Invention Grant
- Patent Title: Switch-mode power supply having reduced audible noise
- Patent Title (中): 开关模式电源具有降低的可闻噪音
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Application No.: US13855482Application Date: 2013-04-02
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Publication No.: US08970198B2Publication Date: 2015-03-03
- Inventor: Laszlo Huber , Milan Jovanovic , Chien-Chung Chang
- Applicant: Delta Electronics, Inc.
- Applicant Address: TW Taipei
- Assignee: Delta Electronics Inc.
- Current Assignee: Delta Electronics Inc.
- Current Assignee Address: TW Taipei
- Agency: Vector IP Law Group
- Agent Robert S. Babayi
- Main IPC: G05F1/00
- IPC: G05F1/00 ; H02M3/158 ; H02M3/156
Abstract:
A power supply having an input and an output, includes a power converter coupled between the input and output of the power supply including at least one switch that is controlled by comparing a sensed voltage, the sensed voltage corresponding to a current flowing through the switch, to a reference voltage. A controller, in response to a change detected in a switching frequency of the switch, reduces audible noise generated by the power supply by at least one of: adjusting the reference voltage; adjusting the current sense voltage; or adjusting a resistance used to generate the sensed voltage.
Public/Granted literature
- US20130293206A1 SWITCH-MODE POWER SUPPLY HAVING REDUCED AUDIBLE NOISE Public/Granted day:2013-11-07
Information query
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