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2. 发明申请

US20090309561A1 DUAL MODE TRANSIENT RECOVERY CONTROL METHOD OF DC-DC CONVERTERS 有权
标题翻译： DC-DC转换器双模瞬态恢复控制方法
公开(公告)号：US20090309561A1
公开(公告)日：2009-12-17
申请号：US12353335
申请日：2009-01-14
申请人： Yi- Jan Emery Chen , Pang-Jung Liu
发明人： Yi- Jan Emery Chen , Pang-Jung Liu
IPC分类号： G05F1/46
CPC分类号： H02M3/156 , H02M3/1563
摘要： A dual mode transient recovery control method and system is proposed, which is designed for use with a direct-current (DC) power output unit, such as a DC-DC converter, for fast transient recovery of DC output power by switching the DC-DC converter to operate between a hysteretic mode and a PWM (Pulse Width Modulation) mode. The proposed control method and system is characterized by the use of a dual-threshold scheme to compare the output voltage. This feature may discharge the transient output voltage, raised by the over-shoot, to the steady state by switching to the discharging mode, and similarly charge the transient output voltage, dropped by the under-shoot, to the steady state by switching to the charging mode. This mechanism may allow DC-DC converters with higher slew rate to make transient ripples of output voltage to return to steady state more quickly, and additionally allow a better level of noise immunity.
摘要翻译：提出了一种双模式瞬态恢复控制方法和系统，其设计用于直流（DC）功率输出单元，例如DC-DC转换器，用于通过切换DC- DC转换器在迟滞模式和PWM（脉宽调制）模式之间工作。所提出的控制方法和系统的特征在于使用双阈值方案来比较输出电压。该功能可以通过切换到放电模式将由过拍引起的瞬态输出电压放电到稳定状态，并且通过切换到放电模式将类似地将由拍摄下降的瞬态输出电压充电到稳定状态充电模式。这种机制可能允许具有更高转换速率的DC-DC转换器使输出电压的瞬态波纹更快地恢复到稳定状态，并且还允许更好的抗噪声水平。

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