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1. 发明专利

JP2007226638A Power source selection detection circuit 有权
标题翻译：电源选择检测电路
公开(公告)号：JP2007226638A
公开(公告)日：2007-09-06
申请号：JP2006048547
申请日：2006-02-24
申请人： Nec Electronics Corp , Necエレクトロニクス株式会社
发明人： NISHIKATA YASUE
IPC分类号： G05F1/00 , H02J9/06
CPC分类号： G06F1/263 , Y10T307/549 , Y10T307/696 , Y10T307/724 , Y10T307/735 , Y10T307/858
摘要： PROBLEM TO BE SOLVED: To provide a power source selection detection circuit wherein current consumption is reduced. SOLUTION: This power source selection detection circuit in a power source circuit wherein one main power source is selected from a plurality of external power sources has: a resistance element having one end connected to the external power source and the other end connected to the main power source to the plurality of external power sources; a second voltage detection circuit having a first voltage detection circuit setting a voltage of the external power source as input and detecting the voltage of the external power source, and detecting a voltage between one end and the other end of the resistance element to at least one external power source; and a switch connected between the external power source and ground, short-circuiting and opening connection between the external power source and the ground according to output of the second voltage detection circuit. Thereby, erroneous detection of the voltage by the first voltage detection circuit can be prevented. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种电流消耗降低的电源选择检测电路。解决方案：电源电路中的一个主电源选自多个外部电源的电源选择检测电路具有：电阻元件，其一端连接到外部电源，另一端连接到多个外部电源的主要电源; 第二电压检测电路，其具有将外部电源的电压设定为输入并检测外部电源的电压的第一电压检测电路，以及将电阻元件的一端与另一端之间的电压检测为至少一个外部电源; 以及连接在外部电源和地之间的开关，根据第二电压检测电路的输出，外部电源与地之间的短路和断开连接。从而可以防止第一电压检测电路对电压的错误检测。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2009303382A Triangular-wave generating circuit and switching regulator 审中-公开
标题翻译：三角波发生电路和开关稳压器
公开(公告)号：JP2009303382A
公开(公告)日：2009-12-24
申请号：JP2008154835
申请日：2008-06-13
申请人： Nec Electronics Corp , Necエレクトロニクス株式会社
发明人： NISHIKATA YASUE
IPC分类号： H02M3/155
CPC分类号： H02M3/156 , H03K4/06 , H03K7/08
摘要： PROBLEM TO BE SOLVED: To provide a switching regulator that improves output-voltage accuracy and transient response characteristics by reducing ripples.
SOLUTION: The switching regulator maintains an output voltage at an almost fixed level by using a first comparator that compares a power supply voltage with an output voltage of the switching regulator, a triangular-wave forming circuit that changes the magnitude of amplitude of a triangular wave in accordance with an output signal of the first comparator, and a triangular wave generated by the triangular-wave forming circuit.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过减少波纹来提高输出电压精度和瞬态响应特性的开关稳压器。解决方案：开关调节器通过使用将电源电压与开关调节器的输出电压进行比较的第一比较器将输出电压维持在几乎固定的电平，三角波形成电路改变幅度的幅度根据第一比较器的输出信号的三角波和由三角波形成电路产生的三角波。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2010110030A Switching pulse generation circuit and switching regulator 审中-公开
标题翻译：切换脉冲发生电路和开关稳压器
公开(公告)号：JP2010110030A
公开(公告)日：2010-05-13
申请号：JP2008276417
申请日：2008-10-28
申请人： Nec Electronics Corp , Necエレクトロニクス株式会社
发明人： NISHIKATA YASUE
IPC分类号： H02M3/155
摘要： PROBLEM TO BE SOLVED: To suppress the disturbance of a waveform of an output voltage fed to a load caused by overcharging to a capacitor.
SOLUTION: This switching pulse generation circuit 10 is provided with: a pulse generation part 4 which generates an output pulse for controlling the feed state of a voltage to the load 105 connected to an output terminal; and an operation condition setting part 14 which sets the operation condition of the pulse generation part 4 so that the output pulse is narrowed in width by being associated with a start time for feeding the voltage to the load 105. The operation condition setting part 14 sets the operation condition of the pulse generation part 4 so that the width-narrowed pulse is outputted from the pulse generation part 4 by being associated with the start time for feeding the voltage to the load 105. Hence, the disturbance of the waveform of the output voltage fed to the load 105 caused by the overcharging to the capacitor 104 is effectively suppressed.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：抑制由给电容器过充电引起的对负载的输出电压的波形的干扰。解决方案：该开关脉冲发生电路10设置有：脉冲发生部分4，其生成用于控制连接到输出端子的负载105的电压的馈电状态的输出脉冲; 以及操作条件设定部14，其通过与向负载105供给电压的开始时间相关联，设定脉冲发生部4的运行状态，使输出脉冲宽度变窄。运转条件设定部14设定脉冲发生部分4的操作条件使得通过与将电压馈送到负载105的开始时间相关联，从脉冲发生部分4输出宽度变窄的脉冲。因此，输出波形的干扰有效地抑制了由对电容器104的过充电引起的对负载105的馈送电压。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2008295237A Switching pulse formation circuit and regulator using same 审中-公开
标题翻译：切换脉冲形成电路和使用相同的调节器
公开(公告)号：JP2008295237A
公开(公告)日：2008-12-04
申请号：JP2007139357
申请日：2007-05-25
申请人： Nec Electronics Corp , Necエレクトロニクス株式会社
发明人： NISHIKATA YASUE
IPC分类号： H02M3/155
CPC分类号： H02M3/156 , H05B33/0818 , H05B33/0851 , Y10T307/696
摘要： PROBLEM TO BE SOLVED: To solve the following problem: an average value of a load current becomes larger than a target load current. SOLUTION: A switching pulse forming circuit includes a load current setting unit in which a load current setting signal for setting a current running through a load is input from the outside and which determines an electric current running through the load based on the load current setting signal and a pulse generation unit which outputs a voltage supply pulse for supplying a voltage to the load and which determines a pulse width of the voltage supply pulse based on the load current setting signal. COPYRIGHT: (C)2009,JPO&INPIT

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