公开(公告)号：US20140173302A1

公开(公告)日：2014-06-19

申请号：US14187502

申请日：2014-02-24

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Ryotaro KUDO ,  Tomoaki UNO ,  Koji TATENO ,  Hideo ISHII ,  Kazuyuki UMEZU ,  Koji SAIKUSA

IPC: H02M3/158 ,  G06F1/26

CPC classification number: H02M3/158 ,  G06F1/26 ,  H02M3/1584 ,  H02M2003/1586

Abstract: Miniaturization of a multiphase type power supply device can be achieved. A power supply control unit in which, for example, a microcontroller unit, a memory unit and an analog controller unit are formed over a single chip, a plurality of PWM-equipped drive units, and a plurality of inductors configure a multiphase power supply. The microcontroller unit outputs clock signals each having a frequency and a phase defined based on a program on the memory unit to the respective PWM-equipped drive units. The analog controller unit detects a difference between a voltage value of a load and a target voltage value acquired via a serial interface and outputs an error amp signal therefrom. Each of the PWM-equipped drive units drives each inductor by a peak current control system using the clock signal and the error amp signal.

Abstract translation: 可以实现多相电源装置的小型化。 电源控制单元，其中例如在单个芯片上形成微控制器单元，存储单元和模拟控制器单元，多个配备PWM的驱动单元和多个电感器构成多相电源。 微控制器单元输出每个具有基于存储器单元上的程序定义的频率和相位到相应的配备有PWM的驱动单元的时钟信号。 模拟控制器单元检测负载的电压值与通过串行接口获取的目标电压值之间的差值，并输出误差放大器信号。 每个配备PWM的驱动单元通过使用时钟信号和误差放大器信号的峰值电流控制系统驱动每个电感器。

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：US20140035551A1

公开(公告)日：2014-02-06

申请号：US13793480

申请日：2013-03-11

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Ryotaro KUDO

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H01L24/34 ,  H01L24/37 ,  H01L24/40 ,  H01L24/48 ,  H01L24/73 ,  H01L2224/32245 ,  H01L2224/371 ,  H01L2224/37147 ,  H01L2224/40095 ,  H01L2224/40245 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/73221 ,  H01L2224/73265 ,  H01L2224/83801 ,  H01L2224/8385 ,  H01L2224/84801 ,  H01L2224/8485 ,  H01L2924/00014 ,  H01L2924/12032 ,  H01L2924/1306 ,  H01L2924/13091 ,  H01L2924/14 ,  H01L2924/181 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/3025 ,  H02M3/1584 ,  H01L2924/00 ,  H01L2924/00012 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207

Abstract: The present invention realized miniaturization of a power supply device using a multiphase system. The power supply device includes, for example, a common control unit, a plurality of PWM-equipped drive units, and a plurality of inductors. The common control unit outputs clock signals respectively different in phase to the PWM-equipped drive units. The clock signals are controllable in voltage state individually respectively. For example, the clock signal can be brought to a high impedance state. In this case, the PWM-equipped drive unit detects this high impedance state and stops its own operation. It is thus possible to set the number of phases in multiphase arbitrarily without using another enable signal or the like.

Abstract translation: 本发明实现了使用多相系统的电源装置的小型化。 电源装置包括例如公共控制单元，多个配有PWM的驱动单元和多个电感器。 公共控制单元输出与PWM配备的驱动单元分别不同相位的时钟信号。 时钟信号分别在电压状态下可控。 例如，时钟信号可以变为高阻抗状态。 在这种情况下，配备PWM的驱动单元检测该高阻抗状态并停止其自身的操作。 因此，可以在不使用另一使能信号等的情况下任意设定多相的相数。