发明名称 |
Variable frequency class-D amplifier, control method thereof, and ramp generator therefor |
摘要 |
A class-D amplifier includes a ramp generator to provide a ramp signal having a frequency varying with an audio input signal, and a modulator to convert the audio input signal to a pulse width modulation signal according to the ramp signal for a driver to drive a load device. The varying frequency of the ramp signal will cause the frequency of the pulse width modulation signal unfixed and consequently improves EMI issue. |
申请公布号 |
US8115542(B2) |
申请公布日期 |
2012.02.14 |
申请号 |
US20100857855 |
申请日期 |
2010.08.17 |
申请人 |
HUANG PEI-CHENG;GUO JWIN-YEN;SUN SHAO-MING;RICHTEK TECHNOLOGY CORP. |
发明人 |
HUANG PEI-CHENG;GUO JWIN-YEN;SUN SHAO-MING |
分类号 |
H03F3/38 |
主分类号 |
H03F3/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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