Driver circuit

Details Driver circuit Driver circuit

2008-12-08

2010-12-28

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S108000, C327S387000, C327S388000

Reexamination Certificate

active

07859315

ABSTRACT:
A driver circuit facilitates reducing noises and losses and improving the driving performances thereof without connecting a series circuit of capacitor and a resistor to the gate of IGBT. The driver circuit includes a slope setting circuit that sets the gate voltage waveform of IGBT; and an operational amplifier that includes a non-inverting input terminal, to which an output voltage V* from slope setting circuit is inputted, and an inverting input terminal, to which a divided voltage Vgsf divided by resistors is inputted; and the operational amplifier outputs an output voltage Vout, proportional to the difference between the output voltage V* and the divided voltage Vgsf, to the gate of IGBT.

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patent: 2004-266368 (2004-09-01), None
patent: 2004-280452 (2004-10-01), None
patent: 2007-166655 (2007-06-01), None

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