Power regulation method, apparatus, and device for near field communication

A power regulation method, comprising:

• generating, by an NFC power converter, a high-frequency alternating-current output;
• generating, by an NFC coil, an NFC high-frequency magnetic field, and transmitting an NFC power or an NFC signal;
• transmitting, by an NFC circuit, the high-frequency alternating-current output;
• generating, by a controller, different power control signals based on different operating modes of an NFC apparatus;
• and
• regulating, by a power regulator, based on the different power control signals, at least one of a magnitude or a phase of a power output to the NFC circuit.

A terminal device, comprising:

• a display panel and a housing, and
• a middle frame disposed between the display panel and the housing, wherein a near field communication NFC apparatus is disposed on a side of the middle frame facing the housing, wherein the near field communication NFC apparatus, comprising:
• an NFC power converter configured to connect to a direct-current power supply and generate a high-frequency alternating-current output;
• an NFC coil configured to generate an NFC high-frequency magnetic field and transmit an NFC power or an NFC signal;
• an NFC circuit connected to the NFC power converter and the NFC coil, configured to transmit the high-frequency alternating-current output;
• a controller configured to generate different power control signals based on different operating modes of the NFC apparatus;
• and
• a power regulator having a first end and a second end, the first end configured to connect to the direct-current power supply and the second end configured to connect to the NFC circuit, the power regulator configured to regulate, based on the different power control signals, at least one of a magnitude or a phase of a power output to the NFC circuit.