Load regulation compensation module and switching converter comprising the same

A switching converter, comprising:

• an input port configured to receive an input voltage;
• an output port configured to provide an output voltage;
• an internal reference ground connected to a package ground pin via a resistive component;
• a switch module having a first terminal coupled to the input port, a second terminal coupled to the output port, a third terminal coupled to the internal reference ground, and a fourth terminal configured to receive a control signal, wherein the switch module is configured to switch on and off periodically with a substantially constant on time in response to the control signal to convert the input voltage into the output voltage, and wherein the on and off switching of the switch module generates a switching current flowing through the resistive component, resulting in an average offset voltage between the internal reference ground and the package ground pin;
• a load regulation module configured to receive a feedback signal indicative of the output voltage and a first reference signal indicative of a desired value of the output voltage, and configured to provide a regulation signal indicative of a difference between the feedback signal and the first reference signal, and to compare the regulation signal with a sawtooth signal to generate a comparison signal, wherein the comparison signal is configured to trigger a timer to start timing so as to generate the control signal;
• and
• a load regulation compensation module configured to receive a second reference signal having a bandgap reference voltage with respect to the internal reference ground, to monitor the switching current flowing through the resistive component, and to compensate the second reference signal based on the monitored switching current to generate the first reference signal, so that the average offset voltage is substantially cancelled out from the first reference signal with respect to the package ground pin.