Invention Application
- Patent Title: DC-DC CONVERTER WITH REDUCED ELECTROMAGNETIC INTERFERENCE
- Patent Title (中): 具有降低电磁干扰的DC-DC转换器
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Application No.: PCT/US2004007307Application Date: 2004-03-11
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Publication No.: WO2004084392A3Publication Date: 2004-12-09
- Inventor: DENING DAVID
- Applicant: RF MICRO DEVICES INC
- Assignee: RF MICRO DEVICES INC
- Current Assignee: RF MICRO DEVICES INC
- Priority: US38984903 2003-03-17
- Main IPC: H02M3/156
- IPC: H02M3/156 ; H03K7/08 ; H03K7/10 ; H04B15/02 ; H04B15/04
Abstract:
A DC-DC converter includes a variable frequency oscillator (36), a control system and a power train. The DC-DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its frequency as a function of a pseudo random number generator (60), thereby reducing electromagnetic interference caused by ripple in the output of the DC-DC converter.
Information query
IPC分类:
