×

Multi-mode wireless power transmitter

  • US 10,135,305 B2
  • Filed: 05/21/2015
  • Issued: 11/20/2018
  • Est. Priority Date: 06/10/2014
  • Status: Active Grant
First Claim
Patent Images

1. A wireless power transmitter, comprising:

  • an inverter configured to produce at its output a first signal having a first frequency or a second signal having a second frequency;

    a first transmit coil coupled to the output of the inverter and configured to wirelessly transmit power at the first frequency;

    a second transmit coil coupled to the output of the inverter and configured to wirelessly transmit power at the second frequency; and

    at least one matching network coupled to the first transmit coil, the second transmit coil, and the output of the inverter, the at least one matching network being configured to provide power to the first transmit coil in response to the first signal and inhibit providing power to the second transmit coil in response to the first signal; and

    a controller configured to detect a type of wireless power receiver in a vicinity of the wireless power transmitter and control the inverter to produce the first signal of the first frequency or the second signal of the second frequency based on the type of wireless power receiver detected,wherein an inductance of the first transmit coil is larger than an inductance of the second transmit coil.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×