{
  "$type": "site.standard.document",
  "description": "A wireless power transmitter circuit includes: an inverter circuit including plural switches coupled to a resonant transmitter circuit; and a transmitter controller circuit for generating a PWM control signal, to control the plural switches, thus generating a wireless transmission power via the…",
  "path": "/patents/1372621",
  "publishedAt": "2025-01-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/60",
    "Richtek Technology Corporation"
  ],
  "textContent": "A wireless power transmitter circuit includes: an inverter circuit including plural switches coupled to a resonant transmitter circuit; and a transmitter controller circuit for generating a PWM control signal, to control the plural switches, thus generating a wireless transmission power via the resonant transmitter circuit in a power supply procedure, so that a wireless power supply is accordingly provided to a wireless power receiver circuit. In a groping procedure, transmitter controller circuit controls the plural switches to generate a wireless test power via the resonant transmitter circuit based on an operation frequency. The groping procedure includes: measuring a peak of a transmission signal corresponding to the wireless test power; determining, according to the peak of the transmission signal, whether a foreign object exists and/or whether the wireless power receiver circuit is present. When it is determined that the wireless power receiver circuit is present, the power supply procedure is performed.",
  "title": "WIRELESS POWER TRANSMITTER CIRCUIT AND METHOD CAPABLE OF DETECTING WIRELESS POWER RECEIVER AND FOREIGN OBJECT"
}