Power converter with surge suppression

A power converter with surge suppression, including:

• a high-side switch, wherein a first end of the high-side switch is connected to an input voltage source to receive an input voltage from the input voltage source;
• a low-side switch, wherein a first end of the low-side switch is connected to a second end of the high-side switch, a second end of the low-side switch is grounded, a node between the first end of the low-side switch and the second end of the high-side switch is connected to a first end of an inductor, a second end of the inductor is connected to a first end of one or more output capacitors, a second end of the one or more output capacitors is grounded, and a node between the second end of the inductor and the first end of the one or more output capacitors serves as the output end of the power converter;
• a control circuit, connected to a control end of the high-side switch and a control end of the low-side switch and configured to control operation of the high-side switch and the low-side switch;
• and
• a discharge circuit, configured to receive an output voltage drop signal from an external ramp indication circuit, and in response to the output voltage drop signal indicating that an output voltage of an output voltage signal at the output end of the power converter is dropping, discharging the input voltage source, and in response to the output voltage drop signal indicating that the output voltage stops dropping, stopping the discharging of the input voltage source.