Compensation slope adjustment in voltage converter

A system comprising:

• a power stage coupled between a power input and a reference terminal, the power stage having a power stage input and a power stage output;
• an inductor coupled between the power stage output and a power output;
• a current sense circuit coupled to the inductor, the current sense circuit having a current sense output;
• a comparator having a first comparator input, a second comparator input, and a comparator output, the first comparator input coupled to the current sense output, and the comparator output coupled to the power stage input;
• a first ramp generator including a first current source coupled between a voltage terminal and a first ramp output and a capacitor coupled between the first ramp output and a ground terminal, the first current source having a control input;
• a current mirror having a first current terminal and a second current terminal, the first current terminal coupled to the first current source;
• a second ramp generator having a second ramp output and a ramp current input;
• a second current source coupled between the second current terminal and the ramp current input;
• and
• a slope control circuit having a slope control input and a slope control output, the slope control input coupled to the current sense output, and the slope control output coupled to the control input.

A method comprising:

• receiving a first signal representing a current of a power converter;
• receiving a second signal representing a compensation ramp signal provided to the power converter;
• based on the first and second signals, determining a ratio between a slope of the current and a slope of the compensation ramp signal;
• responsive to the ratio being above a threshold, increasing the slope of the compensation ramp signal;
• and
• responsive to the ratio being below the threshold, decreasing the slope of the compensation ramp signal.