Digital interface for driving at least a couple of power...

Details Digital interface for driving at least a couple of power... Digital interface for driving at least a couple of power...

2006-04-25

2006-04-25

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

C363S056040, C318S484000

Reexamination Certificate

active

07034479

ABSTRACT:
A digital interface for driving at least one complementary pair of first and second power elements connected in an inverter configuration between first and second voltage references is provided. The digital interface includes a first input terminal for receiving a PWM input signal, a first counter stage connected to the first input terminal, and a second counter stage connected to an output of the first counter stage. A toggle stage is connected to the first input terminal and to an output of the second counter stage. A first output terminal is connected to an output of the toggle stage, and is to be connected to a control terminal of the first power element. A second output terminal is connected to the output of the first counter stage for receiving a delayed PWM output signal therefrom, and is to be connected to a control terminal of the second power element. The toggle stage generates a second PWM output signal for the first output terminal. The second PWM output signal is kept at a desired low level in correspondence with switching of the PWM input signal having a lower duration than a predetermined duration.

REFERENCES:
patent: 4504899 (1985-03-01), Jessee
patent: 5122690 (1992-06-01), Bianchi
patent: 5349311 (1994-09-01), Mentzer
patent: 5920210 (1999-07-01), Kaplinsky
patent: 6400197 (2002-06-01), Lai et al.
patent: 6741670 (2004-05-01), Tester
patent: 6809547 (2004-10-01), Ingino et al.
patent: 6847237 (2005-01-01), Kernhof et al.

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