Motorola Corporation

Markus Strecker

Ricardo Erckert

Will Specks

Francoise Vareilhias

The invention regards an electric circuit ( ) comprising a first electronic control circuit ( ) controlling the operation of a first electric load ( ) to operate alternatively in a push mode or in a pull mode. To reduce the costs an electric circuit is proposed wherein said first electronic control circuit ( ) controls the driving of a second electric load ( ) in cooperation with a second electronic control circuit ( ).

Electric driver circuit and method

An electronic system ( ) for use in a car has an electronic control unit ( ) and, in the alternative, either a passive load ( ) or an active logic ( ) attached thereto. The control unit ( ) comprises a push-pull arrangement ( ) which can provide drive signals for the load ( ) as well as for the logic ( ), a multiplexer ( ) to alternatively forward a load drive signal of a bus signal to the arrangement ( ), and a register ( ) to store a mode signal. Further, the control unit ( ) automatically determines whether either the load ( ) or the logic ( ) is attached by analyzing electrical parameters.

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Munich, Germany

Markus Strecker