RAMP COMPENSATION CONTROL CIRCUIT AND RAMP COMPENSATION CONTROL METHOD

摘要

The present application relates to the technical field of DC/DC circuit control, and provides a ramp compensation control circuit and a ramp compensation control method. The control circuit comprises: a sampling circuit used for acquiring electricity information in a DC/DC circuit, and a control circuit connected to the sampling circuit, wherein the control circuit comprises: a loop compensation circuit connected to the sampling circuit and used for generating a loop output signal according to the electricity information, and a ramp modulation circuit connected to the loop compensation circuit and used for receiving the loop output signal and adjusting a current comparison threshold to achieve ramp compensation control. According to the present application, the technical problems in the existing ramp compensation control method that the ramp compensation amount is excessive and the duty ratio is limited are solved, thereby improving the load capacity and transient response rate of a switching-mode power supply.