发明名称 |
CURRENT MODE PWM BOOST CIRCUIT AND FEEDBACK SIGNAL SENSING METHOD THEREOF |
摘要 |
A feedback signal sensing method includes the steps of: providing a pulse width modulation (PWM) signal having a period; charging a capacitor by a current source during a pulse duration of the period, so as to form an equivalent slope compensation ramp signal; conducting an inductor current flowing from a boost inductor to flow through an equivalent resistor during the pulse duration of the period, so as to form an equivalent inductor current signal; and using a coupling characteristic of the capacitor together with the equivalent slope compensation ramp signal and the equivalent inductor current signal to form a feedback signal.
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申请公布号 |
US2008074089(A1) |
申请公布日期 |
2008.03.27 |
申请号 |
US20070670038 |
申请日期 |
2007.02.01 |
申请人 |
ADVANCED ANALOG TECHNOLOGY, INC. |
发明人 |
YU CHIEN PENG;WANG YI CHENG;YAN YE HSUAN |
分类号 |
G05F1/00 |
主分类号 |
G05F1/00 |
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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