of the device. When the ouput voltage falls below the predetermined reference voltage the oscillator control circuit turns the oscillator circuit on again to repeat the voltage stabilization cycle.
摘要翻译： 升压和稳定直流电源的电压的电源装置包括连接到直流电源的振荡器电路，对振荡器电路的输出进行整流和升压的倍压整流电路，以及监视 升压电压，并通过振荡器电路的开关控制稳定升压电压。 电压倍增整流电路包括电压存储元件，例如与由电源装置驱动的负载并联连接的电容器。 当器件的输出电压超过预定参考电压时，振荡器控制电路将关闭振荡器电路。 因此，电压存储元件不再具有电能并且开始通过负载放电，从而降低器件的输出电压。 当输出电压低于预定参考电压时，振荡器控制电路再次使振荡器电路再次导通，以重新进行稳压周期。
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公开(公告)号：US10116219B2
公开(公告)日：2018-10-30
申请号：US15263121
申请日：2016-09-12
发明人： Daoshen Chen , Heping Dai , Xujun Liu , Zhihua Liu , Liming Ye , Dianbo Fu , Ce Liu , Bing Cai
摘要： A method comprises connecting a first resonant converter and a second resonant converter in parallel, detecting a first signal indicating a first soft switching process of the first resonant converter and a second signal indicating a second soft switching process of the second resonant converter and adjusting a first switching frequency of the first resonant converter by a first control circuit and a second switching frequency of the second resonant converter by a second control circuit until a load current flowing through the first resonant converter is substantially equal to a load current flowing through the second resonant converter.
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公开(公告)号：US09866124B2
公开(公告)日：2018-01-09
申请号：US15011854
申请日：2016-02-01
发明人： Thomas Stamm
CPC分类号： H02M3/33515 , H02M1/42 , H02M7/217 , H05B33/0815 , Y02B20/347
摘要： A fly-back type switched current regulator includes a primary transformer winding coupled to receive a rectified DC signal derived from an AC signal. The drain of a power transistor is coupled to the primary winding, with the source of the power transistor coupled to an input of a comparison circuit and a primary transformer winding sense resistor. A control terminal of the power transistor is coupled to an output of the comparison circuit. A capacitor stores a variable reference signal for application at a first capacitor terminal to another input of the differential circuit. The variable reference signal is compared to a winding current signal generated by the sense resistor by the comparison circuit. An injection circuit applies an AC signal derived from the rectified DC signal to a second terminal of the capacitor so as to modulate the stored variable reference signal. The regulator is coupled to drive LEDs.
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公开(公告)号：US4253136A
公开(公告)日：1981-02-24
申请号：US860225
申请日：1977-12-13
申请人： Hideaki Nanko
发明人： Hideaki Nanko
CPC分类号： H02M3/33546 , H02M3/33523 , Y02B70/1433
摘要： A switching regulated power supply apparatus, comprising: an alternative current power source, a first rectifier for rectifying the alternate current output, a high frequency reference pulse generator, a pulse width modulator for modulating the pulse width of the reference pulse output as a function of a control signal, a switching transistor for on/off controlling the output from the first rectifier as a function of the pulse width modulated output, a high frequency transformer connected in series with the first rectifier and the switching transistor, a second rectifier for rectifying the output from the high frequency transformer, and a smoothing circuit for smoothing the output from the second rectifier, the output from the smoothing circuit being applied to the pulse width modulator as a control signal, characterized in that the said apparatus further comprises a resonance capacitor coupled to the said high frequency transformer for causing resonance cooperatively with the said high frequency transformer when the said switching transistor is turned off, and a switching device coupled to the output of the second rectifier to be turned on responsive to a flyback pulse obtained from the smoothing circuit when the switching transistor is turned off, whereby the said resonance is suppressed by means of the second rectifier and the switching device in the latter half cycle of the resonance during the off time period of the switching transistor.
摘要翻译： 一种开关稳压电源装置，包括：替代电流电源，用于整流交流输出的第一整流器，高频参考脉冲发生器，用于调制参考脉冲输出的脉冲宽度的脉冲宽度调制器，其作为 控制信号，用于开/关控制来自第一整流器的输出作为脉宽调制输出的函数的开关晶体管，与第一整流器和开关晶体管串联连接的高频变压器，用于对第一整流器进行整流的第二整流器 从高频变压器输出的平滑电路和用于平滑来自第二整流器的输出的平滑电路，来自平滑电路的输出作为控制信号施加到脉宽调制器，其特征在于，所述装置还包括耦合的谐振电容器 所述高频变压器与所述高频谐振器协同地引起共振 h变压器，当所述开关晶体管截止时，切换装置耦合到所述第二整流器的输出端，以响应于从所述平滑电路获得的回扫脉冲导通，由此所述谐振 在开关晶体管的截止时间期间在谐振的后半周期中借助于第二整流器和开关器件而被抑制。
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公开(公告)号：US4215296A
公开(公告)日：1980-07-29
申请号：US964720
申请日：1978-11-29
申请人： Ichiro Mitamura , Masayuki Yasumura
发明人： Ichiro Mitamura , Masayuki Yasumura
CPC分类号： H03K4/62
摘要： A television horizontal deflection circuit is provided with a flyback transformer and a switching regulator transformer which are substantially magnetically independent of each other and which are connected with their primaries in series with a switching device and a source of input voltage. The secondary winding of the switching regulator transformer supplies power to a regulated D.C. voltage supply, which in turn supplies power to a resonant circuit. The resonant circuit is connected to a reference potential through the switching device and includes a damper diode, a resonant capacitor, a deflection coil and a series connected capacitor. A secondary winding of the flyback transformer is used to derive a high voltage for use in the high voltage anode of a television picture tube. In a preferred embodiment, the flyback transformer contains an additional winding which is connected between the regulated D.C. voltage supply and the resonant circuit. This additional or feedback winding is inductively coupled with the primary winding of the flyback transformer so that the flow of current through that primary winding while the switching means is conductive will impede the flow of current from the regulated D.C. voltage supply to the resonant circuit.
摘要翻译： 电视水平偏转电路设置有回扫变压器和开关调节器变压器，它们基本上是磁性地彼此独立的，并且与其开关元件和输入电压源串联连接。 开关调节器变压器的次级绕组将电源供给到稳压的直流电源，该电源又向谐振电路供电。 谐振电路通过开关装置连接到参考电位，并包括阻尼二极管，谐振电容器，偏转线圈和串联电容器。 反激式变压器的次级绕组用于导出用于电视显像管的高压阳极的高电压。 在优选实施例中，回扫变压器包括连接在调节的直流电压源和谐振电路之间的附加绕组。 这个附加的或反馈的绕组与回扫变压器的初级绕组感应耦合，使得当开关装置导通时通过该初级绕组的电流的流动将阻止电流从调节的直流电压提供给谐振电路。
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公开(公告)号：US4128867A
公开(公告)日：1978-12-05
申请号：US733496
申请日：1976-10-18
申请人： Albert M. Heyman
发明人： Albert M. Heyman
CPC分类号： H02M3/3382 , H02M3/3378 , H02M2001/0006
摘要： A power supply provides a low-level DC voltage to one or more DC load circuits by first rectifying either of the two standard AC voltages and thereafter reducing the rectified AC voltage to the low-level DC voltage. The reduction of the rectified AC voltage to the low-level DC voltage is accomplished by a power transformer which is switched on or off by a pair of switching transistors. The switching transistors are activated by a control transformer operating in combination with a control circuit. The control circuit timely produces various pulse conditions in the control transformer which turns the switching transistors on or off in a prescribed manner.
摘要翻译： 电源通过首先对两个标准AC电压中的任一个进行整流，然后将整流的AC电压降低到低电平DC电压，来向一个或多个DC负载电路提供低电平的DC电压。 整流后的交流电压降低到低电平的直流电压是由一对开关晶体管导通或断开的电力变压器实现的。 开关晶体管由与控制电路组合操作的控制变压器激活。 控制电路在控制变压器中及时产生各种脉冲条件，以规定的方式接通或关断开关晶体管。
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9.发明授权Safety circuit for rapidly switching off oscillators, particularly transistor DC-DC converters, when the output voltages or output current exceed or full below the required values 失效当输出电压或输出电流超过或低于所需值时，用于快速关断振荡器，特别是晶体管DC-DC转换器的安全电路
公开(公告)号：US3863125A
公开(公告)日：1975-01-28
申请号：US34513573
申请日：1973-03-26
申请人： PHILIPS CORP
发明人： TOLLRIAN HERWIG , KRAHL BURGHARD
CPC分类号： H02H7/1213 , H02M3/3388
摘要： In a dc-dc converter using a transformer coupled oscillator a threshold switch connected to the dc output of the converter provides a control signal when the voltage and current output parameters exceed predetermined ranges. A thyristor and a resistor connected in series with the main current path of the thyristor are connected across the dc input to the converter and normally provide a high impedance path for an additional coil magnetically coupled to the transformer. The control signal from the threshold switch turns on the thyristor, providing a low impedance path for the coil and thereby interferring with the operation of the oscillator.
摘要翻译： 在使用变压器耦合振荡器的dc-dc转换器中，连接到转换器的直流输出的阈值开关在电压和电流输出参数超过预定范围时提供控制信号。 与晶闸管的主电流路径串联连接的晶闸管和电阻器跨越直流输入端连接到转换器，并且通常为与变压器磁耦合的附加线圈提供高阻抗路径。 来自阈值开关的控制信号打开晶闸管，为线圈提供低阻抗路径，从而干扰振荡器的工作。
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公开(公告)号：US10199943B2
公开(公告)日：2019-02-05
申请号：US15588399
申请日：2017-05-05
发明人： Yuan Lin , Zhiqiang Sun , Weihua Wang , Lieyi Fang
摘要： Systems and methods are provided for voltage regulation of power conversion systems. An example system controller includes: a first sampling component configured to sample a sensing signal and determine a compensation signal based on at least in part on the sensing signal, the sensing signal being associated with a first current flowing through a primary winding of a power conversion system; a signal processing component configured to receive a feedback signal and the compensation signal and generate a first signal based at least in part on the feedback signal and the compensation signal, the feedback signal being associated with an auxiliary winding coupled with a secondary winding of the power conversion system; an error amplifier configured to receive the first signal and a reference signal and generate an amplified signal based at least in part on the first signal and the reference signal.
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