公开(公告)号：US10205387B2

公开(公告)日：2019-02-12

申请号：US15838181

申请日：2017-12-11

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Wen-Chi Lin ,  Cheng-Ta Wu ,  Keng-Nan Chen

IPC: H02M3/07

Abstract: A charge pump circuit includes N boosting circuits, (N−2) switching circuits and a control circuit. A kth boosting circuit includes a unidirectional component and a capacitor. A positive terminal of the unidirectional component of the kth boosting circuit is electrically connected to a negative terminal of a unidirectional component of a (k−1)th boosting circuit. A first terminal of the capacitor of the kth boosting circuit is electrically connected to a negative terminal of the unidirectional component of the kth boosting circuit. A (2i−1)th switching circuit selectively conducts a current path from a (2i−1)th boosting circuit to a first clock terminal or to a ground terminal according to a control signal of the control circuit. A (2i)th switching circuit selectively conducts a current path from a (2i)th boosting circuit to a second clock terminal or to the ground terminal according to the control signal of the control circuit.

公开(公告)号：US20180166986A1

公开(公告)日：2018-06-14

申请号：US15838181

申请日：2017-12-11

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Wen-Chi Lin ,  Cheng-Ta Wu ,  Keng-Nan Chen

IPC: H02M3/07

CPC classification number: H02M3/07 ,  H02M3/073 ,  H02M2003/075

Abstract: A charge pump circuit includes N boosting circuits, (N-2) switching circuits and a control circuit. A kth boosting circuit includes a unidirectional component and a capacitor. A positive terminal of the unidirectional component of the kth boosting circuit is electrically connected to a negative terminal of a unidirectional component of a (k-1)th boosting circuit. A first terminal of the capacitor of the kth boosting circuit is electrically connected to a negative terminal of the unidirectional component of the kth boosting circuit. A (2i-1)th switching circuit selectively conducts a current path from a (2i-1)th boosting circuit to a first clock terminal or to a ground terminal according to a control signal of the control circuit. A (2i)th switching circuit selectively conducts a current path from a (2i)th boosting circuit to a second clock terminal or to the ground terminal according to the control signal of the control circuit.