Patent ID: 9000830
Filing Date: 2015-04-07
Classification: H02M,H03K

Abstract:
1. A method for protecting transistors arranged in at least one path, the method comprising steps of: providing at least two transistors connected in series and arranged in the at least one path, applying an input voltage to the at least two transistors, alternately switching the at least two transistors between a conductive state and a blocking state in order to generate an output voltage at a center of the at least one path, for protection against a simultaneous conductive state of the at least two transistors, checking a blocking state of at least one second transistor of the at least two transistors and thereafter switching at least one first transistor of the at least two transistors into a conductive state, and releasing the switching by way of a signal generated during the check, said signal comprising a first state and a second state, checking a status of at least one flyback diode of said at least two transistors before another of said at least two transistors is switched into a conductive state; defining a potential at a center of a path via a voltage divider having at least two resistors coupled in parallel with at least one transistor; and comparing said defined potential with a reference voltage to determine a change in potential to determine whether to initiate switching of at least one transistor wherein the switching is released in the first state and the first state comprises a release state, and wherein the switching is carried out by a control when the generated signal has the release state at a defined switching time.