18926698. CONTROLLER FOR A RESONANT CONVERTER (NXP USA, Inc.)
CONTROLLER FOR A RESONANT CONVERTER
Organization Name
Inventor(s)
Hans Halberstadt of Groesbeek NL
MATHEUS JOHANNUS GERARDUS Lammers of Nederweert NL
CONTROLLER FOR A RESONANT CONVERTER
This abstract first appeared for US patent application 18926698 titled 'CONTROLLER FOR A RESONANT CONVERTER
Original Abstract Submitted
A controller for a resonant converter. The controller is configured to: receive a measured current signal that represents current flowing in the resonant tank; receive a measured voltage signal that represents the voltage at a predetermined point in the resonant tank; receive a power setting signal, which defines a requested power level for the load; set a protected power signal based on a time delay between a change in state of one of first and second switches and a subsequent zero-crossing of the measured current signal; set an upper voltage threshold value and a lower threshold value based on the lower of: i) the protected power signal; and ii) the power setting signal; in response to the measured voltage signal exceeding the upper voltage threshold value, open the first switch and close the second switch; and in response to the measured voltage signal dropping below the lower voltage threshold value, open the second switch and close the first switch.