公开(公告)号：US09973017B2

公开(公告)日：2018-05-15

申请号：US14856376

申请日：2015-09-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ryotaro Kudo ,  Dongjin Keum ,  Yus Ko ,  Hyunseok Nam ,  Gwang-Yol Noh ,  Whanseok Seo ,  Jaeyoup Choi

IPC: H02J7/00

CPC classification number: H02J7/0068 ,  H02J7/0052 ,  H02J7/007

Abstract: A charger circuit includes a first path regulator, a path switch, and a second path regulator. The first path regulator is configured to generate a first regulation current based on an input voltage and an input current. The path switch is configured to pass or block a first charging current in response to a control signal. The first charging current is generated based on the first regulation current. The second path regulator is configured to generate a second regulation current based on the input voltage and the input current. At least one of the first charging current and a second charging current is used to charge a battery. The second charging current is generated based on the second regulation current. The second charging current is transferred to the battery without passing through the path switch.

公开(公告)号：US09641076B2

公开(公告)日：2017-05-02

申请号：US14589332

申请日：2015-01-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ryotaro Kudo ,  Gwang-yol Noh ,  Hwa-yeal Yu

IPC: H02M3/158 ,  H02M1/14

CPC classification number: H02M3/158 ,  H02M1/14 ,  H02M3/1588 ,  H02M2003/1586 ,  Y02B70/1466

Abstract: A switching regulator switches a current from input direct current (DC) power to generate target DC power. The switching regulator includes: a direct current (DC)-DC converter and a ripple injection circuit. The DC-DC converter is configured to: generate an output voltage at an output terminal based on an input voltage applied to an input terminal, and according to a switching cycle that selectively forms a voltage-down current path or a voltage-up current path based on a comparison between a reference voltage and a voltage sensed at a feedback node; and apply a feedback current from the output terminal to the feedback node. The ripple injection circuit is configured to: generate a pulse current synchronized with the switching cycle; and apply the pulse current to the feedback node.

公开(公告)号：US09705401B2

公开(公告)日：2017-07-11

申请号：US14742002

申请日：2015-06-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Min-Soo Cho ,  Jae-Yeol Han ,  Dong-Jin Keum ,  Il-Young Sohn ,  Ryotaro Kudo

IPC: H02M3/158 ,  H02M3/156

CPC classification number: H02M3/1582 ,  H02M3/1563

Abstract: A buck-boost converter includes: a converting circuit; a ripple injector; a hysteresis comparator; and a switching controller. The converting circuit is configured to generate an output voltage by adjusting an input voltage in a buck mode, a boost mode, and a buck-boost mode. The ripple injector is configured to generate a ripple based on switching signals corresponding to switching operations of the converting circuit. The hysteresis comparator outputs at least one switching control signal by comparing an output control voltage with a feedback voltage generated by adding the ripple to a divided voltage generated by performing a voltage division on the output voltage. The switching controller is configured to change a current flow path of the converting circuit based on the at least one switching control signal.