Current limit control in hot swap controllers

A method for controlling an electronic switch between a power supply and a load, the method comprising:

• measuring a current to the load;
• generating a current limit signal representing a current limit;
• automatically adjusting the current limit signal in response to a change in at least one of an input voltage and an output voltage;
• and
• controlling operation of the electronic switch using the current limit signal.

A circuit for controlling an electronic switch between a power supply and a load, the circuit comprising:

• a first node configured to be in communication with the electronic switch;
• a sensing circuit configured to be connected to an input voltage and to measure a current to the load;
• a control circuit configured to be in communication with the sensing circuit and the electronic switch, the control circuit configured to use a current limit signal to control operation of the electronic switch;
• and
• a current limit circuit configured to be in communication with the control circuit, the current limit circuit configured to generate the current limit signal representing a current limit and automatically adjust the current limit signal in response to a change in at least one of the input voltage and an output voltage.