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POWER SUPPLY METHOD FOR AVOIDING AUDIO NOISE AND POWER SUPPLY APPARATUS FOR AVOIDING AUDIO NOISE

机译：避免音频噪声的电源方法和避免音频噪声的电源装置

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摘要

A power supply apparatus (10) includes a voltage input side (102), a power switch circuit (104), a voltage output side (106), a pulse width modulation signal generating circuit (108) and a burst frequency detection circuit (110). According to a pulse width modulation signal (114), the pulse width modulation signal generating circuit (108) controls the power switch circuit (104), so that the power supply apparatus (10) enters a burst mode. The burst frequency detection circuit (110) detects a burst frequency of the power switch circuit (104). The burst frequency detection circuit (110) informs the pulse width modulation signal generating circuit (108) that the burst frequency is in an audio frequency range if the burst frequency is in the audio frequency range. The power supply apparatus (10) leaves from the burst mode to avoid audio noise.

机译：电源设备（ 10 ）包括电压输入侧（ 102 ），电源开关电路（ 104 ），电压输出侧（ 104 ） 106 ），脉宽调制信号生成电路（ 108 ）和猝发频率检测电路（ 110 ）。根据脉冲宽度调制信号（ 114 ），脉冲宽度调制信号生成电路（ 108 ）控制电源开关电路（ 104 ），电源设备（ 10 ）进入突发模式。突发频率检测电路（ 110 ）检测电源开关电路（ 104 ）的突发频率。如果猝发频率检测电路（ 110 ）在脉冲宽度调制信号生成电路（ 108 ）的脉冲频率在音频范围内，则通知脉冲宽度调制信号生成电路（ 108 ）。音频范围。电源设备（ 10 ）退出突发模式以避免音频噪声。 展开▼

著录项

公开/公告号US2016373090A1

专利类型

公开/公告日2016-12-22

原文格式PDF

申请/专利权人 CHICONY POWER TECHNOLOGY CO. LTD.;
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申请/专利号US201514741878

发明设计人 YUNG-HUNG HSIAO;CHENG-CHANG HSIAO;
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申请日2015-06-17

分类号H03K3/013;H02M3/04;

国家 US

入库时间 2022-08-21 13:47:56

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