Controller and control method for converter including multiple pfc circuits

A converter control method comprising:

• calculating, by a first core, pulse width modulation (PWM) control values for first switches included in a first power factor correction (PFC) circuit;
• calculating, by a second core, PWM control values for second switches included in a second PFC circuit;
• storing, by the first core, the PWM control values for the first switches in one of a plurality of first data variables selected according to a sequence number;
• storing, by the second core, the PWM control values for the second switches in one of a plurality of second data variables selected according to a sequence number;
• and
• configuring, by the first core, registers for PWM signal output to the first switches based on a value of the selected first data variable and registers for PWM signal output to the second switches based on the value of the selected second data variable.