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1. 发明授权

US08106639B1 Feed forward control of switching regulator 有权
标题翻译：开关调节器的前馈控制
公开(公告)号：US08106639B1
公开(公告)日：2012-01-31
申请号：US12136010
申请日：2008-06-09
申请人： Shu-Ing Ju , Jayendar Rajagopalan , Rajarshi Paul , Jeffry Mark Huard
发明人： Shu-Ing Ju , Jayendar Rajagopalan , Rajarshi Paul , Jeffry Mark Huard
IPC分类号： G05F1/40
CPC分类号： H02M3/1582 , H02M2001/0022
摘要： The invention relates to a switching regulator with an error amplifier circuit and a feed-forward circuit. The error amplifier circuit provides an error signal by amplifying the difference between a feedback signal and a reference signal. The feed-forward circuit level-shifts the output of the error amplifier based on the feed-forward input signal and a scaling factor. The resulting adjusted error signal includes both feed-back and feed-forward signal components. A PWM comparator is employed to compare the adjusted error signal to a ramp signal. Switched-mode regulation is performed based on the PWM comparator output. In addition, buck-boost mode transition smoothing circuitry may also be employed to smooth the buck-mode/boost-mode transition in a buck-boost switching regulator.
摘要翻译：本发明涉及具有误差放大器电路和前馈电路的开关调节器。误差放大器电路通过放大反馈信号和参考信号之间的差异来提供误差信号。前馈电路基于前馈输入信号和缩放因子对误差放大器的输出进行电平移位。所得到的调整误差信号包括反馈和前馈信号分量。采用PWM比较器将调整后的误差信号与斜坡信号进行比较。基于PWM比较器输出执行开关调节。此外，还可以采用降压 - 升压模式转换平滑电路来平滑降压 - 升压开关调节器中的降压模式/升压模式转换。

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