Patent ID: 11929666
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A gate drive circuit comprising:
a pulse transformer;
a first drive circuit connected to a first end of a primary winding of the pulse transformer;
a second drive circuit connected to a second end of the primary winding of the pulse transformer;
a voltage clamper to clamp a voltage of a semiconductor element at a specified voltage when a voltage output from a secondary winding of the pulse transformer is negative;
a current detection circuit to detect current flowing through the semiconductor element and output a detection signal indicating a magnitude of the current;
a control circuit to control the first drive circuit and the second drive circuit based on the detection signal; and
a current limiting circuit to impose a limit on current flowing through the primary winding of the pulse transformer based on the detection signal.