Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Current driver
Reexamination Certificate
2006-10-03
2006-10-03
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Current driver
C327S333000
Reexamination Certificate
active
07116136
ABSTRACT:
A control terminal driver IC for a switching circuit having series connected high and low side output transistors, an associated split power supply and a floating input, the gate drive IC, an exemplary, but non-limiting, example of which is a Class D audio amplifier. The IC includes an input circuit, a voltage to current converter connected to the input circuit, a level shifter formed in a mid well of the IC, which is operative to transfer the input signal to the low side without the need for a power supply input to the mid well, a current to voltage converter on the low side coupled to the level shifter; and an output circuit which is operative to generate control terminal drive signals for the high and low side transistors.
REFERENCES:
patent: 5552731 (1996-09-01), Diazzi et al.
patent: 6232833 (2001-05-01), Pullen
patent: 6603291 (2003-08-01), Wheeler et al.
patent: 2002/0105311 (2002-08-01), Rutter et al.
Cheng Xiao-chang
Honda Jun
International Rectifier Corporation
Le Dinh T.
Ostrolenk Faber Gerb & Soffen, LLP
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