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Microprocessor controlled class E driver

  • US 9,780,596 B2
  • Filed: 07/29/2014
  • Issued: 10/03/2017
  • Est. Priority Date: 07/29/2013
  • Status: Active Grant
First Claim
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1. A charger comprising:

  • a charging coil magnetically coupleable with an implantable device to recharge the implantable device;

    a class E driver electrically connected to the charging coil, wherein the class E driver comprises;

    a switching circuit, wherein the switching circuit is switched by application of a first voltage to the switching circuit; and

    a current sensor positioned to sense a current passing through the charging coil; and

    a processor electrically connected to the class E driver to receive data indicative of the current passing through the charging coil and electrically connected to the class E driver to control the switching circuit via the application of the first voltage to the switching circuit, wherein the processor is controllable according to stored instructions to receive data indicative of the current passing through the charging coil and control the switching circuit in response to the received data to adjust a drive frequency of the class E driver based on the zero crossing time.

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