Loop gain compensation of interleaved boost converter using cycle time

An interleaved boost converter, comprising:

• a first converter having a first gate and operating at a first phase to receive an input power and generate a first converted output power;
• a second converter having a second gate and operating at a second phase to receive an input power and generate a second converted output power;
• a phase compensator to receive a cycle signal from at least one of the first converter and the second converter, the cycle signal having a power phase during which power is drawn from a respective converter input, the power phase having a primary stroke during which the first gate is enabled and a secondary stroke during which the first gate is disabled, the phase comparator to compare a duration of the power phase to a cycle duration from the start of the primary stroke to a start of a next primary stroke and to generate a phase compensation in response thereto;
• a phase adjustment module to receive a first phase feedback signal of the first converter and a second phase feedback signal of the second converter, to measure the phase difference, to receive the phase compensation and to generate a phase control output in response to the phase difference and the phase compensation;
• a cycle controller to receive the phase control output and to generate a first drive signal to control switching of the first gate and a second drive signal to control switching of the second gate, wherein times of the first and second drive signals are adjusted using the phase control output.

A method comprising:

• receiving an input power at a first converter and at a second converter;
• generating an output power as an interleaved output of the first converter and the second converter;
• receiving a cycle signal from the first converter, the cycle signal having a power phase during which power is drawn from the input power, the power phase having a primary stroke during which a first gate of the first converter is enabled and a secondary stroke during which the first gate is disabled;
• comparing a duration of the power phase to a cycle duration of the first converter from the start of the primary stroke to a start of a next primary stroke and generating a phase compensation in response thereto;
• receiving a first phase feedback signal of the first converter and a second phase feedback signal of the second converter;
• measuring the phase difference;
• generating a phase control output in response to the phase difference and the phase compensation;
• and
• generating a first drive signal to control switching of the first gate of the first converter;
• generating a second drive signal to control switching of a second gate of the second converter and adjusting a time of the second drive signal using the phase control output.