Invention Grant
- Patent Title: Charge pump, switch driver device, lighting device, and vehicle
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Application No.: US15745272Application Date: 2016-06-15
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Publication No.: US10560017B2Publication Date: 2020-02-11
- Inventor: Yasunori Muramatsu , Tetsuo Tateishi
- Applicant: Rohm Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2015-142723 20150717
- International Application: PCT/JP2016/067785 WO 20160615
- International Announcement: WO2017/013970 WO 20170126
- Main IPC: G05F1/10
- IPC: G05F1/10 ; G05F3/02 ; H02M3/07 ; F21S41/12 ; F21Y115/10 ; H02M1/00

Abstract:
Provided is a charge pump including a flying capacitor, an output capacitor, a switch group arranged to switch connection states of the capacitors so as to generate an output voltage from an input voltage, and a feedback control unit arranged to adjust an interterminal voltage of the flying capacitor to a predetermined target value when charging the same. On the basis of a first node voltage applied to a first terminal of the flying capacitor, the feedback control unit adjusts a second node voltage at a second terminal of the flying capacitor. The feedback control unit includes a voltage detection unit arranged to detect the interterminal voltage of the flying capacitor, and a voltage adjustment unit arranged to adjust the second node voltage according to a result of detection by the voltage detection unit.
Public/Granted literature
- US20180234011A1 CHARGE PUMP, SWITCH DRIVER DEVICE, LIGHTING DEVICE, AND VEHICLE Public/Granted day:2018-08-16
Information query
IPC分类: