Voltage regulation apparatus and overcurrent protection method

An overcurrent protection method, performed by a voltage regulation apparatus, wherein the method comprises:

• receiving an input voltage by a voltage input terminal in the voltage regulation apparatus;
• generating an output voltage by a voltage output terminal in the voltage regulation apparatus;
• obtaining a current parameter based on a detected load current of at least one transistor, of a power stage circuit in the voltage regulation apparatus, wherein the current parameter indicates a load current of the at least one transistor in the power stage circuit;
• and
• dynamically setting a target over-limit duration threshold based on the current parameter, and outputting a control signal when a first duration is greater than the target over-limit duration threshold, wherein the control signal is used to limit the current parameter, and the first duration is a duration in which the current parameter is greater than or equal to a current limiting threshold.

A system, comprising:

• a system on chip (SOC);
• and
• a voltage regulation apparatus coupled to the SOC, comprising:
• a voltage input terminal configured to receive an input voltage,
• a power stage circuit that includes at least one transistor;
• a voltage output terminal configured to generate an output voltage for the SOC;
• a current detection control circuit is configured to:
• obtain a current parameter of the power stage circuit, wherein the current parameter indicates a load current of the at least one transistor;
• dynamically set a target over-limit duration threshold based on the current parameter;
• and
• output a control signal to limit the load current when a first duration is greater than the target over-limit duration threshold, wherein the first duration is a duration in which the current parameter is greater than or equal to a current limiting threshold.