公开(公告)号：US20150249387A1

公开(公告)日：2015-09-03

申请号：US14711995

申请日：2015-05-14

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Toshio NAGASAWA ,  Yoshitaka ONAYA ,  Koji SAIKUSA ,  Shin CHIBA

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/156 ,  H02M3/1584 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A power-supply apparatus according to an aspect includes an inductor, a transistor that supplies, in an on-state, a current to the input side of the inductor, a second transistor that becomes, when the first transistor is in an off-state, an on-state and thereby brings the input side of the inductor to a predetermined potential, a signal generation unit that generates voltage signals corresponding to a current flowing to the inductor, an amplifier that outputs a current according to the voltage signals, a converter that converts the current output from the amplifier into a voltage signal, and a control unit that controls the transistors based on a first feedback signal corresponding to the voltage on the output side of the inductor and the voltage signal, which is used as a second feedback signal.

Abstract translation: 根据本发明的电源装置包括电感器，晶体管，其将导通状态的电流提供给电感器的输入侧;第二晶体管，当第一晶体管处于截止状态时， 导通状态，从而使电感器的输入侧达到预定电位;产生与流过电感的电流相对应的电压信号的信号产生单元，根据电压信号输出电流的放大器;转换器 其将来自放大器的电流输出转换为电压信号，以及控制单元，其基于与电感器的输出侧上的电压和电压信号相对应的第一反馈信号来控制晶体管，该电压信号用作第二反馈 信号。

公开(公告)号：US20140152282A1

公开(公告)日：2014-06-05

申请号：US14084590

申请日：2013-11-19

Applicant: Renesas Electronics Corporation

Inventor： Kyoichi HOSOKAWA ,  Ryotaro KUDO ,  Toshio NAGASAWA ,  Koji TATENO

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  G05F1/44 ,  H02M7/538 ,  H03F3/217 ,  H03F2200/351 ,  H03F2200/78 ,  H03K17/063 ,  H03K17/687 ,  Y02B70/1466

Abstract: In a switching power source which controls a current which flows in an inductor through a switching element which performs a switching operation in response to a PWM signal, and forms an output voltage by a capacitor which is provided in series in the inductor, a booster circuit which is constituted of a bootstrap capacity and a MOSFET is provided between an output node of the switching element and a predetermined voltage terminal. The boosted voltage is used as an operational voltage of a driving circuit of the switching element, another source/drain region and a substrate gate are connected with each other, and a junction diode between one source/drain region and the substrate gate is inversely directed with respect to the boosted voltage which is formed by the bootstrap capacity.

Abstract translation: 在开关电源中，其通过响应于PWM信号进行开关动作的开关元件来控制在电感器中流动的电流，并且通过串联设置在电感器中的电容器形成输出电压， 在开关元件的输出节点和预定的电压端子之间设置由自举电容构成的MOSFET和MOSFET。 升压电压用作开关元件的驱动电路的工作电压，另一个源极/漏极区域和衬底栅极彼此连接，并且在一个源极/漏极区域和衬底栅极之间的结二极管被反向导向 相对于由自举容量形成的升压电压。

公开(公告)号：US20140032942A1

公开(公告)日：2014-01-30

申请号：US13953306

申请日：2013-07-29

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Yuji TAKEHARA ,  Koji SAIKUSA ,  Ryotaro KUDO ,  Toshio NAGASAWA

IPC: H02M3/156 ,  G06F1/26

CPC classification number: H02M3/156 ,  G06F1/26 ,  H02M3/1584 ,  H02M2001/0019

Abstract: A voltage regulator has a voltage converter circuit and a control unit. The control unit controls the voltage converter circuit so that an output voltage attains a target voltage when the voltage regulator is in a no-load condition so as to have a transition characteristic in which the output voltage decreases with increase in the load current. The control unit calculates deviation between the output voltage and an ideal value thereof when a load condition of the voltage regulator is a first load condition, and corrects the target voltage by the output voltage adjustment unit. so The control unit also calculates deviation between rate of change of the output voltage with respect to the load current and an ideal value thereof, and corrects the transition characteristic so that the deviation becomes small to minimize deviation.

Abstract translation: 电压调节器具有电压转换器电路和控制单元。 控制单元控制电压转换器电路，使得当电压调节器处于空载状态时，输出电压达到目标电压，从而具有输出电压随着负载电流的增加而降低的转变特性。 当电压调节器的负载条件为第一负载条件时，控制单元计算输出电压与其理想值之间的偏差，并且通过输出电压调节单元校正目标电压。 因此，控制单元还计算输出电压相对于负载电流的变化率和理想值之间的偏差，并且校正转移特性使得偏差变小以使偏差最小化。

公开(公告)号：US20140191737A1

公开(公告)日：2014-07-10

申请号：US14096499

申请日：2013-12-04

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Toshio NAGASAWA ,  Yoshitaka ONAYA ,  Koji SAIKUSA ,  Shin CHIBA

IPC: H02M3/158 ,  H02M3/156

CPC classification number: H02M3/158 ,  H02M3/156 ,  H02M3/1584 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: A power-supply apparatus according to an aspect includes an inductor, a transistor that supplies, in an on-state, a current to the input side of the inductor, a second transistor that becomes, when the first transistor is in an off-state, an on-state and thereby brings the input side of the inductor to a predetermined potential, a signal generation unit that generates voltage signals corresponding to a current flowing to the inductor, an amplifier that outputs a current according to the voltage signals, a converter that converts the current output from the amplifier into a voltage signal, and a control unit that controls the transistors based on a first feedback signal corresponding to the voltage on the output side of the inductor and the voltage signal, which is used as a second feedback signal.

Abstract translation: 根据本发明的电源装置包括电感器，晶体管，其将导通状态的电流提供给电感器的输入侧;第二晶体管，当第一晶体管处于截止状态时， 导通状态，从而使电感器的输入侧达到预定电位;产生与流过电感的电流相对应的电压信号的信号产生单元，根据电压信号输出电流的放大器;转换器 其将来自放大器的电流输出转换为电压信号，以及控制单元，其基于与电感器的输出侧上的电压和电压信号相对应的第一反馈信号来控制晶体管，该电压信号用作第二反馈 信号。