Multi-phase power supply for stepdown system
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United States of America
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Mar 31, 2020
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N/A
app pub date -
Jan 21, 2019
filing date -
Jan 21, 2019
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Abstract
A multi-phase power supply for stepdown system includes a plurality of first stage voltage converters, a plurality of second stage voltage converters and a controller. The first stage voltage converters are under open-loop control, and the second stage voltage converters are under close-loop voltage regulation control. The first stage voltage converters convert an input voltage to generate a midway voltage. The second stage voltage converters convert the midway voltage to generate an output voltage. The controller receives the output current of each phase of the first stage voltage converters and the second stage voltage converters, the input voltage, the midway voltage of each phase and the output voltage. The controller adjusts a number of enabled phases and balances the output current according to the output currents, and outputs stable power according to the input voltage, the midway voltage and the output voltage.
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