| 发明名称 |
APPARATUS AND METHOD FOR ASYMMETRIC CHARGE PUMP FOR AUDIO AMPLIFIER |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To operate an audio amplifier which operates by using positive and negative two power sources by using a single supply power source from the outside. <P>SOLUTION: Regarding the audio amplifier which operates at a positive power supply voltage VDD and a negative power supply voltage VSS from the supplied VDD, the VSS with a magnitude smaller than that of the VDD and a negative value is generated via an inverted DC-DC converter and supplied to the audio amplifier wherein a charge pump configuration is preferable for the inverted DC-DC converter. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
| 申请公布号 |
JP2008289175(A) |
申请公布日期 |
2008.11.27 |
| 申请号 |
JP20080158504 |
申请日期 |
2008.05.21 |
| 申请人 |
NATL SEMICONDUCTOR CORP <NS> |
发明人 |
CHEN HUAI JIN;CHEN MARCELLUS;BHATT ANSUYA P;SINGH RAMINDER JIT |
| 分类号 |
H03F3/181 |
主分类号 |
H03F3/181 |
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