Patent ID: 8891269
Filing Date: 2014-11-18
Classification: H02M

Abstract:
1. A method for balancing current in a transformer, wherein said transformer is driven by a signal having a first duty cycle and a second duty cycle, wherein said current of said first duty cycle is opposite the current of said second duty cycle, said method comprising: sensing the current flow through said transformer during said first duty cycle, wherein said sensing the current during said first duty cycle comprises generating a first voltage that is representative of the magnitude of said current during said first duty cycle and wherein said sensing the current during said second duty cycle comprises generating a second voltage that is representative of the magnitude of said current during said second duty cycle; sensing the current flow through said transformer during said second duty cycle; comparing the magnitude of said current during said first duty cycle to the magnitude of said current during said second duty cycle; adjusting the magnitude of current during said first duty cycle so said magnitude of the current during said first duty cycle is substantially equal to said magnitude of the current during said second duty cycle.