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    • 1. 发明公开
    • DC-DC컨버터
    • DC / DC转换器
    • KR1020080026125A
    • 2008-03-24
    • KR1020077030705
    • 2005-09-06
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 니시야마타카요시타케무라히로시우에키코이치
    • H02M3/28
    • H02M3/337H02M2001/0058Y02B70/1433Y02B70/1491
    • A DC/DC converter comprising a zero-voltage switching resonant coil (Lr) connected in series to a primary winding (Np); and a full bridge type switching circuit that is driven by a phase shift control; wherein a first regenerative diode (D7) is provided between an end of an input power supply (Vin) and a junction between the primary winding (Np) and the resonant coil (Lr), while a second regenerative diode (D8) is provided between the other end of the input power supply (Vin) and the same junction. Because of this arrangement, a surge, which is caused by the reverse recovery currents of rectifying diodes (D1,D2) on the secondary side, is regenerated in the input power supply via the regenerative diodes (D7,D8) to reduce the surge voltage to be applied to the rectifying diodes (D1,D2). As a result, low-breakdown rectifying diodes, the forward voltage drops of which are small, can be employed. Additionally, the loss, which is caused by the forward currents of the rectifying diodes, can be reduced. Moreover, the loss in the regenerative diodes (D7,D8) is smaller than the loss in a case where a snubber circuit is provided on the secondary side. ® KIPO & WIPO 2008
    • 包括与初级绕组(Np)串联连接的零电压开关谐振线圈(Lr)的DC / DC转换器; 以及由相移控制驱动的全桥型开关电路; 其中在第一再生二极管(D8)设置在输入电源(Vin)的端部与初级绕组(Np)和谐振线圈(Lr)之间的结点之间,而第二再生二极管 输入电源(Vin)的另一端和同一个接点。 由于这种布置,由次级侧的整流二极管(D1,D2)的反向恢复电流引起的浪涌通过再生二极管(D7,D8)在输入电源中再生,以降低浪涌电压 施加到整流二极管(D1,D2)。 因此,可以采用正向压降小的低击穿整流二极管。 此外,可以减少由整流二极管的正向电流引起的损耗。 此外,再生二极管(D7,D8)中的损耗小于在次级侧设置缓冲电路的情况下的损耗。 ®KIPO&WIPO 2008
    • 2. 发明公开
    • 스위칭 전원장치
    • 切换电源单元
    • KR1020060029204A
    • 2006-04-05
    • KR1020057013437
    • 2004-11-08
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 호소타니타츠야타케무라히로시
    • H02M3/28H02M3/24
    • H02M3/33576H02M3/33561H02M3/33569
    • A first switching control circuit (CNT1), triggered by a timing when a rectifier diode (Ds1) enters a nonconducting state and a transformer voltage Vt is inverted, turns on a first switching element (Q1) after specified delay time. A second switching control circuit (CNT2), triggered by a timing when the first switching element (Q1) is turned off and the transformer voltage Vt is inverted, turns on a second switching element (Q2). A third switching control circuit (CNT3), triggered by a timing when the second switching element (Q2) is turned off, turns on a third switching element (Q3). The (CNT1) determines the interval ton1 of the first switching element (Q1) such that a first output voltage Vo1 has a specified value, the (CNT2) determines the on-interval ton2 of the second switching element (Q2) such that a second output voltage Vo2 has a specified value, and the (CNT3) determines the on-interval ton3 of the third switching element (Q3) such that a third output voltage Vo3 has a specified value.
    • 由整流二极管(Ds1)进入非导通状态并且变压器电压Vt反相的定时触发的第一开关控制电路(CNT1)在规定的延迟时间之后导通第一开关元件(Q1)。 第二开关控制电路(CNT2)由第一开关元件(Q1)截止的定时和变压器电压Vt反相触发,导通第二开关元件(Q2)。 由第二开关元件(Q2)截止的定时触发的第三开关控制电路(CNT3)导通第三开关元件(Q3)。 (CNT1)确定第一开关元件(Q1)的间隔ton1,使得第一输出电压Vo1具有指定值,(CNT2)确定第二开关元件(Q2)的接通间隔ton2,使得第二开关元件 输出电压Vo2具有指定值,并且(CNT3)确定第三开关元件(Q3)的接通时间间隔ton3,使得第三输出电压Vo3具有指定值。
    • 3. 发明公开
    • 전원장치
    • 供电单元
    • KR1020060103499A
    • 2006-10-02
    • KR1020067006508
    • 2005-05-17
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 우노요시유키니시다아키오타케무라히로시
    • H02M3/28
    • H02M3/155H02M7/17H02M7/2176Y10T307/696
    • A power supply device is provided with a main power supply circuit (11) and a sub power supply circuit (14) connected to an alternating current (AC). The main power supply circuit (11) is provided with a full-wave rectifying circuit (D1) and an input current control circuit (12) generally equivalent to a high frequency current control circuit. The input current control circuit (12) is provided with a resistor (R1) which is a circuit current detecting means, and a control circuit (13) which detects a current flowing in the resistor (R1) and controls a switch (Q1). The circuits are connected to permit a current flowing in a diode (D3), which is a second rectifying circuit for the sub power supply circuit (14), to return to the alternating power supply through the resistor (R1).
    • 电源装置设置有连接到交流电(AC)的主电源电路(11)和副电源电路(14)。 主电源电路(11)设置有全波整流电路(D1)和大体相当于高频电流控制电路的输入电流控制电路(12)。 输入电流控制电路(12)设置有电路(R1),其是电路电流检测装置,以及控制电路(13),其检测在电阻器(R1)中流动的电流并控制开关(Q1)。 电路被连接以允许在作为副电源电路(14)的第二整流电路的二极管(D3)中流动的电流通过电阻器(R1)返回到交流电源。
    • 4. 发明公开
    • 스위칭 전원장치
    • 切换电源设备
    • KR1020060035583A
    • 2006-04-26
    • KR1020057017147
    • 2004-11-30
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 호소타니타츠야타케무라히로시
    • H02M3/28H02M3/24
    • H02M3/33569
    • A first inductor (Lr) is connected in series with the primary winding (Lp) of a transformer (T) and a second inductor (Li) is provided in such a manner that the sinusoidal wave voltage of a capacitor (Ca) produced by rectifying an AC input voltage is applied during the ON period of a first switch circuit (S1). Moreover, there are provided a diode (Di) for blocking reverse current to the second inductor (Li) and a capacitor (Ci) charged with exciting energy stored in the second inductor (Li) and applying a voltage to the primary winding (Lp) during the ON period of the first switch circuit (S1). Furthermore, a capacitor (Cr) is provided to constitute a closed loop together with the inductor (Lr), the primary winding (Lp) and a second switch circuit (S2). Switching control circuits (SC1, SC2) control the output voltage Vo by controlling the ON period of a first switching element (Q1) and the input voltage Vi by the ON period of a second switching element (Q2).
    • 第一电感器(Lr)与变压器(T)的初级绕组(Lp)串联连接,第二电感器(Li)以这样的方式设置,使得通过整流产生的电容器(Ca)的正弦波电压 在第一开关电路的导通期间施加AC输入电压(S1)。 此外,提供了用于阻断到第二电感器(Li)的反向电流的二极管(Di)和充满存储在第二电感器(Li)中的激发能量并且向初级绕组(Lp)施加电压的电容器(Ci) 在第一开关电路的导通期间(S1)。 此外,提供电容器(Cr)以与电感器(Lr),初级绕组(Lp)和第二开关电路(S2)一起构成闭环。 开关控制电路(SC1,SC2)通过将第一开关元件(Q1)的导通时间和输入电压Vi控制在第二开关元件(Q2)的导通时段来控制输出电压Vo。
    • 7. 发明公开
    • 스위칭 전원장치
    • 切换电源单元
    • KR1020060086841A
    • 2006-08-01
    • KR1020057016689
    • 2005-01-25
    • 가부시키가이샤 무라타 세이사쿠쇼
    • 타케무라히로시니시다아키오
    • H02M1/36H02M3/28
    • H02M1/4258H02M2001/007Y02B70/126
    • A switching power supply comprising a primary rectifier circuit (Da) connected with a commercial power supply (E) and outputting a primary unsmoothed DC voltage (va), a transformer (T1) having a primary coil (N1) and a secondary coil (N2), a switching element (Q1) connected in series with the output of the primary rectifier circuit (Da) together with the primary coil (N1) for switching the primary unsmoothed DC voltage (va), a secondary rectifier circuit (diode D1) connected with the secondary coil (N2) and outputting a secondary unsmoothed DC voltage (vb), and an inverter circuit (Inv) connected with the output of the secondary rectifier circuit. The output of the switching power supply is supplied to a discharge lamp (Lamp).
    • 一种开关电源,包括与商用电源(E)连接的初级整流电路(Da),并输出初级未平滑的直流电压(va);变压器(T1),其具有初级线圈(N1)和次级线圈 ),与一次整流电路(Da)的输出端串联连接的初级线圈(N1)与用于切换初级未平滑的直流电压(va)的开关元件(Q1),连接的次级整流电路(二极管D1) 与次级线圈(N2)并输出二次未平滑的直流电压(vb),以及与次级整流电路的输出端连接的逆变器电路(Inv)。 开关电源的输出被提供给放电灯(灯)。