Title:
LARGE POWER FET DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JPS60128865
Kind Code:
A
Abstract:
PURPOSE:To accelerate the switching speed of a large power FET by driving the FET by an impedance converter of a low output impedance. CONSTITUTION:FETs 5a-5d are driven by a low impedance by inserting impedance converters 16a-16d between the secondary windings of insulated transformers 8a, 8b and the gates of the FETs 5a-5d. Since the impedance of a drive source is sufficiently small even if relatively large input capacity is presented at the FETs 5a-5d, the charging and discharging time constants for the input capacity can be reduced. As a result, the time for turning the FETs 5a, 5b, 5c, 5d ON and OFF, i.e., the time for turning ON and OFF can be shortened.
Inventors:
UEDA MOTOO
TSUBOSHITA HIROFUMI
TSUBOSHITA HIROFUMI
Application Number:
JP1885184A
Publication Date:
July 09, 1985
Filing Date:
February 02, 1984
Export Citation:
Assignee:
TAKEDA RIKEN IND CO LTD
International Classes:
H03K17/687; H02M3/335; (IPC1-7): H03K17/693
Domestic Patent References:
| JPS5846724A | 1983-03-18 |
Attorney, Agent or Firm:
Kusano Takashi