Invention Grant
- Patent Title: Power converters with switched capacitor buck/boost
- Patent Title (中): 电源转换器带开关电容降压/升压
-
Application No.: US12317223Application Date: 2008-12-19
-
Publication No.: US07795761B2Publication Date: 2010-09-14
- Inventor: Steven Huynh , Matthew A. Grant , Lin Chen
- Applicant: Steven Huynh , Matthew A. Grant , Lin Chen
- Applicant Address: VG
- Assignee: Active-Semi, Inc.
- Current Assignee: Active-Semi, Inc.
- Current Assignee Address: VG
- Agency: Imperium Patent Works
- Agent T. Lester Wallace; Joseph S. Spano
- Main IPC: H01H9/54
- IPC: H01H9/54

Abstract:
A power converter having a switched capacitor buck/boost operation has first and second switches coupled to a first switching node, third and fourth switches coupled to a second switching node, a capacitor coupled between the first and second switching nodes, and an inductor coupled to the first switching node. A switch controller controls the switches to operate in voltage step-down mode and voltage step-up mode depending on a difference between converter output voltage VOUT and converter input voltage VIN. In a buck-optimized topology operating in a step-down mode, an output current flowing through the first switching node flows through only one switch at a given time. In a boost-optimized topology operating in a step-up mode, an output current flowing through the first switching node flows through only one switch at a given time. As a result, a more compact and efficient power converter may be realized at lower cost.
Public/Granted literature
- US20100156368A1 Power converters with switched capacitor buck/boost Public/Granted day:2010-06-24
Information query