EXTERNAL LOAD INTERFACE CIRCUIT, ELECTRONIC CONTROL DEVICE, AND METHOD FOR SWITCHING DRIVING VOLTAGE IN EXTERNAL LOAD INTERFACE CIRCUIT

摘要

PROBLEM TO BE SOLVED: To cope with a plurality of kinds of external loads arranged outside an ECU without increasing the footprint of an ASIC and a production cost, in relation to an external load interface for supplying a driving voltage for driving an external load such as a Hall effect element sensor or the like according to a control command to be input from a microcomputer within a mobile object, an electronic control device, and a method for switching driving voltages in the external load interface.;SOLUTION: The external load interface circuit is constituted so that a plurality of driving voltages are switched according to the kinds of the external loads SE1-SE3; and a reference voltage to be generated inside the external load interface circuit and an arbitrary external voltage to be applied to an external terminal are switched so as to output respective driving voltages.;COPYRIGHT: (C)2008,JPO&INPIT