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DIGITAL CONTROLLERS AND DIGITAL CONTROL METHODS OF MULTI-PHASE SWITCHING CONVERTERS
DIGITAL CONTROLLERS AND DIGITAL CONTROL METHODS OF MULTI-PHASE SWITCHING CONVERTERS
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机译:多相开关变换器的数字控制器和数字控制方法
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摘要
A method for controlling a multi-phase switching converter with a plurality of switching circuits, including: sensing the output current of the switching circuit and generating a current sensing signal; generating a digital phase current signal based on the current sensing signal; subtracting the digital phase current signal from a current reference signal and generating a current error signal; proportionally integrating the current error signal and generating a first bias signal; conducting a sigma-delta modulation of the first bias signal and generating a second bias signal, wherein the first bias signal is a P-bit digital signal, the second bias signal is a Q-bit digital signal, and P is larger than Q; and adjusting a control signal controlling the switching circuit based on the second bias signal.
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