Invention Grant
US07795848B2 Method and circuit for generating output voltages from input voltage
有权
用于从输入电压产生输出电压的方法和电路
- Patent Title: Method and circuit for generating output voltages from input voltage
- Patent Title (中): 用于从输入电压产生输出电压的方法和电路
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Application No.: US11746071Application Date: 2007-05-09
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Publication No.: US07795848B2Publication Date: 2010-09-14
- Inventor: Masami Aiura , Satoshi Takahashi
- Applicant: Masami Aiura , Satoshi Takahashi
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agent Charles Bergere
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H02J1/10 ; H02J3/00 ; H02J3/14 ; H02M1/10
Abstract:
A power supply circuit that accurately generates output voltages with the same regulator includes a regulator for generating a first output voltage from an input voltage. A first switch circuit, connected to the regulator, selectively outputs the first output voltage of the regulator as a second output voltage from the power supply circuit. A pre-charge circuit, connected to the regulator and the first switch circuit, generates the second output voltage from the input voltage before the first output voltage of the regulator is output as the second output voltage while controlling the first switch circuit.
Public/Granted literature
- US20080278124A1 METHOD AND CIRCUIT FOR GENERATING OUTPUT VOLTAGES FROM INPUT VOLTAGE Public/Granted day:2008-11-13
Information query
IPC分类:
