Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Exponential
Reexamination Certificate
2008-04-01
2008-04-01
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Exponential
C327S362000
Reexamination Certificate
active
07352231
ABSTRACT:
A translinear network (34) has first (Q1, Q2, Q3, Q4) and second (Q4, Q3, Q5, Q6) translinear loops. A Trafton-Hastings clamp circuit (36) is connected to generate a piecewise-polynomial-continuous current IY, the value of which becomes undefined when current IX=0 due to a removable singularity in the transfer equation at this point. A current mirror (38) comprising a plurality of transistors (M1, M2, M3) is coupled to the Trafton-Hastings clamp circuit (36), and operates to add additional currents in transistors Q3and Q5to IX, when the Trafton-Hastings clamp transistor (Q7) conducts, so as to perturb the removable singularity in the transfer equation into the left half-plane.
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Hastings A. “Integrated MOSFET interface for a synchronously-rectified SMPS” Bipolar/BICMOS Circuits and Technology Metting, 1995. Proceedings of the 1995 Minneapolis, MN, USA Oct. 2-3, 1995, New York, NY, USA, IEEE, US, Oct. 2, 1995, pp. 58-61, XP010159317 ISBN: 0-7803-2778-0 p. 60, right-hand column, line 16-p. 61, left-hand column, line 2; figure 5.
Brady III Wade J.
Le Dinh T.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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