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    • 7. 发明申请
    • FEED FORWARD CURRENT MODE SWITCHING REGULATOR WITH IMPROVED TRANSIENT RESPONSE
    • 具有改善的瞬态响应的前馈电流模式开关稳压器
    • WO2014077958A3
    • 2014-10-09
    • PCT/US2013062357
    • 2013-09-27
    • LINEAR TECHN INC
    • MANLOVE GREGORYGU YI DINGLI JIAN
    • H02M3/156G05F1/10
    • H02M3/156G05F1/10G05F1/562H02M1/32H02M3/142H02M3/158H02M2001/0019H02M2001/0025
    • A switching regulator circuit incorporates an offset circuit, connected in a control loop of the regulator circuit, that, in response to a signal indicating an imminent load current step, adjusts a duty cycle of a power switch for the current step prior to the regulator circuit responding to a change in output voltage due to the current step. In one embodiment, a load controller issues a digital signal shortly before a load current step. The digital signal is decoded and converted to an analog offset signal in a feedback control loop of the regulator to immediately adjust a duty cycle of the switch irrespective of the output voltage level. By proper timing of the offset, output voltage ripple is greatly reduced. The current offset may also be used to rapidly change the output voltage in response to an external signal requesting a voltage step.
    • 开关调节器电路包括连接在调节器电路的控制回路中的偏移电路,其响应于指示即将发生的负载电流步长的信号,在调节器电路之前调节用于当前步骤的电源开关的占空比 响应由于当前步骤引起的输出电压的变化。 在一个实施例中,负载控制器在负载电流步骤之前不久发出数字信号。 数字信号在调节器的反馈控制环路中被解码并转换为模拟偏移信号,以立即调整开关的占空比,而不管输出电压电平如何。 通过适当的偏移时序,输出电压纹波大大降低。 响应于请求电压阶跃的外部信号,电流偏移还可以用于快速改变输出电压。
    • 8. 发明专利
    • Chopper apparatus
    • CHOPPER APPARATUS
    • JPS5768663A
    • 1982-04-27
    • JP14297280
    • 1980-10-15
    • Toshiba Corp
    • NOMURA HIROYUKIHIRATA KATSUHEIFUKAZAWA KATSUMI
    • H02H7/12H02M3/142
    • H02M3/142
    • PURPOSE:To prevent erroneous detection due to mutual interference by a method wherein a logical product signal between an output voltage detecting signal and an operation command signal is used as an output voltage detecting signal for a chopper circuit from which an operation command signal is being outputted. CONSTITUTION:Output voltage detecting signals (C), (D) of first and second chopper circuits 3-1, 3-2 are inputted into (J) terminal and (K) terminal individually, and a logical products between them and operation command signals, 3, 4 issued from a reference signal generating circut 21 is taken with AND circuits 22-3, 22-4. And detecting signals 14, 15 obtained from (N) terminal and (P) terminal are inputted into a fault detecting circuit, and fault state of a chopper circuit is detected. Consequently for example because the detecting signal 14 does not contain an output voltage from the second chopper's side due to mutual interference when compared with a detecting signal 11 from (J) terminal, erroneous detection in abnormal condition of the chopper circuit can be prevented.
    • 目的:为了防止由于相互干扰而导致的错误检测,其中使用输出电压检测信号和操作命令信号之间的逻辑积信号作为用于输出操作命令信号的斩波电路的输出电压检测信号 。 构成:第一和第二斩波电路3-1,3-2的输出电压检测信号(C),(D)分别输入到(J)端子和(K)端子,并且它们之间的逻辑积和操作命令信号 从参考信号产生环路21发出的3,4与AND电路22-3,22-4相连。 从(N)端子和(P)端子获得的检测信号14,15被输入故障检测电路,并检测斩波电路的故障状态。 因此,例如因为与来自(J)端子的检测信号11相比,检测信号14由于相互干扰而不包含来自第二斩波器侧的输出电压,因此可以防止斩波电路的异常状态的错误检测。
    • 9. 发明专利
    • Constant voltage regulated power supply circuit
    • 恒定电压调节电源
    • JPS5734219A
    • 1982-02-24
    • JP10904980
    • 1980-08-07
    • Matsushita Electric Ind Co Ltd
    • HORI FUMIO
    • H02M1/08G05F1/56H02M3/142
    • H02M3/142
    • PURPOSE:To reduce the production loss and price of a phase angle controlling type power supply circuit using a thyrister by opening the conduction angle of the thyrister at the increase of a load to prevent the output voltage from being reduced. CONSTITUTION:If voltage obtained by comparing base voltage due to a Zener diode D5 with output voltage to control the output voltage is applied to an emitter of a transistor Q2, one-round closed circuit with negative feedback function is formed. When load current is increased and the output voltage of terminals 3 and 4 is reduced, the collector current of a comparison transistor Q1 is reduced, so that the electric conduction period of the level comparison transistor Q2 is prolonged, a thyrister SCR1 or SCR2 is conducted for longer period and large quantities of current flows into a capacitor C1. Thus, the output voltage is increased, obtaining constant voltage characteristics to maintain the voltage decided by the base voltage and resistances R1 and R2.
    • 目的:通过在负载增加时打开可控硅的导通角来减少使用可控硅的相位角控制型电源电路的生产损耗和价格,以防止输出电压降低。 构成:如果通过将齐纳二极管D5的基极电压与输出电压进行比较来控制输出电压而获得的电压被施加到晶体管Q2的发射极,则形成具有负反馈功能的单向闭合电路。 当负载电流增加并且端子3和4的输出电压降低时,比较晶体管Q1的集电极电流减小,使得电平比较晶体管Q2的导电时间延长,可控硅SCR1或SCR2导通 对于较长的周期和大量的电流流入电容器C1。 因此,输出电压增加,获得恒定的电压特性以维持基极电压和电阻R1和R2所决定的电压。