Control, reduction and equalization of delays in a driver stage

Details Control, reduction and equalization of delays in a driver stage Control, reduction and equalization of delays in a driver stage

1994-03-31

1996-08-06

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327170, 327306, 327379, 327387, 327374, 326 17, H03K 1704, H03K 17687

Patent

active

055437397

ABSTRACT:
The turn-off delay time of a low-side driver (output power transistor), may be independently reduced and eventually made identical to the turn-on delay time by employing an auxiliary current generator that may be controlled by the same switching signal that controls a current generator employed for discharging the control node of the low-side driver, in order to provide an augmented discharging current during a first phase (only) of a turn-off process. The contribution to the capacitance discharge current provided by said third current generator is automatically interrupted by means responsive to the voltage present on the driving node of the low-side driver, when it approaches saturation.

REFERENCES:
patent: 4504779 (1985-03-01), Haman
patent: 5017816 (1991-05-01), Wilcox
patent: 5204562 (1993-04-01), Pace
patent: 5289051 (1994-02-01), Zitta
Patent Abstracts of Japan, vol. 13, No. 468 (E-834)(3816) Oct. 23, 1989 & JP-A-11 83 214 (Toyota Autom Loom Works Ltd) Jul. 21, 1989 *abstract*.
Patent Abstracts of Japan, vol. 10, No. 356 (E-459)(2412) Nov. 29, 1986 & JP-A-61 154 311 (Toshiba Corp) Jul. 14, 1986 *abstract*
Thomson CSF GMBA, Technische Informationen Nr. 34/77, K. Rischmuller: "Basisansteuerung von Hochvolt-Schalttransistoren", pp. 1-31 *pp. 14-17; Figures 11A, 11B* (no translation).

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