公开(公告)号：US20170279316A1

公开(公告)日：2017-09-28

申请号：US15508536

申请日：2015-10-06

Applicant: Panasonic Intellectual Property Management Co. Ltd.

Inventor： TAKASHI INOUE ,  HIROSHI YAJIMA ,  SHINICHIRO ITO ,  KATSUYA HAGIWARA

IPC: H02J50/80 ,  H02J50/10 ,  H02J7/00 ,  H02J7/04

CPC classification number: H02J50/80 ,  H01M2/105 ,  H01M10/48 ,  H02J7/0042 ,  H02J7/0091 ,  H02J7/025 ,  H02J7/047 ,  H02J50/10

Abstract: A battery-embedded device includes a substrate having a wiring, a coil fixed to the substrate, a battery fixed to the substrate, and a first temperature detecting element that is disposed on the substrate and configured to detect a temperature of the battery. An occupancy rate of the wiring in a first region of the substrate which is immediately below the first temperature detecting element is lower than an occupancy rate of the wiring in a second region of the substrate other than the first region.

公开(公告)号：US20150357917A1

公开(公告)日：2015-12-10

申请号：US14763279

申请日：2014-01-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： MASASHI OKAMATSU ,  HIDEKI TANAKA ,  KATSUYA HAGIWARA ,  MASAHIRO TOCHIGI ,  TAKASHI UEDA

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/1582 ,  H02M2001/0006

Abstract: A DC-DC converter includes first and second switching devices electrically connected in series between an input terminal and a ground terminal, third and fourth switching devices electrically connected in series between an output terminal and the ground terminal, an inductor, a drive circuit that drives the first switching device to turn on and off, a bootstrap capacitor circuit connected electrically to the drive circuit, and a control circuit. The control circuit is operable to turn on and off the switching devices serially connected with each other after a simultaneous-off duration for which both of the switching devices are continuously turned off. The control circuit is operable to charge the bootstrap capacitor by continuously turning on keeping the second switching device for a charging duration while continuously turning off the first switching device for a sustaining duration determined by the simultaneous-off duration and the charging duration. This DC-DC converter can reduce a current ripple even when the bootstrap capacitor is charged.

Abstract translation: DC-DC转换器包括串联地电连接在输入端子和接地端子之间的第一和第二开关装置，串联地电连接在输出端子和接地端子之间的第三和第四开关装置，电感器，驱动电路 第一开关装置接通和断开，与驱动电路电连接的自举电容电路和控制电路。 控制电路可操作以在两个开关装置连续断开的同时关断持续时间之后导通和断开彼此串联的开关装置。 所述控制电路可操作以通过在连续地打开所述第二开关装置一个充电持续时间的同时对所述自举电容器进行充电，同时连续地关闭所述第一开关装置持续由所述同时关断持续时间和所述充电持续时间确定的持续时间。 即使自举电容充电，该DC-DC转换器也可以减小电流纹波。