Sharing of external components for the control of the switching

Details Sharing of external components for the control of the switching Sharing of external components for the control of the switching

1998-07-13

1999-12-14

Riley, Shawn

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363147, H02M 700

Patent

active

060026014

ABSTRACT:
In multi-phase driving systems of electric motors in a switching mode employing distinct integrated half-bridge output stages, the use of multiple external components for each integrated half-bridge stage to implement functions of adjustment of the switching dead-time and of disabling/enabling of the half-bridge stage can be avoided and an improved matching obtained by using single external components connected in common to the dedicated pins of all the distinct integrated half-bridge output stages. This is achieved by duplicating the disabling comparator, respectively for the power transistor of the pull-up branch and for the power transistor of the pull-down branch in each integrated half-bridge stage.

REFERENCES:
patent: 4670833 (1987-06-01), Sachs
patent: 5043859 (1991-08-01), Koman et al.
patent: 5170337 (1992-12-01), Borowiec et al.
"Commande d'un moteur pas a pas par circuit integre", Electronique Applications, No. 44, Oct. 1985, pp. 29-35.

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