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Switched mode power supply driver integrated with a power transmission antenna

  • US 10,624,161 B2
  • Filed: 09/29/2017
  • Issued: 04/14/2020
  • Est. Priority Date: 04/25/2014
  • Status: Active Grant
First Claim
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1. A driver comprising:

  • a switched mode power supply adapted to be electrically coupled to a load (Rload) and provide power supply to the load (Rload), wherein said switched mode power supply comprises an existing coil, wherein said existing coil is a power inductor of the switched mode power supply which power inductor has an active powering duration and a passive freewheeling duration so as to provide power supply to the load (Rload),the driver circuit further comprises;

    a first power transmission antenna formed as a first coil which is coupled to the existing coil of the switched mode power supply,said first power transmission antenna is adapted for being magnetically coupled to a second power receiving antenna external to said driver and different from the load (Rload), thereby forming a wireless power transmitter, andwherein a jumper is placed in parallel with the first power transmission antenna and used for short circuiting the first power transmission antenna, when a power transmission from said first power transmission antenna is not required.

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