-
公开(公告)号：EP1578011B1
公开(公告)日：2007-02-07
申请号：EP03811495.5
申请日：2003-11-06
发明人： ISHII, Takuya , IKEDA, Masaharu , AKASHI, Hiroki
IPC分类号： H03F3/217
CPC分类号： H03F3/2173 , H03F1/0211 , H03F1/3205 , H03F2200/331
摘要： A power amplifying apparatus of switching type for performing, with a high degree of efficiency, a power amplification of input AC signals, such as an acoustic signal and the like, has first (11) and second (12) switch circuits to which a power supply voltage (Vc) is supplied; an inductor (13) and a load (14) that are connected between those switch circuits; and a control circuit (15) that receives an input AC signal (Vi), sets a predetermined ratio of ON interval to OFF interval, and drives the switch circuits. The control circuit (15) includes a calculating circuit (20) that multiplies a modulation sensitivity (e.g., the amplitude of a triangular wave voltage during production of a pulse signal for driving the switch circuits) by a ratio of the power supply voltage (Vc) to a DC component (Ec) thereof (Vc/Ec), and then outputs the resultant amplified value. This configuration compensates for distortion due to a ripple variation of the power supply voltage caused by a regenerative power or the like, and allows an adjustment of amplification factor by use of the power supply voltage.
-
公开(公告)号：EP1578011A1
公开(公告)日：2005-09-21
申请号：EP03811495.5
申请日：2003-11-06
发明人： ISHII, Takuya , IKEDA, Masaharu , AKASHI, Hiroki
IPC分类号： H03F3/217
CPC分类号： H03F3/2173 , H03F1/0211 , H03F1/3205 , H03F2200/331
摘要： A power amplifying apparatus which is of a switching type and capable of efficiently amplifying a power of an input AC signal such as an acoustic signal, includes a first switch circuit (11) and a second switch circuit (12) to which a power supply voltage Vc is applied, an inductor (13) and a load (14) which are connected between the switch circuits, and a control circuit (15) which receives an input AC signal Vi, sets a predetermined ratio of ON/OFF periods, and drives the switch circuits. The control circuit (15) includes an arithmetic circuit (20) which multiplies a modulation sensitivity (for example, an amplitude of a triangular wave voltage used for generation of a pulse signal for driving a switch circuit) by a ratio (Vc/Ec) of the power supply voltage Vc and a DC component Ec thereof. This configuration can compensate for distortion caused by a ripple variation of the power supply voltage due to regenerated power or the like, and enable a gain control by the power supply voltage.
-
3.发明公开DIRECT-CURRENT POWER SUPPLY AND BATTERY-POWERED ELECTRONIC APPARATUS EQUIPPED WITH THE POWER SUPPLY 审中-公开直流电源和配备有供电电池驱动的电子设备
公开(公告)号：EP1543599A1
公开(公告)日：2005-06-22
申请号：EP04771385.4
申请日：2004-08-02
IPC分类号： H02J7/00
CPC分类号： H02J7/0065 , H02M3/1582 , H02M2001/0022
摘要： A bypass control section (6) maintains a bypass switch (5) in the ON state during the period when a battery voltage (Vi) is higher than the output voltage (Vo) to an external load (L). Upon falling of the output voltage (Vo) at a desired voltage (ET), a converter control section (4) starts switching control at once, and a step-up chopper (3) promptly starts boost operation. The bypass control section (6) maintains the bypass switch (5) in the ON state from the start of the boost operation of the step-up chopper (3) until the match between the battery voltage (Vi) and the output voltage (Vo).
-
公开(公告)号：EP1427093A1
公开(公告)日：2004-06-09
申请号：EP02765428.4
申请日：2002-09-05
IPC分类号： H02M3/28
CPC分类号： H02M3/1584 , H02M3/1582 , H02M2001/007 , H02M2001/009
摘要： In order to supply controlled DC voltages to a plurality of loads at high efficiency by using smaller number of components, a multiple output DC-DC converter in accordance with the present invention comprises a first main switch 21, one terminal of which is connected to the negative electrode of an input DC power source 1, a first rectifying means 51 and a first smoothing means 61 connected to the other terminal of the first main switch 21, a second main switch 22, one terminal of which is connected to the positive terminal of the input DC power source 1, a second rectifying means 52 and a second smoothing means 62 connected to the other terminal of the second main switch 22, an inductor 31 connected between the other terminal of the first main switch 21 and the other terminal of the second main switch 22, and a control circuit 81 for driving the respective switches at predetermined ON/OFF period ratios.
摘要翻译： 为了通过使用较少数量的部件以高效率向多个负载提供受控直流电压，根据本发明的多输出DC-DC转换器包括第一主开关21，其一个端子连接到 输入直流电源1的负极，第一整流装置51和连接到第一主开关21的另一端的第一平滑装置61，第二主开关22，其一端连接到 连接到第二主开关22的另一个端子的输入直流电源1，第二整流装置52和第二平滑装置62，连接在第一主开关21的另一个端子和第二主开关22的另一个端子之间的电感器31 第二主开关22和用于以预定的ON / OFF周期比率驱动各个开关的控制电路81。
-
公开(公告)号：EP1361649A1
公开(公告)日：2003-11-12
申请号：EP02790748.4
申请日：2002-12-12
发明人： ISHII, Takuya , SAITO, Hiroshi
IPC分类号： H02M3/155
CPC分类号： H02M3/1582
摘要： A method for controlling a voltage step-up and step-down typed DC-DC converter that receives input of a direct current voltage such as a battery and supplies a controlled direct current voltage to a load is simplified.
It comprises a voltage step-down converter section consisting of a first switch 2, a first rectifying means 3 and an inductor 4, a voltage step-up converter section consisting of an inductor 4, a second switch 5 and a second rectifying means 6, and a control section consisting of an output capacitor 7, an error amplifying circuit 10, an oscillation circuit 11 and a pulse width control circuit 12, and ratio of a rising period or lowering period of an oscillation voltage Vt changes as the input and output voltage ratio becomes small in the step-down operation mode, and as the input and output voltage ratio becomes large in the voltage step-up operation mode, whereby the oscillation voltage Vt from the oscillation circuit 11 is compared with an error voltage Ve from the error amplifying circuit 10 and the duty ratio of each switch is adjusted to control the operation of voltage step-down, voltage step-up and step-down, and voltage step-up.摘要翻译： 用于控制接收诸如电池的直流电压的输入并将受控的直流电压提供给负载的升压和降压型DC-DC转换器的控制方法被简化。 它包括由第一开关2，第一整流装置3和电感器4组成的降压转换器部分，由电感器4，第二开关5和第二整流装置6组成的升压转换器部分， 以及由输出电容器7，误差放大电路10，振荡电路11和脉冲宽度控制电路12组成的控制部分，并且振荡电压Vt的上升周期或下降周期的比率随着输入和输出电压 比率在降压操作模式下变小，并且随着升压操作模式中输入和输出电压比变大，由此将来自振荡电路11的振荡电压Vt与来自误差的误差电压Ve进行比较 放大电路10和每个开关的占空比被调节以控制降压，升压和降压以及升压的操作。
-
公开(公告)号：EP1381135A1
公开(公告)日：2004-01-14
申请号：EP02720447.8
申请日：2002-04-17
发明人： HANDA, Hiroyuki , ISHII, Takuya , NAKAJIMA, Yasufumi , BITO, Yasuhiko , KASAMATSU, Shinji , NITTA, Yoshiaki
CPC分类号： H02J7/0065 , H02M3/155 , H02M3/1582
摘要： The present invention provides a battery-driven electronic device for which a long time use of the battery can be achieved and mobile communications equipment such as a portable telephone. Even if the time at which the output voltage of a battery 201 becomes below the supply voltage required by a load 206 including a power amplifier for wireless communications comes earlier than a conventional lithium ion battery because of its discharge characteristics that the battery voltage change ratio is 0.25 or more, a step-up and -down converter 200 operates as follows. When the output voltage of the battery is higher than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-down operation mode. When the output voltage of the battery is decreased and becomes lower than the supply voltage required by the load, the voltage is set to a predetermined supply voltage by the step-up operation mode. Thus, even for a battery employing a new material having a high energy density, a long term use of the battery can be achieved.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.012 秒)
