Non-isolated dc/dc converter, power supply, and communication device

A power supply, comprising a non-isolated DC/DC converter, comprising a magnetic material, a switching transistor, and a capacitor, wherein

• the switching transistor and the capacitor form charging and discharging loops of the non-isolated DC/DC converter;
• the magnetic material is located inside a printed circuit board (PCB) of the non-isolated DC/DC converter;
• the magnetic material is located in the charging and discharging loops of the non-isolated DC/DC converter;
• and
• the magnetic material provides a magnetic circuit for the charging and discharging loops of the non-isolated DC/DC converter;
• and further comprising a rectifier circuit, wherein
• a first end of the rectifier circuit is configured to connect to an alternating current power supply;
• the rectifier circuit is configured to convert an alternating current of the alternating current power supply into a direct current;
• a second end of the rectifier circuit is configured to connect to a first end of the non-isolated DC/DC converter;
• a second end of the non-isolated DC/DC converter is configured to supply power to a load;
• and
• the non-isolated DC/DC converter is configured to:
• after converting the direct current, provide an obtained current to the load.

A communication device, comprising a power supply configured to supply power to a load in the communication device, wherein the power supply comprises a non-isolated DC/DC converter, comprising a magnetic material, a switching transistor, and a capacitor, wherein

• the switching transistor and the capacitor form charging and discharging loops of the non-isolated DC/DC converter;
• the magnetic material is located inside a printed circuit board (PCB) of the non-isolated DC/DC converter;
• the magnetic material is located in the charging and discharging loops of the non-isolated DC/DC converter;
• and
• the magnetic material provides a magnetic circuit for the charging and discharging loops of the non-isolated DC/DC converter;
• and further comprising a rectifier circuit, wherein
• a first end of the rectifier circuit is configured to connect to an alternating current power supply;
• the rectifier circuit is configured to convert an alternating current of the alternating current power supply into a direct current;
• a second end of the rectifier circuit is configured to connect to a first end of the non-isolated DC/DC converter;
• a second end of the non-isolated DC/DC converter is configured to supply power to a load;
• and
• the non-isolated DC/DC converter is configured to:
• after converting the direct current, provide an obtained current to the load.