CPC H02M 3/157 (2013.01) [H02M 1/0019 (2021.05); H02M 1/0095 (2021.05); H02M 1/082 (2013.01); H02M 3/156 (2013.01); H02M 3/158 (2013.01); H02M 3/1588 (2013.01)] | 20 Claims |
1. A controller for a multi-level converter, comprising:
an error signal generator generating an error signal according to a difference between a feedback voltage proportional to an output voltage of the multi-level converter including a plurality of switches and a reference voltage;
a ramp signal generator generating a ramp signal;
a ramp signal adjuster adjusting a slope of the ramp signal according to a difference between a first voltage proportional to the output voltage and a second voltage proportional to a voltage of a flying capacitor; and
a pulse width modulation (PWM) signal generator generating a PWM signal for controlling a first switch, among the plurality of switches, by comparing a SAW signal generated based on the ramp signal with the error signal.
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