Power module, router, switch, and electronic device

An electronic device, comprising:

• an input power supply;
• and
• a power module, wherein the input power supply is configured to supply power to the power module, the power module comprises a control circuit and a voltage conversion circuit configured to supply power to a load, wherein the control circuit is configured to control the voltage conversion circuit, and the control circuit comprises:
• a sampling and amplification circuit configured to sample a first current output by the voltage conversion circuit, amplify the first current based on a preset coefficient, and output a second current,
• a comparison circuit configured to compare the second current with a first overcurrent threshold, and output a first comparison signal when the second current is greater than or equal to the first overcurrent threshold, and
• a processing circuit configured to deactivate a pulse signal to the voltage conversion circuit when receiving the first comparison signal, to protect the voltage conversion circuit from overcurrent.

A router, comprising:

• one or more chips;
• and
• a power module connected to supply power to the one or more chips, wherein the power module comprises:
• a control circuit and a voltage conversion circuit configured to supply power to a load, wherein the control circuit is configured to control the voltage conversion circuit, and the control circuit comprises:
• a sampling and amplification circuit configured to sample a first current output by the voltage conversion circuit, amplify the first current based on a preset coefficient, and output a second current;
• a comparison circuit is configured to compare the second current with a first overcurrent threshold, and output a first comparison signal when the second current is greater than or equal to the first overcurrent threshold;
• and
• a processing circuit is configured to deactivate a pulse signal to the voltage conversion circuit when receiving the first comparison signal, to protect the voltage conversion circuit from overcurrent.