专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07675276B2 DC/DC converter 有权
标题翻译： DC / DC转换器
公开(公告)号：US07675276B2
公开(公告)日：2010-03-09
申请号：US11915105
申请日：2006-05-08
申请人： Satoru Ohkawa , Norimasa Hane , Takeshi Naka
发明人： Satoru Ohkawa , Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/40 , G05F1/56
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A DC/DC converter includes a main switching element and a subordinate switching element, and is arranged to supply power to load via a coil. The ON-time of a subordinate switching element in a succeeding cycle is controlled based on a period of time tdif from the time when the subordinate switching element is turned off until the time when voltage at the point of connection of the two switching elements reaches a predetermined threshold value.
摘要翻译： DC / DC转换器包括主开关元件和从属开关元件，并且被布置成经由线圈向负载供电。基于从下属开关元件断开的时间到两个开关元件的连接点的电压达到时间的时间tdif来控制下一个开关元件在接下来的周期中的接通时间预定阈值。

2. 发明授权

US07545129B2 Switching power supply circuit 有权
标题翻译：开关电源电路
公开(公告)号：US07545129B2
公开(公告)日：2009-06-09
申请号：US11810390
申请日：2007-06-05
申请人： Norimasa Hane , Takeshi Naka
发明人： Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/40
CPC分类号： H02M3/158
摘要： A switching power supply circuit comprises: current detection means for detecting a current flowing through an inductor; current holding means for holding the current flowing through the inductor over a past predetermined period; and current superposition means for adding to an output of an error amplifier a current superposition signal which makes an adjustment, based on a present current information signal as an output signal of the current detection means, such that the ON-period of a switching signal of a PWM comparator is shortened, and also makes an adjustment, based on a past current information signal as an output signal of the current holding means, such that the ON-period of the switching signal of the PWM comparator is lengthened.
摘要翻译：开关电源电路包括：电流检测装置，用于检测流过电感器的电流; 电流保持装置，用于保持在过去的预定周期内流过电感器的电流; 以及电流叠加装置，用于根据作为电流检测装置的输出信号的当前信息信号，将误差放大器的输出加上进行调整的电流叠加信号，使得开关信号的接通周期 PWM比较器被缩短，并且还基于作为电流保持装置的输出信号的过去的电流信息信号进行调整，使得PWM比较器的开关信号的接通周期被延长。

3. 发明申请

US20090079410A1 DC/DC Converter 有权
标题翻译： DC / DC转换器
公开(公告)号：US20090079410A1
公开(公告)日：2009-03-26
申请号：US11915105
申请日：2006-05-08
申请人： Satoru Ohkawa , Norimasa Hane , Takeshi Naka
发明人： Satoru Ohkawa , Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/46
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A DC/DC converter includes a main switching element and a subordinate switching element, and is arranged to supply power to load via a coil. The ON-time of a subordinate switching element in a succeeding cycle is controlled based on a period of time tdif from the time when the subordinate switching element is turned off until the time when voltage at the point of connection of the two switching elements reaches a predetermined threshold value.
摘要翻译： DC / DC转换器包括主开关元件和从属开关元件，并且被布置成经由线圈向负载供电。基于从下属开关元件断开的时间到两个开关元件的连接点的电压达到时间的时间tdif来控制下一个开关元件在接下来的周期中的接通时间预定阈值。

4. 发明授权

US07135844B2 Control circuit for DC/DC converter 有权
标题翻译： DC / DC转换器控制电路
公开(公告)号：US07135844B2
公开(公告)日：2006-11-14
申请号：US10832468
申请日：2004-04-27
申请人： Norimasa Hane , Satoru Ohkawa , Takeshi Naka
发明人： Norimasa Hane , Satoru Ohkawa , Takeshi Naka
IPC分类号： G05F1/56
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： A control circuit for a DC/DC converter which includes a main switching element, a sub switching element, and a reactor in order to convert a DC input voltage to a DC output voltage. The control circuit comprises a clock signal generator for generating a clock signal during a blank period in which both the main and sub switching elements are off; a comparator for comparing a reference voltage and a voltage at a connection point between the main and sub switching elements and for outputting a comparison signal indicating a relation of magnitude between the reference voltage and the voltage at the connection point; and an operation mode switching section for monitoring the comparison signal at a timing corresponding to the clock signal in order to detect a voltage state at the connection point, and controlling the sub switching element in accordance with the voltage state.
摘要翻译：一种用于DC / DC转换器的控制电路，其包括主开关元件，副开关元件和电抗器，以将DC输入电压转换为DC输出电压。控制电路包括时钟信号发生器，用于在主开关元件和次开关元件都断开的空白期间产生时钟信号; 比较器，用于比较主和次开关元件之间的连接点处的参考电压和电压，并输出表示参考电压与连接点处电压之间的关系的比较信号; 以及操作模式切换部分，用于在对应于时钟信号的定时监视比较信号，以便检测连接点处的电压状态，并根据电压状态控制子开关元件。

5. 发明授权

US07638994B2 Switching power supply circuit 有权
标题翻译：开关电源电路
公开(公告)号：US07638994B2
公开(公告)日：2009-12-29
申请号：US11810348
申请日：2007-06-05
申请人： Norimasa Hane , Takeshi Naka
发明人： Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/56
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching power supply circuit has a current mode control circuit including current detection means, and current mode signal generation means for generating a current mode signal being a drain current of a first MOS transistor obtained by supplying a first current information signal, which is an output signal of the current detection means, to the gate of the first MOS transistor, and by connecting a first resistance to the source of the first MOS transistor, and supplies the current mode signal to a feedback control system of the switching power supply circuit.
摘要翻译：开关电源电路具有包括电流检测装置的电流模式控制电路，以及电流模式信号产生装置，用于产生作为输出的第一电流信息信号获得的第一MOS晶体管的漏极电流的电流模式信号，该第一电流信息信号是输出电流检测装置的信号输出到第一MOS晶体管的栅极，并且通过将第一电阻连接到第一MOS晶体管的源极，并将电流模式信号提供给开关电源电路的反馈控制系统。

6. 发明申请

US20080007235A1 Switching power supply circuit 有权
标题翻译：开关电源电路
公开(公告)号：US20080007235A1
公开(公告)日：2008-01-10
申请号：US11810390
申请日：2007-06-05
申请人： Norimasa Hane , Takeshi Naka
发明人： Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/00
CPC分类号： H02M3/158
摘要： A switching power supply circuit comprises: current detection means for detecting a current flowing through an inductor; current holding means for holding the current flowing through the inductor over a past predetermined period; and current superposition means for adding to an output of an error amplifier a current superposition signal which makes an adjustment, based on a present current information signal as an output signal of the current detection means, such that the ON-period of a switching signal of a PWM comparator is shortened, and also makes an adjustment, based on a past current information signal as an output signal of the current holding means, such that the ON-period of the switching signal of the PWM comparator is lengthened.
摘要翻译：开关电源电路包括：电流检测装置，用于检测流过电感器的电流; 电流保持装置，用于保持在过去的预定周期内流过电感器的电流; 以及电流叠加装置，用于根据作为电流检测装置的输出信号的当前信息信号，将误差放大器的输出加上进行调整的电流叠加信号，使得开关信号的接通周期 PWM比较器被缩短，并且还基于作为电流保持装置的输出信号的过去的电流信息信号进行调整，使得PWM比较器的开关信号的接通周期被延长。

7. 发明申请

US20080007233A1 Switching power supply circuit 有权
标题翻译：开关电源电路
公开(公告)号：US20080007233A1
公开(公告)日：2008-01-10
申请号：US11810348
申请日：2007-06-05
申请人： Norimasa Hane , Takeshi Naka
发明人： Norimasa Hane , Takeshi Naka
IPC分类号： G05F1/00
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching power supply circuit has a current mode control circuit including current detection means, and current mode signal generation means for generating a current mode signal being a drain current of a first MOS transistor obtained by supplying a first current information signal, which is an output signal of the current detection means, to the gate of the first MOS transistor, and by connecting a first resistance to the source of the first MOS transistor, and supplies the current mode signal to a feedback control system of the switching power supply circuit.
摘要翻译：开关电源电路具有包括电流检测装置的电流模式控制电路，以及电流模式信号产生装置，用于产生作为输出的第一电流信息信号获得的第一MOS晶体管的漏极电流的电流模式信号，该第一电流信息信号是输出电流检测装置的信号输出到第一MOS晶体管的栅极，并且通过将第一电阻连接到第一MOS晶体管的源极，并将电流模式信号提供给开关电源电路的反馈控制系统。

8. 发明授权

US08143873B2 Step-up switching power supply circuit 有权
标题翻译：升压开关电源电路
公开(公告)号：US08143873B2
公开(公告)日：2012-03-27
申请号：US12552659
申请日：2009-09-02
申请人： Norimasa Hane
发明人： Norimasa Hane
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M1/36
摘要： A step-up switching power supply circuit is provided. Within a delay period immediately after start of operation, a switching element (SW2) is subjected to constant-current control by a switching control signal (E) of a constant-current source buffer circuit (9). Control is also effected such that during halt of control for a stepping-up action in this circuit, or within the delay period, when an output voltage (VOUT) VIN, the switching element (SW3) is brought into the OFF state, and simultaneously, the switching element (SW4) is brought into the ON state, and after a lapse of the delay period, the switching element (SW3) is in the OFF state, and the switching element (SW4) is in the ON state, no matter which of the output voltage (VOUT) and the input voltage (VIN) is higher when compared by a comparator (12).
摘要翻译：提供了一种升压开关电源电路。在开始动作后的延迟时间内，通过恒流源缓冲电路（9）的切换控制信号（E）对开关元件（SW2）进行恒流控制。还进行控制，使得在停止对该电路中的升压动作的停止期间，或者在延迟时段内，当输出电压（VOUT）<输入电压（VIN），开关元件（SW3））进入 ON状态，同时使开关元件（SW4）处于OFF状态，或者当VOUT> VIN时，开关元件（SW3）进入截止状态，同时使开关元件（SW4）带入进入导通状态，经过延迟时间后，开关元件（SW3）处于截止状态，开关元件（SW4）处于导通状态，无论输出电压（VOUT）和当比较器（12）进行比较时，输入电压（VIN）较高。

9. 发明申请

US20090033305A1 PWM/PFM Control Circuit and Switching Power Supply Circuit 有权
标题翻译： PWM / PFM控制电路和开关电源电路
公开(公告)号：US20090033305A1
公开(公告)日：2009-02-05
申请号：US11866729
申请日：2007-10-03
申请人： Norimasa Hane
发明人： Norimasa Hane
IPC分类号： G05F1/618
CPC分类号： H02M3/156 , H02M1/08
摘要： A PWM/PFM control circuit has a differential time generating means for forming a differential time signal representing a differential time corresponding to a difference between the pulse width of a PWM control signal and the pulse width of a PFM control signal on condition that the pulse width of the PWM control signal is smaller than the pulse width of the PFM control signal, and the oscillation frequency of a reference signal serving as a reference for forming the PWM control signal is controlled based on the differential time signal to a low value in accordance with the differential time.
摘要翻译： PWM / PFM控制电路具有差分时间产生装置，用于形成表示与PWM控制信号的脉冲宽度和PFM控制信号的脉冲宽度之间的差对应的差分时间的差分时间信号，条件是脉冲宽度 PWM控制信号的脉冲宽度小于PFM控制信号的脉冲宽度，并且作为用于形成PWM控制信号的基准的参考信号的振荡频率根据差分时间信号被控制为低值差分时间。

10. 发明申请

US20110204867A1 Switching Power Supply Circuit 有权
标题翻译：开关电源电路
公开(公告)号：US20110204867A1
公开(公告)日：2011-08-25
申请号：US13033821
申请日：2011-02-24
申请人： Norimasa Hane
发明人： Norimasa Hane
IPC分类号： G05F1/56
CPC分类号： H02M3/1563
摘要： A switching power supply circuit comprises: a comparator for comparing a reference voltage, which is an output signal of a reference voltage generation circuit, with a feedback voltage, and outputting a set signal when a difference between the reference voltage and the feedback voltage exceeds a predetermined threshold value; an ON-time generation circuit for generating an ON-time signal for defining a period of time during which a switching element is kept ON; and a flip-flop circuit which turns on or off the switching element by the set signal and turns off or on the switching element by the ON-time signal. The reference voltage generation circuit has a first reference power supply for generating a first reference voltage, a second reference power supply for generating a second reference voltage (
摘要翻译：开关电源电路包括：比较器，用于将作为参考电压产生电路的输出信号的参考电压与反馈电压进行比较，并且当参考电压和反馈电压之间的差超过a时，输出设定信号预定阈值接通时间生成电路，用于产生用于定义开关元件保持接通的时间段的接通时间信号; 以及触发器电路，其通过设定信号接通或断开开关元件，并通过接通时间信号使开关元件断开或关断。参考电压产生电路具有用于产生第一参考电压的第一参考电源，用于产生第二参考电压（<第一参考电压）的第二参考电源，电容器，电阻器和开关装置，并且被控制为在开关元件的截止期间，开关装置处于截止状态，并且基准电压逐渐增加。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式